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Braga-Neto JT, Tozetto SO, Oliveira FS, Conceição TA, Santos WPC, Fernandes MS, Baliza MD. Comet assay to evaluate chromosomal changes in chickens (Gallus gallus domesticus) contaminated by lead in a city in Bahia. BRAZ J BIOL 2023; 83:e274806. [PMID: 38126633 DOI: 10.1590/1519-6984.274806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 11/15/2023] [Indexed: 12/23/2023] Open
Abstract
Chicken (Gallus gallus domesticus) is one of the primary sources of animal protein for the Brazilian population. Thus, the safety of this food is highly relevant. This study was based on the evidence of severe contamination of these animals by metals such as lead in Santo Amaro, Bahia. This exploratory study aimed to evaluate associations between lead levels in blood of chicken exposed to a contaminated area with the occurrence of chromosomal alterations, evidencing genotoxic effects. Serum lead analysis was performed by GF-AAS after dilution with a matrix modifier solution (Triton X-100 0.2% v/v and HNO3 0.1% v/v), while chromosomal damage was evaluated using the comet assay. The results showed genotoxic effects (positive comet assay) only for the specimen sample with higher serum lead concentrations (33.9 µg dL-1), suggesting the occurrence of toxic effects at this level of exposure. This work evaluated a relationship between the reduction of serum lead levels in chicken and increased distance from the primary polluting source - a lead processing plant (COBRAC). It also showed that lead is bioavailable in this territory, contaminating chicken and causing genotoxic effects in these animals, further expanding the concern with the local biota and the health of the residents of Santo Amaro.
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Affiliation(s)
- J T Braga-Neto
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - S O Tozetto
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - F S Oliveira
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - T A Conceição
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
| | - W P C Santos
- Instituto Federal de Educação, Ciência e Tecnologia da Bahia - IFBA, Salvador, BA, Brasil
| | - M S Fernandes
- Universidade Federal da Fronteira Sul - UFFS, Campus Passo Fundo, Passo Fundo, RS, Brasil
| | - M D Baliza
- Universidade Federal do Recôncavo da Bahia - UFRB, Centro de Ciências da Saúde, Complexo Multidisciplinar de Estudos e Pesquisa em Saúde, Santo Antônio de Jesus, BA, Brasil
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Miranda Dos Santos CC, Rodrigues Nauar A, Azevedo Ferreira J, da Silva Montes C, Rovasi Adolfo F, Leal G, Moraes Reis G, Lapinsky J, Machado de Carvalho L, Amado LL. Multiple anthropogenic influences in the Pará River (Amazonia, Brazil): A spatial-temporal ecotoxicological monitoring in abiotic and biotic compartments. CHEMOSPHERE 2023; 323:138090. [PMID: 36791820 DOI: 10.1016/j.chemosphere.2023.138090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2022] [Revised: 12/20/2022] [Accepted: 02/05/2023] [Indexed: 06/18/2023]
Abstract
The mineral wealth of the Amazon region is prone to intense exploration with consequent metals mobilization in ecosystems. Besides that, a number of other anthropogenic activities contribute to the imbalance of this important environment. The Pará River is an important water body in the Amazon basin and is under multiple anthropogenic influences, including disorderly urbanization, port activities and processing of minerals such as bauxite and kaolin. In this study, metals concentrations (Al, Cr, Pb, Ba, Ni, and Mn) in water, sediment and organisms (the fish Cheirocerus goeldii and the shrimp Macrobrachium amazonicum) and biochemical biomarkers (total antioxidant capacity, ACAP and lipid peroxidation, LPO) were analyzed along five points in the Para River with different distances to a center of anthropogenic activity, in three seasonal periods (rainy, transition and dry). Metals concentrations were similar among sites in each seasonal period but Aluminium (Al) presented the highest concentrations among all analyzed metals both in sediment and water considering all sampling points and all seasonal periods. In the dissolved fraction, Al had values above those established by the local environmental agency, especially during the rainy season. In the biotic compartment, both fish and shrimps showed higher concentrations of metals (Al and Ba) in the rainy season compared to the other seasons. Shrimp was more responsive to metal accumulation than fish, showing an adaptive response of biomarkers. Fish showed an increase of LPO in gills for individuals from the point of greater anthropogenic interference during the rainy season, but no differences in metal accumulation. We conclude that there is a seasonal pattern of metals concentration in different environmental compartments. Metal concentration in organisms and biomarkers responses, showed the effect of anthropogenic influences, which was not evident in results from chemical analyses alone, due to the intensive hydrodynamics in the region.
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Affiliation(s)
- Carla Carolina Miranda Dos Santos
- Programa de Pós-graduação Em Farmacologia e Bioquímica, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil; Laboratório de Ecotoxicologia and Laboratório de Pesquisa Em Monitoramento Ambiental Marinho, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil
| | - Alana Rodrigues Nauar
- Programa de Pós-graduação Em Oceanografia, Instituto de Geociências, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil; Laboratório de Ecotoxicologia and Laboratório de Pesquisa Em Monitoramento Ambiental Marinho, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil
| | - Johnata Azevedo Ferreira
- Laboratório de Ecotoxicologia and Laboratório de Pesquisa Em Monitoramento Ambiental Marinho, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil
| | - Caroline da Silva Montes
- Facultad de Ingeniería y Tecnología, Universidad San Sebastián, Lientur, 1457, Concepción, Chile
| | - Franciele Rovasi Adolfo
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | - Gabriela Leal
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | - Gabriel Moraes Reis
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | - Jéssica Lapinsky
- Departamento de Química, Universidade Federal de Santa Maria - UFSM, Santa Maria, RS, Brazil
| | | | - Lílian Lund Amado
- Programa de Pós-graduação Em Farmacologia e Bioquímica, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil; Programa de Pós-graduação Em Oceanografia, Instituto de Geociências, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil; Laboratório de Ecotoxicologia and Laboratório de Pesquisa Em Monitoramento Ambiental Marinho, Instituto de Ciências Biológicas, Universidade Federal Do Pará - UFPA, Belém, PA, Brazil.
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Santos ACSS, Souza LA, Araujo TG, de Rezende CE, Hatje V. Fate and Trophic Transfer of Rare Earth Elements in a Tropical Estuarine Food Web. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:2404-2414. [PMID: 36719271 DOI: 10.1021/acs.est.2c07726] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
We sampled abiotic and food web components in an impacted estuarine system to assess the transfer and fate of rare earth elements (REE). REE (based on dry weight) were measured in sediments, suspended particulate matter (SPM), and organisms from different trophic levels. The highest ∑REE concentrations were measured in sediments (180 ± 4.24 mg kg-1) and SPM (163 ± 12.6 mg kg-1). Phytoplankton (45.7 ± 5.31 mg kg-1), periphyton (51.6 ± 1.81 mg kg-1), and zooplankton (68.5 ± 1.27 mg kg-1) are the major sources of exposure and transfer of REE to the food web. REE concentrations were several orders of magnitude lower in bivalves, crustaceans, and fish (6.01 ± 0.11, 1.22 ± 0.18, and 0.059 ± 0.003 mg kg-1, respectively) than in plankton. The ∑REE declined as a function of the trophic position, as determined by functional feeding groups and δ15N, indicating that REE were subject to trophic dilution. Our study suggests that the consumption of seafood is unlikely to be an important source of REE for humans. However, given the numerous sources of dietary introduction of REE, they should be monitored for a possible harmful cumulative effect. This study provides new key information on REE's baseline concentrations and trophic transfers and patterns.
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Affiliation(s)
- Ana C S S Santos
- Centro Interdisciplinar de Energia e Ambiente - CIENAM, Universidade Federal da Bahia, Campus Ondina, Ondina, Salvador, Bahia40170-115, Brazil
| | - Laís A Souza
- Centro Interdisciplinar de Energia e Ambiente - CIENAM, Universidade Federal da Bahia, Campus Ondina, Ondina, Salvador, Bahia40170-115, Brazil
| | - Taiana G Araujo
- Departamento de Ciências Agrárias e Ambientais, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, km 16, Salobrinho, Ilhéus, Bahia45662-900, Brazil
| | - Carlos Eduardo de Rezende
- Laboratório de Ciências Ambientais; Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego 2000 Parque Califórnia, Campos dos Goytacazes, RJ28013-602, Brazil
| | - Vanessa Hatje
- Centro Interdisciplinar de Energia e Ambiente - CIENAM, Universidade Federal da Bahia, Campus Ondina, Ondina, Salvador, Bahia40170-115, Brazil
- Dept de Química Analítica, Inst. de Química. Universidade Federal da Bahia, Ondina, Salvador, Bahia40170-115, Brazil
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Trevizani TH, Domit C, Santos MCDO, Figueira RCL. Bioaccumulation of heavy metals in estuaries in the southwest Atlantic Ocean. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:26703-26717. [PMID: 36370314 DOI: 10.1007/s11356-022-23974-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
The southwestern Atlantic Ocean is home to highly productive regions, composed of a mosaic of both protected and anthropogenically impacted areas, including the estuaries of Paranaguá, Cananéia, and Santos. In this study, concentrations of metals were measured in sediments and in marine organisms, collected from these three Brazilian estuaries. The higher concentrations of metals in the sediments from the Santos estuary are due to having the greatest intensity of anthropogenic activities. There is bioaccumulation of As, Cu, Ni, and Pb in benthic invertebrates, As in fish, and Se and Zn in all studied trophic groups. Comparing the biota among estuaries, levels were highest for Cr, Cu, Pb, Se, and Zn in Paranaguá, As in Cananéia, and Ni in Santos; results justified due to anthropogenic activities, natural sources, and geochemical and hydrodynamics characteristics of each region that affect the bioavailability of metals. The results showed that these regions of the Atlantic present higher levels of metals in the biota than several coastal regions worldwide, and signal that food security may be compromised. Highlighting the need for better impact assessment, monitoring, and managing is deemed necessary as these regions are globally recognized as hotspots of biodiversity and are considered priority areas for conservation.
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Affiliation(s)
| | - Camila Domit
- Laboratório de Ecologia e Conservação - Centro de Estudos Do Mar, Universidade Federal Do Paraná, Pontal Do Paraná, Paraná, Brazil
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da Silva Junior JB, de Carvalho VS, Sousa DS, Dos Santos IF, Brito GB, Queiroz AFS, Ferreira SLC. A risk assessment by metal contamination in a river used for public water supply. MARINE POLLUTION BULLETIN 2022; 179:113730. [PMID: 35537302 DOI: 10.1016/j.marpolbul.2022.113730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/29/2022] [Accepted: 04/30/2022] [Indexed: 06/14/2023]
Abstract
Aquatic ecosystems provide habitats for many organisms. Historically, riverbanks have always been inhabited and exploited for subsistence and navigation. The present study evaluates the contamination and ecological risks caused by potentially toxic elements in surface sediments of the Paraguaçu River, Bahia, Brazil. Seven sediments samples were collected, and eight heavy metals were determined employing inductively coupled plasma spectrometry mass (ICP-MS). The concentrations range as (mg kg-1) found were 6.78-18.68 for lead, 14.21-42.16 for zinc, 27.61-48.63 for nickel, 2.03-6.50 for chromium, 6.06-12.90 for vanadium, 5.99-13.33 for cupper, 1.25-3.19 for cobalt, and 79.52-286.08 for manganese. Nickel showed significant enrichment (EF: 5.75; 7.62, and 14.11), followed by zinc, which showed moderate enrichment (EF: 2.16; 2.19, and 4.52). These enrichment levels are possible of anthropogenic origin. When the pollution index (PI) was evaluated, the elements V, Ni, Zn, Mn, Co, and Cu were strongly polluted (PI ≥3). In general, the pollution index (PI), geoaccumulation index (Igeo), enrichment factor (EF), and potential ecological risk indices (Er and PERI) show that contaminated sediments have adverse effects on aquatic environments, especially for o Mn, Ni, Pb, V, and Zn.
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Affiliation(s)
- Jucelino B da Silva Junior
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-115 Salvador, Bahia, Brazil; Universidade Federal da Bahia, Instituto de Química, Campus Ondina, 40170-270 Salvador, Bahia, Brazil; Universidade Federal da Bahia, Instituto de Geociências, Campus Ondina, 40170-270 Salvador, Bahia, Brazil.
| | - Vanessa S de Carvalho
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-115 Salvador, Bahia, Brazil; Universidade Federal da Bahia, Instituto de Química, Campus Ondina, 40170-270 Salvador, Bahia, Brazil
| | - Daniele S Sousa
- Universidade Federal da Bahia, Instituto de Geociências, Campus Ondina, 40170-270 Salvador, Bahia, Brazil
| | - Ivanice F Dos Santos
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-115 Salvador, Bahia, Brazil; Universidade Federal da Bahia, Instituto de Química, Campus Ondina, 40170-270 Salvador, Bahia, Brazil; Universidade Estadual de Feira de Santana, Departamento de Ciências Exatas, 44036-900 Feira de Santana, Bahia, Brazil
| | - Geysa B Brito
- Universidade Regional do Cariri (URCA), 63105-000 Crato, Ceará, Brazil
| | - Antônio F S Queiroz
- Universidade Federal da Bahia, Instituto de Geociências, Campus Ondina, 40170-270 Salvador, Bahia, Brazil
| | - Sérgio L C Ferreira
- Instituto Nacional de Ciência e Tecnologia, INCT, de Energia e Ambiente, Universidade Federal da Bahia, 40170-115 Salvador, Bahia, Brazil; Universidade Federal da Bahia, Instituto de Química, Campus Ondina, 40170-270 Salvador, Bahia, Brazil.
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de Freitas TOP, Pedreira RMA, Hatje V. Distribution and fractionation of rare earth elements in sediments and mangrove soil profiles across an estuarine gradient. CHEMOSPHERE 2021; 264:128431. [PMID: 33017707 DOI: 10.1016/j.chemosphere.2020.128431] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/04/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
Many hypotheses have been raised about the controls of the distribution and fractionation of the rare earth elements (REE) in coastal ecosystems. Here, REE were measured in estuarine sediments and in six mangrove soil profiles along the estuarine salinity gradient of the Jaguaripe estuary, northeastern Brazil. The aim of this study was to evaluate the fractionation, distribution, remobilization, and possible sources of these elements. The ΣREE and Y in oxic estuarine sediments ranged from 202 to 220 mg kg-1 and from 12 to 15 mg kg-1, respectively. The normalized abundances to the Post Archean Australian Shale (PAAS) showed that light REE (LREE; La, Ce, Pr, and Nd) were consistently enriched over heavy REE (HREE; Er, Tm, Yb, and Lu). Among the REE, only LREE showed significant correlation with Al (r = 0.85) and Fe (r = 0.96) indicating that Al and Fe oxy-hydroxides are the main host phases of the LREE in estuarine sediments. The average ΣREE for mangrove soils throughout the salinity gradient ranged from 161 ± 18 mg kg-1 (lower estuary) to 183 ± 16 mg kg-1 (upper estuary). Al-normalized Mn and Fe concentrations showed small peaks down-core, indicating diagenetic remobilization. Vertical REE profiles have shown that post-deposition processes might contribute to the patterns in the abundances of the ΣREE and their fractionation at the surface and subsurface mangrove soils. Below the top 15 cm, diagenetic alteration after burial is not leading to substantial variation in the LREE/HREE profiles. The coincidence of peaks in individual REE/Al down core along with Fe and Mn peaks reflects the participation of the REE in early diagenesis. The REE abundances observed here corroborate to the characterization of the Jaguaripe estuary as a pristine system and can be used as a background for the region.
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Affiliation(s)
- Tácila O P de Freitas
- Inst. de Química & Centro Interdisciplinar de Energia e Ambiente, CIENAM, Universidade Federal da Bahia, Ondina, Salvador, Bahia, 40170-115, Brazil
| | - Rodrigo M A Pedreira
- Inst. de Química & Centro Interdisciplinar de Energia e Ambiente, CIENAM, Universidade Federal da Bahia, Ondina, Salvador, Bahia, 40170-115, Brazil
| | - Vanessa Hatje
- Inst. de Química & Centro Interdisciplinar de Energia e Ambiente, CIENAM, Universidade Federal da Bahia, Ondina, Salvador, Bahia, 40170-115, Brazil.
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Meneguelli-Souza AC, Pestana IA, Azevedo LS, de Almeida MG, de Souza CMM. Arsenic in the lower drainage basin of the Paraíba do Sul River (Southeast Brazil): dynamics between the water column and sediment. ENVIRONMENTAL MONITORING AND ASSESSMENT 2021; 193:57. [PMID: 33432428 DOI: 10.1007/s10661-020-08830-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Accepted: 12/27/2020] [Indexed: 06/12/2023]
Abstract
The presence of arsenic (As) in the sediment and the particulate and dissolved fractions of the water column determines its behavior and bioavailability. The main geochemical parameters responsible for As mobility are organic matter and oxide-forming metals such as Fe. The As distribution and its concentration were evaluated in the dissolved fraction, suspended particulate matter (SPM) and sediment of the lower Paraíba do Sul River (PSR), its main tributaries (Muriaé, Pomba, and Dois Rios rivers), and flooded and estuarine areas. As was not detected in the dissolved fraction. The river flow influenced the As concentration in the SPM, which was higher in the dry season than in the rainy season (2.6 ± 0.69 and 1.98 ± 0.29 mg kg-1, respectively). The Fe oxyhydroxides, organic carbon, and surface area measured in the sediment were positively related with As concentration (R2 = 0.11, 0.34, and 0.30; p < 0.05). The highest As concentrations in the sediment occurred in the secondary estuary and flooded areas (5.16 ± 4.78 and 1.23 ± 0.44 mg kg-1, respectively), in which finer granulometric fractions (silt and clay) predominated (64% and 71%, respectively), in addition to greater surface area. The measurement of stable carbon and nitrogen isotopes (δ13C and δ15N) and atomic ratio (C:N)a indicated the existence of a combination of autochthonous and allochthonous sources of organic matter composing the SPM. In general, the As concentrations in the sediment and SPM were low, with values below that permitted by Brazilian regulations (5.9 mg kg-1), which suggests that the As sources in the lower basin of the PSR are diffuse and natural.
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Affiliation(s)
- Annaliza Carvalho Meneguelli-Souza
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, CEP: 28013-602, Brazil.
| | - Inácio Abreu Pestana
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, CEP: 28013-602, Brazil
| | - Lucas Silva Azevedo
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, CEP: 28013-602, Brazil
| | - Marcelo Gomes de Almeida
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, CEP: 28013-602, Brazil
| | - Cristina Maria Magalhães de Souza
- Programa de Pós-Graduação em Ecologia e Recursos Naturais, Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia, Universidade Estadual do Norte Fluminense Darcy Ribeiro, Av. Alberto Lamego, 2000, Parque Califórnia, Campos dos Goytacazes, Rio de Janeiro, CEP: 28013-602, Brazil
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Abdullah MIC, Sah ASRM, Haris H. Geoaccumulation Index and Enrichment Factor of Arsenic in Surface Sediment of Bukit Merah Reservoir, Malaysia. Trop Life Sci Res 2020; 31:109-125. [PMID: 33214859 PMCID: PMC7652249 DOI: 10.21315/tlsr2020.31.3.8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
An investigation study was conducted in Bukit Merah Reservoir (BMR) for the assessment of arsenic concentration in the surface sediment in 23 sampling stations. The sediment samples were digested and analysed for arsenic using Inductively Coupled Plasma-Optical Emission Spectrometry (ICP-OES). Sediment parameters such as pH (4.42 ± 0.71), redox potential (121.77 ± 42.45 mV), conductivity (205.7 ± 64.07 μS cm−1) and organic matter (25.35 ± 9.34%) were also examined. The main objectives of this study are to determine the arsenic distribution and concentration and at the same time to assess the enrichment of arsenic using the geoaccumulation index (Igeo) and enrichment factor (EF). This study shows the total arsenic concentration in the surface sediment of BMR is 4.302 ± 2.43 mg kg−1 and found to be below the threshold value of Canadian Interim Sediment Quality Guidelines (ISQG). High arsenic concentration is recorded near the southern part of the lake where anthropogenic activities are prevalent. Based on Igeo, 13% of sampling stations are categorised as moderately polluted, 52.2% as unpolluted to moderately polluted and the rest is categorised as unpolluted. EF shows 78.3% stations are classified as extremely high enrichment and the rest as very high enrichment. This finding provides important information on the status of arsenic contamination in BMR and creating awareness concerning the conservation and management of the reservoir in the future.
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Affiliation(s)
| | | | - Hazzeman Haris
- School of Biological Sciences, Universiti Sains Malaysia, 11800 USM Pulau Pinang, Malaysia
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Reis A, Barros F. Tropical saltmarshes are important to juvenile fiddler crabs but not as refuges from large predators or high temperatures. MARINE ENVIRONMENTAL RESEARCH 2020; 161:105133. [PMID: 32911252 DOI: 10.1016/j.marenvres.2020.105133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Revised: 07/27/2020] [Accepted: 08/26/2020] [Indexed: 06/11/2023]
Abstract
Tropical saltmarshes' role as a refuge for macrofauna is poorly known. We tested the hypotheses that: i) there is an increase in abundance of early life-stages of fiddler crabs associated with an increase in vegetation density (thermal and/or predation refuge) and ii) predation are lower within saltmarsh vegetation. The abundance of early life-stages increased with both vegetation density and temperature. Megalopa and juveniles might be adapted or benefit from high temperatures found on tropical saltmarshes and thus do not need protection from it. Predation was higher in saltmarshes than in nearby non-vegetated areas, thus tropical saltmarshes can not be considered a refuge from relatively large predators for juveniles of fiddler crabs. Although not offering refuge against temperature and predation, tropical saltmarshes are important habitats for the recruitment of early life-stages of fiddler crabs. Future studies should consider the evaluation of tropical saltmarsh hydrodynamics in the settlement and permanence of juveniles.
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Affiliation(s)
- Alice Reis
- Laboratório de Ecologia Bentônica, Instituto de Biologia & CIENAM, Universidade Federal da Bahia, Rua Barão de Geremoabo, s/n, Campus de Ondina, Salvador, Bahia, 40170-115, Brazil; Instituto Nacional de Ciência e Tecnologia, Estudos Interdisciplinares e Transdisciplinares em Ecologia e Evolução (INCT IN-TREE), Salvador, Bahia, Brazil.
| | - Francisco Barros
- Instituto Nacional de Ciência e Tecnologia, Estudos Interdisciplinares e Transdisciplinares em Ecologia e Evolução (INCT IN-TREE), Salvador, Bahia, Brazil
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Teixeira MC, Santos AC, Fernandes CS, Ng JC. Arsenic contamination assessment in Brazil - Past, present and future concerns: A historical and critical review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 730:138217. [PMID: 32422455 DOI: 10.1016/j.scitotenv.2020.138217] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Revised: 03/12/2020] [Accepted: 03/24/2020] [Indexed: 06/11/2023]
Abstract
This paper presents a summary of some relevant documents published during the last decades regarding arsenic contamination in Brazil until December 2018, including scientific papers, reports and regulatory documents. Natural and anthropogenic arsenic sources were covered, excluding those related to agriculture. International "key" documents related to arsenic contamination were used to support the discussion and comparative analysis. This paper aims: (a) to summarize and discuss some available data (including Portuguese written documents) concerning arsenic contamination in Brazil, mainly geographical, geological, geochemical, environmental and health studies; (b) to critically review the published studies comparing their main findings; (c) to describe and compare ancient and recent contamination events; and (d) to highlight key knowledge gaps, and identify promising areas for future researches. The arsenic contamination scenario in Brazil results not only from mining. Natural or anthropogenic emissions caused by great magnitude phenomena as flooding, erosion, landslide and, water scarcity equally impact arsenic mobilization/immobilization equilibria. Our literature review demonstrates that arsenic contamination of soils, sediments and water sources is observed at least at three of the five geographically defined Brazilian regions (Northern, Southern and, Southeastern regions). Arsenic enriched soils, and waters naturally occur all around the country and anthropogenic activities have been the main contributory factor to the environmental contamination since the 18th Century. Geogenic materials (topsoil and mining tailings), and water samples could contain extremely high arsenic concentrations, i.e. 21,000 mg kg-1 or 1,700,000 μg L-1, respectively, have been found mainly at the "Iron Quadrangle". Moreover, if we consider both the Brazilian and international parameters, the health risks associated with the human exposition to arsenic are of significant concern. For those reasons, constant monitoring of As contaminated areas in Brazil is mandatory. Furthermore, it is necessary to learn from the mistakes made in the past in order to prevent or minimize future problems.
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Affiliation(s)
- Mônica Cristina Teixeira
- Pharmacy Department, Pharmacy School, Federal University of Ouro Preto, UFOP, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil.
| | - Alcylane Caldeira Santos
- Environmental Engineering Graduating Program - ProAmb, Federal University of Ouro Preto, UFOP, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil
| | - Carla Silva Fernandes
- Environmental Engineering Graduating Program - ProAmb, Federal University of Ouro Preto, UFOP, Campus Morro do Cruzeiro, Ouro Preto, MG 35400-000, Brazil
| | - Jack Chakmeng Ng
- Queensland Alliance for Environmental Health Sciences (QAEHS), the University of Queensland, 20 Cornwall Street, Woolloongabba, Brisbane, QLD 4102, Australia
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Fang TH, Lien CY. Mini review of trace metal contamination status in East China Sea sediment. MARINE POLLUTION BULLETIN 2020; 152:110874. [PMID: 31957669 DOI: 10.1016/j.marpolbul.2019.110874] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/25/2019] [Accepted: 12/31/2019] [Indexed: 06/10/2023]
Abstract
This study reviewed the published papers and employed the guideline values of USEPA (ERL and ERM) and China (MSQ, Class I, II, III) to assess the contamination status of potential toxic metals in East China Sea sediment (ECS). The percentages of metal concentrations exceeding the ERL value follow the sequences: Ni (96%) > As(71%) > Cr(53%) > Cu (19%) > Zn (2.4%) > Hg (0.5%) > Pb (0.4%) > Cd (0%). The similar ranking is also seen for MSQ class I. All metal concentrations were less than the ERM value, except Ni of which value 10.3% exceeded the ERM value. The potentially ecological risk from these sedimentary metals could be reduced because they were mainly present in the residual fraction, which is not available for marine organisms. It seems that the Ni ERL value is too low (20.8. mg kg-1), close to the value (18.6 mg kg-1) of the upper continental crust, to obey.
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Affiliation(s)
- Tien Hsi Fang
- Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202, Taiwan..
| | - Chia Yu Lien
- Department of Marine Environmental Informatics, National Taiwan Ocean University, Keelung 202, Taiwan
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Egres AG, Hatje V, Gallucci F, Machado ME, Barros F. Effects of an experimental oil spill on the structure and function of benthic assemblages with different history of exposure to oil perturbation. MARINE ENVIRONMENTAL RESEARCH 2019; 152:104822. [PMID: 31668831 DOI: 10.1016/j.marenvres.2019.104822] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/04/2019] [Accepted: 10/12/2019] [Indexed: 06/10/2023]
Abstract
The present study compared the short-term effects of a diesel oil spill on the strucure and function of nematode and macrobenthic assemblages between tidal flats with different history of exposure to oil perturbation. A manipulative field experiment was conducted, where oil exposed treatments were contrasted with controls, during four successive times, two before and two after the oil spills. During the oil spill the death and the presence of diverse debilitated macrofaunal organisms were observed in the oil treatments. However, 24 h later no significant changes were identified, suggesting that the impacted plots were quickly recolonized. Nematode assemblages showed a decrease in overall density and an increase of r-strategist traits such as non-selective deposit feeders and colonizers at perturbed treatments from one of the historically non-perturbed tidal flats. We discuss the mechanisms responsible by distinctive patterns of response observed between the two benthic components.
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Affiliation(s)
- Aline Gonzalez Egres
- Laboratório de Ecologia Bentônica (LEB), Centro Interdisciplinar de Energia e Ambiente (CIEnAm), Instituto de Biologia da Universidade Federal da Bahia, Rua Barão de Jeremoabo, Campus de Ondina, Salvador, 40170-115, Bahia, Brazil.
| | - Vanessa Hatje
- Centro Interdisciplinar de Energia e Ambiente (CIEnAm), Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, Ondina, Salvador, 40170-115, BA, Brazil
| | - Fabiane Gallucci
- Instituto do Mar da Universidade Federal de São Paulo, Rua Carvalho de Mendonça, 144, Santos, São Paulo, 11030-400, Brazil
| | - Maria Elisabete Machado
- Centro Interdisciplinar de Energia e Ambiente (CIEnAm), Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo, s/n, Ondina, Salvador, 40170-115, BA, Brazil
| | - Francisco Barros
- Laboratório de Ecologia Bentônica (LEB), Centro Interdisciplinar de Energia e Ambiente (CIEnAm), Instituto de Biologia da Universidade Federal da Bahia, Rua Barão de Jeremoabo, Campus de Ondina, Salvador, 40170-115, Bahia, Brazil
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Mathew J, Gopinath A. Spatial and Temporal Variations of Arsenic Distribution in a Tropical Estuary Along the West Coast of India. MARINE POLLUTION BULLETIN 2019; 149:110567. [PMID: 31548170 DOI: 10.1016/j.marpolbul.2019.110567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 08/27/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
Arsenic (As) contamination was studied and reported for the first time in the sediments of the Cochin estuary. Surface sediment samples were collected from twenty-seven stations encompassing the entire estuary constituting south, central and north estuary. The total As concentration varied from 0.01 mg/kg to 9.28 mg/kg and undetected to 23.37 mg/kg during the pre and post-monsoon. The degree of contamination assessed in terms of geochemical indices such as contamination factor (CF), geoaccumulation index (Igeo) and enrichment factor (EF) unraveled the As contamination to be meager. The application of risk index factor and sediment quality guidelines showed that the As concentration in the estuary is below the background concentration. Pearson correlation analysis of As with iron and TOC exhibited significant weak and poor correlations with these variables.
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Affiliation(s)
- Jose Mathew
- Department of Chemistry, St Albert's College, Kochi, India
| | - Anu Gopinath
- Kerala University of Fisheries and Ocean Studies, Kochi, India.
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Hatje V, Andrade RLB, Jesus RM, Masqué P, Albergaria-Barbosa ACR, de Andrade JB, Santos ACSS. Historical records of mercury deposition in dated sediment cores reveal the impacts of the legacy and present-day human activities in Todos os Santos Bay, Northeast Brazil. MARINE POLLUTION BULLETIN 2019; 145:396-406. [PMID: 31590802 DOI: 10.1016/j.marpolbul.2019.06.041] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 06/13/2019] [Accepted: 06/13/2019] [Indexed: 06/10/2023]
Abstract
We determined depth profiles of total mercury (T-Hg) in six 210Pb-dated sediment cores from Todos os Santos Bay to reconstruct the history of anthropogenic Hg accumulation. We also assessed superficial sediments samples from five estuaries. T-Hg concentrations (5-3500 μg kg-1) presented a large spatial and temporal variability. T-Hg concentrations in Ribeira Bay increased up to 200-fold along time, whereas the fluxes of T-Hg are substantially higher (up to 10,000 fold) than present-day wet deposition for industrialized areas. Sedimentary records indicate that a chlor-alkali plant has been the main source of Hg pollution until the present, although the T-Hg records suggest that harbor, shrimp farming, and oil refinery activities, besides Hg atmospheric depositions, are important across the bay. Sediments in the Ribeira Bay act as an important Hg sink. If sediments are eroded or disturbed, they may release Hg, thus posing a serious risk to wildlife and ecosystem health. CAPSULE: Sedimentary cores provide data on preindustrial levels and also anthropogenic fluxes of Hg for the appraisal of the magnitude, processes and potential risks of the contamination.
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Affiliation(s)
- V Hatje
- CIEnAm & Inst. de Química, Universidade Federal da Bahia, Bahia, Brazil.
| | - R L B Andrade
- CIEnAm & Inst. de Química, Universidade Federal da Bahia, Bahia, Brazil
| | - R M Jesus
- CIEnAm & Inst. de Química, Universidade Federal da Bahia, Bahia, Brazil
| | - P Masqué
- Centre for Marine Ecosystems Research, School of Science, Edith Cowan University, Joondalup, Australia; Departament de Física, Institut de Ciència i Tecnologia Ambientals, Universitat Autònoma de Barcelona, Bellaterra, Spain
| | | | - J B de Andrade
- CIEnAm & Inst. de Química, Universidade Federal da Bahia, Bahia, Brazil; SENAI-CIMATEC University Center, 41650-010 Salvador, Bahia, Brazil
| | - A C S S Santos
- CIEnAm & Inst. de Química, Universidade Federal da Bahia, Bahia, Brazil
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de Souza ACM, de Almeida MG, Pestana IA, de Souza CMM. Arsenic Exposure and Effects in Humans: A Mini-Review in Brazil. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2019; 76:357-365. [PMID: 30569210 DOI: 10.1007/s00244-018-00586-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 12/07/2018] [Indexed: 06/09/2023]
Abstract
Arsenic (As) is widely studied in several countries due to its toxicity to biota in the environment. Arsenic sources may be natural or anthropogenic, and the mobility of the element is ruled by physicochemical conditions that also define the dominant As species in the environment. Arsenic levels are evaluated in various abiotic and biotic environmental samples. The highest As levels are observed in sediment, from where it may be mobilized into the aquifers. This article reviews studies about As in the world but with emphasis on studies performed in Brazil, a country where continental water bodies are a common geographic feature. We reviewed 64 studies published between 1985 and 2016. The results indicate that in recent years more studies have been conducted to determine As levels in foods and human samples as a tool to evaluate the exposure of populations and identify potential sources. In Brazil, the main problems associated with contamination with As are the use of wood preservatives and herbicides as well as the impact caused by mining. Also, the precarious character of sewage treatment systems contributes to the contamination of water bodies.
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Affiliation(s)
- Annaliza Carvalho Meneguelli de Souza
- Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia-Avenida Alberto Lamego, Universidade Estadual do Norte Fluminense, 2000, Horto, Campos dos Goytacazes, RJ, 28015-620, Brazil.
| | - Marcelo Gomes de Almeida
- Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia-Avenida Alberto Lamego, Universidade Estadual do Norte Fluminense, 2000, Horto, Campos dos Goytacazes, RJ, 28015-620, Brazil
| | - Inácio Abreu Pestana
- Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia-Avenida Alberto Lamego, Universidade Estadual do Norte Fluminense, 2000, Horto, Campos dos Goytacazes, RJ, 28015-620, Brazil
| | - Cristina Maria Magalhães de Souza
- Laboratório de Ciências Ambientais, Centro de Biociências e Biotecnologia-Avenida Alberto Lamego, Universidade Estadual do Norte Fluminense, 2000, Horto, Campos dos Goytacazes, RJ, 28015-620, Brazil
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da Mota Araujo HR, Fernandes MN, da Cruz AL. Gill Morphology and Na +/K +-ATPase Activity of Gobionellus oceanicus (Teleostei: Gobiidae) in an Estuarine System. Biol Trace Elem Res 2019; 187:526-535. [PMID: 29948908 DOI: 10.1007/s12011-018-1393-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Accepted: 05/21/2018] [Indexed: 01/30/2023]
Abstract
Gobionellus oceanicus is a species widely distributed on the Atlantic coast and may be susceptible to anthropic effects. This study evaluated the morphology and the Na+/K+-ATPase activity of G. oceanicus gills considering the concentration of metals in the fish and Subaé River estuary. Although the metal concentrations detected in the water and sediment did not exceed certain limits, CONAMA (Brazilian Environment Council), TEL (Threshold Effect Level), and PEL (Probable Effect Level), the metals levels in gills plus muscle and skin of G. oceanicus were above the permitted setting of the Ministry of Health, Brazil. The pavement epithelial cells (PVC) of the gill filament was observed that there were long microridges either in the apical surface or in the lamella; especially, microridges degeneration was shown in some PVC from filament epithelium. The number of ionocyte and the volume density were (0.02 ± 0.001)/μm and (0.38 ± 0.27) %, respectively. The activity of Na+/K+-ATPase was 1.13 ± 0.76 μM Pi mg protein-1 h-1. We describe the volume density and number of ionocytes and Na+/K+-ATPase enzymatic activity in G. oceanicus for the first time, which is useful for basic and comparative future studies to support aquatic biomonitoring.
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Affiliation(s)
- Helena Rachel da Mota Araujo
- Institute of Biology, Federal University of Bahia (UFBA), Barão de Geremoabo, 147, Salvador, BA, 40170-115, Brazil.
| | - Marisa Narciso Fernandes
- Department of Physiological Sciences, Federal University of São Carlos (UFSCar), Rodovia Washington Luiz, km 235, São Carlos, SP, 13565-905, Brazil
| | - André Luis da Cruz
- Institute of Biology, Federal University of Bahia (UFBA), Barão de Geremoabo, 147, Salvador, BA, 40170-115, Brazil.
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Cagnin RC, Quaresma VS, Chaillou G, Franco T, Bastos AC. Arsenic enrichment in sediment on the eastern continental shelf of Brazil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 607-608:304-316. [PMID: 28692900 DOI: 10.1016/j.scitotenv.2017.06.162] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 06/19/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
This study focuses on the vertical distribution of total and reactive As in two contrasted coastal sedimentary environments: the Abrolhos Continental Shelf (ACS), a carbonate and siliciclastic shelf sediment, and the Doce River Continental Shelf (DRCS), a submerged delta system. The Doce River was the location of a massive ore tailings dam collapsed in November 2015. Millions of liters of tailings were dumped into the river and reached the continental shelf, causing the country's biggest environmental disaster. We evaluated the As content in sediment of the DRCS before the dam collapse. At both sites, the total As background measured in bottom sediment revealed relative natural enrichment (above 8mg/kg). Content of As decrease with depth; reactive As showed surficial peaks which were associated with Fe and Mn oxides. The ACS sediment did not show significant enrichment or contamination of As, with an enrichment factor (EF) of approximately 2 and a geoaccumulation index (Igeo) near 0. In contrast, the DRCS exhibited severe As enrichment (EF=15) and contamination (Igeo between 3-4). This enrichment is attributed to long-term iron and gold exploitation in the Doce River watershed. The high levels of reactive As, up to 108 mg/kg, alert us to an environmental risk due to potential As bioaccessibility. These data provide an important perspective on the As contamination in continental shelves and encourage the monitoring of the ore mine environmental impacts.
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Affiliation(s)
- R C Cagnin
- Department of Oceanographie, University of Espírito Santo State, Vitória, ES 29075-910, Brazil.
| | - V S Quaresma
- Department of Oceanographie, University of Espírito Santo State, Vitória, ES 29075-910, Brazil
| | - G Chaillou
- Canada Research Chair in Geochemistry of Hydrogeosystems, Département de Biologie, Chimie, Géographie, Université du Quebec à Rimouski, Rimouski, QC G5L 3A1, Canada
| | - T Franco
- Department of Oceanographie, University of Espírito Santo State, Vitória, ES 29075-910, Brazil
| | - A C Bastos
- Department of Oceanographie, University of Espírito Santo State, Vitória, ES 29075-910, Brazil
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de Santana CO, de Jesus TB, de Aguiar WM, de Jesus Sant'anna Franca-Rocha W, Soares CAC. Assessment of health risk related to the ingestion of trace metals through fish consumption in Todos os Santos Bay. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:204. [PMID: 28374187 DOI: 10.1007/s10661-017-5913-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Accepted: 03/23/2017] [Indexed: 06/07/2023]
Abstract
This study was carried out to evaluate the concentration of trace elements (As, Cd, Cu, Pb, and Zn) in the muscle of carnivorous fish species from three different areas of Todos os Santos Bay (BTS), Bahia State, Brazil. Trace elements were analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES), and consumption rates advisory for minimizing chronic systemic effects in children and adults were estimated. As concentrations in fish samples from Jiribatuba were higher than legal limits set by FAO, and Cd concentrations in fish from Iguape Bay were high in comparison with FAO and EC. This study provides information about the fish consumption limits, considering the elements concentrations observed in the analyses, in particular As and Cd, necessary for minimizing potential health risks.
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Affiliation(s)
- Carolina Oliveira de Santana
- Instituto de Geociências (IGEO), Universidade Federal da Bahia (UFBA), R. Barão de Jeremoabo, s/n - Ondina, Salvador, BA, 40170-290, Brazil.
| | - Taíse Bomfim de Jesus
- Programa de Pós-Graduação em Modelagem em Ciências da Terra e do Ambiente (PPGM), Universidade Estadual de Feira de Santana (UEFS), Avenida Transnordestina, s/n - Novo Horizonte, Feira de Santana, BA, 44036-900, Brazil
| | - Willian Moura de Aguiar
- Programa de Pós-Graduação em Ecologia e Evolução, Universidade Estadual de Feira de Santana (UEFS), Avenida Transnordestina, s/n - Novo Horizonte, Feira de Santana, BA, 44036-900, Brazil
| | - Washington de Jesus Sant'anna Franca-Rocha
- Programa de Pós-Graduação em Modelagem em Ciências da Terra e do Ambiente (PPGM), Universidade Estadual de Feira de Santana (UEFS), Avenida Transnordestina, s/n - Novo Horizonte, Feira de Santana, BA, 44036-900, Brazil
| | - Carlos Alberto Caroso Soares
- Departamento de Antropologia e Etnologia, Universidade Federal da Bahia (UFBA), Estrada de São Lázaro, 197 Federação, Salvador, BA, 40210-730, Brazil
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de Santana CO, de Jesus TB, de Aguiar WM, de Jesus Sant'anna Franca-Rocha W, Soares CAC. Trace elements in muscle of three fish species from Todos os Santos Bay, Bahia State, Brazil. ENVIRONMENTAL MONITORING AND ASSESSMENT 2017; 189:123. [PMID: 28236150 DOI: 10.1007/s10661-017-5801-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 01/23/2017] [Indexed: 06/06/2023]
Abstract
In this study, an analysis was performed on the concentrations of the trace elements Al, As, Ba, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, V, and Zn in muscle of two carnivorous and one planktivorous fish species collected at Todos os Santos Bay (BTS). The accumulation order of the trace elements in Lutjanus analis was Al >Zn >Fe >Cr >Ba >Ni. In Cetengraulis edentulus, the order was Al >Fe >Zn >Cr >Ni >Mn >As. In the species Diapterus rhombeus, the order was Al >Fe >Zn >Cr >Ni >Mn >Cd. To determine the risk related to the consumption of fish, toxicity guidelines were used as standard references. It was observed that the species C. edentulus contained concentrations of As exceeding WHO limits, but these concentrations were acceptable according to the Agência Nacional de Vigilância Sanitária (ANVISA) guidelines. Cd levels were found only in D. rhombeus and in low concentrations according to the determinations of WHO and ANVISA. Pb levels were not detected in any of the three fish species. The analyzed elements did not differ statistically according to the species and feeding habits. The results point to possible risks of human contamination by As related to the consumption of the fish species C. edentulus from the BTS.
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Affiliation(s)
- Carolina Oliveira de Santana
- Programa de Pós-Graduação em Geoquímica: Petróleo e Meio Ambiente, Instituto de Geociências (IGEO), Universidade Federal da Bahia (UFBA), Rua Barão de Jeremoabo, s/n, Ondina, Salvador, BA, CEP:40170-290, Brazil
| | - Taíse Bomfim de Jesus
- Programa de Pós-Graduação em Modelagem em Ciências da Terra e do Ambiente, Universidade Estadual de Feira de Santana (UEFS), Avenida Transnordestina, s/n, Novo Horizonte, Feira de Santana, BA, CEP:44036-900, Brazil
| | - William Moura de Aguiar
- Programa de Pós-Graduação em Ecologia e Evolução, Universidade Estadual de Feira de Santana, Avenida Transnordestina, s/n, Novo Horizonte, Feira de Santana, BA, CEP 44036-900, Brazil.
| | - Washington de Jesus Sant'anna Franca-Rocha
- Programa de Pós-Graduação em Modelagem em Ciências da Terra e do Ambiente, Universidade Estadual de Feira de Santana (UEFS), Avenida Transnordestina, s/n, Novo Horizonte, Feira de Santana, BA, CEP:44036-900, Brazil
| | - Carlos Alberto Caroso Soares
- Departamento de Antropologia e Etnologia, Universidade Federal da Bahia (UFBA), Estrada de São Lázaro, 197, Federação, Salvador, BA, CEP:40210-730, Brazil
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Miranda DDA, de Carvalho-Souza GF. Are we eating plastic-ingesting fish? MARINE POLLUTION BULLETIN 2016; 103:109-114. [PMID: 26763323 DOI: 10.1016/j.marpolbul.2015.12.035] [Citation(s) in RCA: 98] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/23/2015] [Accepted: 12/22/2015] [Indexed: 05/23/2023]
Abstract
Yes, we are eating plastic-ingesting fish. A baseline assessment of plastic pellet ingestion by two species of important edible fish caught along the eastern coast of Brazil is described. The rate of plastic ingestion by king mackerel (Scomberomorus cavalla) was quite high (62.5%), followed by the Brazilian sharpnose shark (Rhizoprionodon lalandii, 33%). From 2 to 6 plastic resin pellets were encountered in the stomachs of each fish, with sizes of from 1 to 5 mm, and with colors ranging from clear to white and yellowish. Ecological and health-related implications are discussed and the potential for transferring these materials through the food-chain are addressed
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Affiliation(s)
- Daniele de A Miranda
- Laboratório de Compostos Orgânicos em Ecossistemas Costeiros e Marinhos (OrganoMAR), Departamento de Oceanografia, Universidade Federal de Pernambuco, Av. Arquitetura, s/n, Cidade Universitária, 50740-550 Recife, Pernambuco, Brazil.
| | - Gustavo Freire de Carvalho-Souza
- CAPES Foundation, Ministry of Education of Brazil, 70040-020 Brasília, DF, Brazil; Associação Brasileira do Lixo Marinho (ABLM), Brazil.
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Fang TH, Chen YS. Arsenic speciation and diffusion flux in Danshuei Estuary sediments, Northern Taiwan. MARINE POLLUTION BULLETIN 2015; 101:98-109. [PMID: 26581811 DOI: 10.1016/j.marpolbul.2015.11.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 11/02/2015] [Accepted: 11/05/2015] [Indexed: 06/05/2023]
Abstract
Sedimentary As, Fe and Mn species in core sediments from the Danshuei Estuary, an anoxic estuary, were studied using a five-sequential extraction method followed by chemical analyses of these elements. The sediment texture, redox potential and dissolved concentrations of these elements in pore water were also determined. Dissolved As diffusion flux was also calculated. Higher concentrations of sedimentary As were found at the middle and lower estuary stations. The sedimentary As species in the samples were dominated by three fractions: amorphous and poorly-crystalline; and well crystallized hydrous oxides of Fe and Al; and residual phases, accounting for 90% of the total As pool. The geochemical behavior of sedimentary As in the Danshuei Estuary is strongly influenced by the redox potential and Fe oxides. The dissolved As concentrations in pore water correlated inversely with the redox potential. The sediment served as a source of dissolved As and the diffusion flux ranged from 0.047-0.35 μg cm(-2) y(-1).
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Affiliation(s)
- Tien-Hsi Fang
- Department of Marine Environmental Informaticst, National Taiwan Ocean University, Keelung City 202, Taiwan.
| | - Ying-Siou Chen
- Department of Marine Environmental Informaticst, National Taiwan Ocean University, Keelung City 202, Taiwan
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Hoff NT, Figueira RCL, Abessa DMS. Levels of metals, arsenic and phosphorus in sediments from two sectors of a Brazilian Marine Protected Area (Tupinambás Ecological Station). MARINE POLLUTION BULLETIN 2015; 91:403-409. [PMID: 25467864 DOI: 10.1016/j.marpolbul.2014.10.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 10/14/2014] [Accepted: 10/28/2014] [Indexed: 06/04/2023]
Abstract
The Tupinambás Ecological Station (TES) is a Marine Protected Area consisting of two sectors: the Archipelago of Alcatrazes and the Cabras and Palmas islets. This investigation aimed to provide a first diagnosis of the concentrations of metals (Al,Cr,Cu,Fe,Hg,Ni,Pb,Zn), As and P in sediments from the TES. 24 sediment samples were collected in both sectors using a Van Veen grab sampler. Sediment textures and levels of Organic Matter (OM) and CaCO3 were determined, as well as the concentrations of the above-mentioned elements after partial acid digestion. Sediments were predominantly sandy. Higher levels of CaCO3 occurred in the Alcatrazes sector, whereas the OM contents were higher in the islets sector. Metals concentrations were low and associated with fines, while P and As presented a different behavior. The observed concentrations to all studies elements in sediments from the TES were considered as background values.
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Affiliation(s)
- Natasha T Hoff
- Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, São Paulo, São Paulo 05508-120, Brazil
| | - Rubens C L Figueira
- Universidade de São Paulo, Instituto Oceanográfico, Praça do Oceanográfico, 191, São Paulo, São Paulo 05508-120, Brazil
| | - Denis M S Abessa
- Universidade Estadual Paulista - Campus Experimental do Litoral Paulista, Núcleo de Estudos sobre Poluição e Ecotoxicologia Aquática (NEPEA), Praça Infante Dom Henrique, s/n, São Vicente, São Paulo 11330-900, Brazil
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Lopes Dos Santos WN, Macedo SM, Teixeira da Rocha SN, Souza de Jesus CN, Cavalcante DD, Hatje V. Evaluation of optimal conditions for determination of low selenium content in shellfish samples collected at Todos os Santos Bay, Bahia, Brazil using HG-AFS. ENVIRONMENTAL MONITORING AND ASSESSMENT 2014; 186:5027-5032. [PMID: 24771464 DOI: 10.1007/s10661-014-3756-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
This work proposes a procedure for the determination of total selenium content in shellfish after digestion of samples in block using cold finger system and detection using atomic fluorescent spectrometry coupled hydride generation (HG AFS). The optimal conditions for HG such as effect and volume of prereduction KBr 10 % (m/v) (1.0 and 2.0 ml) and concentration of hydrochloric acid (3.0 and 6.0 mol L(-1)) were evaluated. The best results were obtained using 3 mL of HCl (6 mol L(-1)) and 1 mL of KBr 10 % (m/v), followed by 30 min of prereduction for the volume of 1 mL of the digested sample. The precision and accuracy were assessed by the analysis of the Certified Reference Material NIST 1566b. Under the optimized conditions, the detection and quantification limits were 6.06 and 21.21 μg kg(-1), respectively. The developed method was applied to samples of shellfish (oysters, clams, and mussels) collected at Todos os Santos Bay, Bahia, Brazil. Selenium concentrations ranged from 0.23 ± 0.02 to 3.70 ± 0.27 mg kg(-1) for Mytella guyanensis and Anomalocardia brasiliana, respectively. The developed method proved to be accurate, precise, cheap, fast, and could be used for monitoring Se in shellfish samples.
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Krull M, Abessa DMS, Hatje V, Barros F. Integrated assessment of metal contamination in sediments from two tropical estuaries. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 106:195-203. [PMID: 24853133 DOI: 10.1016/j.ecoenv.2014.04.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2013] [Revised: 04/22/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
In order to evaluate if sediment metal contamination is responsible for benthic degradation and identify possible reference sites in Todos os Santos Bay (TSB), comparisons between a highly impacted (Subaé) and less impacted (Jaguaripe) estuarine systems were made based on (i) field assessment of macrobenthic assemblage, (ii) sediment metal concentrations and (iii) chronic toxicity test with the tropical copepod Nitokra sp. Data were integrated by multivariate analysis (BIOENV and PCA) and the ratio-to-mean (RTMe) approach. Estuaries were divided into four different salinity zones to avoid misclassification of benthic conditions. Salinity was the main variable correlated to the benthic distribution in both estuaries, indicating that categories based on salinity features seem to be suitable in TSB. Correspondence among lines of evidence differed in low and high metal contaminated systems. Chronic toxicity was found along both the entire systems, being considerably higher in Jaguaripe. However, there was no clear evidence of metal contamination and benthic alteration in most stations of Jaguaripe. Although the concentrations of Sr and Cu were correlated to the benthic assemblage in Jaguaripe, it is unlikely that toxicity has been caused by these elements. The benthic assemblage distribution of Jaguaripe seems to be rather related to natural stressful conditions of transitional waters. Even though the Jaguaripe estuary might not be pristine, it can be used as a reference estuary for benthic assessment in TSB. Regarding the Subaé estuary, toxicity and Zn were also correlated to the benthic assemblage and most stations showed signs of benthic alteration and metal contamination. All lines of evidence were in agreement providing evidences that metal contamination might be responsible for benthic degradation in Subaé.
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Affiliation(s)
- Marcos Krull
- Laboratório de Ecologia Bentônica, PPGEcoBio, Instituto de Biologia, Rua Barão de Geremoabo s/n., Campus Ondina, Universidade Federal da Bahia, CEP 40170-115 Salvador, BA, Brazil.
| | - Denis M S Abessa
- Núcleo de Estudos sobre Poluição e Ecotoxicologia Aquática, UNESP, Campus Experimental do Litoral Paulista, São Vicente, SP, Brazil.
| | - Vanessa Hatje
- Laboratório de Oceanografia Química, Instituto de Química, Universidade Federal da Bahia, INCT de Ambientes Marinhos Tropicais, Salvador, BA, Brazil.
| | - Francisco Barros
- Laboratório de Ecologia Bentônica, PPGEcoBio, Instituto de Biologia, Rua Barão de Geremoabo s/n., Campus Ondina, Universidade Federal da Bahia, CEP 40170-115 Salvador, BA, Brazil.
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25
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Leite AS, Santos LL, Costa Y, Hatje V. Influence of proximity to an urban center in the pattern of contamination by marine debris. MARINE POLLUTION BULLETIN 2014; 81:242-247. [PMID: 24530003 DOI: 10.1016/j.marpolbul.2014.01.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2013] [Revised: 01/06/2014] [Accepted: 01/10/2014] [Indexed: 06/03/2023]
Abstract
In order to test the relationship between the occurrence of marine debris and the distance from urban areas, nine beaches in the metropolitan area of Salvador, Bahia, Brazil and the adjacent northern coast were studied. Marine debris were collected, sorted in several categories and weighed. It was observed that plastics were numerically the most abundant component of the collected debris. As expected, the beaches closest to Salvador presented the largest density of debris, with the exception of the Porto da Barra beach, which has an efficient public cleaning system and does not have any vegetation, making it difficult to accumulate solid waste. Linear regression analyses showed significant relationships between the distance from the urban center (Salvador) and the number of marine debris per m(2), the total number of debris per beach (abundance), and the diversity of debris types (richness). The results showed that proximity to urban regions was a key factor in the marine debris distribution along the coast.
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Affiliation(s)
- A S Leite
- Instituto de Química, Universidade Federal da Bahia, Bahia 40170-290, Brazil
| | - L L Santos
- Instituto de Química, Universidade Federal da Bahia, Bahia 40170-290, Brazil
| | - Y Costa
- Instituto de Química, Universidade Federal da Bahia, Bahia 40170-290, Brazil
| | - V Hatje
- Instituto de Química, Universidade Federal da Bahia, Bahia 40170-290, Brazil.
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26
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Recent advances in flow-based sample pretreatment for the determination of metal species by atomic spectrometry. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s11434-013-5666-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Watts MJ, Barlow TS, Button M, Sarkar SK, Bhattacharya BD, Alam MA, Gomes A. Arsenic speciation in polychaetes (Annelida) and sediments from the intertidal mudflat of Sundarban mangrove wetland, India. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2013; 35:13-25. [PMID: 22736103 DOI: 10.1007/s10653-012-9471-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Accepted: 06/06/2012] [Indexed: 06/01/2023]
Abstract
This paper documents the concentration of total arsenic and individual arsenic species in four soft-bottom benthic polychaetes (Perenereis cultifera, Ganganereis sootai, Lumbrinereis notocirrata and Dendronereis arborifera) along with host sediments from Sundarban mangrove wetland, India. An additional six sites were considered exclusively for surface sediments for this purpose. Polychaetes were collected along with the host sediments and measured for their total arsenic content using inductively coupled plasma mass spectrometry. Arsenic concentrations in polychaete body tissues varied greatly, suggesting species-specific characteristics and inherent peculiarities in arsenic metabolism. Arsenic was generally present in polychaetes as arsenate (As(V) ranges from 0.16 to 0.50 mg kg(-1)) or arsenite (As(III) ranges from 0.10 to 0.41 mg kg(-1)) (30-53 % as inorganic As) and dimethylarsinic acid (DMA(V) <1-25 %). Arsenobetaine (AB < 16 %), and PO(4)-arsenoriboside (8-48 %) were also detected as minor constituents, whilst monomethylarsonic acid (MA(V)) was not detected in any of the polychaetes. The highest total As (14.7 mg kg(-1) dry wt) was observed in the polychaete D. arborifera collected from the vicinity of a sewage outfall in which the majority of As was present as an uncharacterised compound (10.3 mg kg(-1) dry wt) eluted prior to AB. Host sediments ranged from 2.5 to 10.4 mg kg(-1) of total As. This work supports the importance of speciation analysis of As, because of the ubiquitous occurrence of this metalloid in the environment, and its variable toxicity depending on chemical form. It is also the first work to report the composition of As species in polychaetes from the Indian Sundarban wetlands.
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Affiliation(s)
- M J Watts
- British Geological Survey, Nottingham, UK.
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Ferreira SL, Silva LO, de Santana FA, Junior MM, Matos GD, dos Santos WN. A review of reflux systems using cold finger for sample preparation in the determination of volatile elements. Microchem J 2013. [DOI: 10.1016/j.microc.2012.08.015] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hatje V, Barros F. Overview of the 20th century impact of trace metal contamination in the estuaries of Todos os Santos Bay: past, present and future scenarios. MARINE POLLUTION BULLETIN 2012; 64:2603-2614. [PMID: 22841387 DOI: 10.1016/j.marpolbul.2012.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 07/02/2012] [Accepted: 07/03/2012] [Indexed: 06/01/2023]
Abstract
This paper discusses the distribution patterns of trace metals in sediments and suspended particulate matter (SPM) in the three main estuaries of the Todos os Santos Bay (BTS), Brazil, during dry and rainy seasons. Data available up to 2012 was also reviewed to assess the status of contamination. For most elements, metal concentrations in sediments decreased from the tidal limits to the lower estuary. Metals in SPM presented more complex distributions along the salinity gradient. Metal variability between rainy and dry conditions was only significant for SPM data. Of the BTS estuaries, the levels of Cd, Zn, Pb and Cu are highest in the Subaé estuary, and they seem to be promoting harmful biological effects in macrofauna, and also may pose potential human health risks. Despite the evidence of important localized contamination, much of the data compiled indicates that the bay and its estuaries are still relatively preserved.
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Affiliation(s)
- Vanessa Hatje
- Laboratório de Oceanografia Química, Instituto de Química, UFBA, Campus Ondina, Salvador, BA 40170-290, Brazil.
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Butwong N, Srijaranai S, Ngeontae W, Burakham R. Speciation of arsenic (III) and arsenic (V) based on quenching of CdS quantum dots fluorescence using hybrid sequential injection-stopped flow injection gas-diffusion system. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 97:17-23. [PMID: 22743609 DOI: 10.1016/j.saa.2012.05.054] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 05/15/2012] [Accepted: 05/26/2012] [Indexed: 06/01/2023]
Abstract
A hybrid sequential injection-stopped flow injection system was developed for the speciation of arsenic based on the quenching of mercaptoacetic acid capped cadmium sulfide quantum dots (CdS-MAA QDs) fluorescence intensity. The analytical procedure involves the generation of arsine from As(III) by sodium borohydride in acetate buffer medium pH 6.0. The generated arsine (donor stream) diffuses across the PTFE membrane of the gas-diffusion unit into an acceptor stream and then interacts with CdS-MAA QDs. Total arsenic was determined after pre-reduction of As(V) to As(III) with 1% (m/v) mercaptoacetic acid. Concentration of As(V) in the sample solutions can be deduced from the difference of total arsenic and As(III). Optimization of the experimental conditions and instrumental parameters were investigated. Under optimal conditions, limits of detection were 20 μg L(-1) for As(III) and 40 μg L(-1) for As(V). Recoveries in the range 84-103% were obtained from sediment sample.
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Affiliation(s)
- Nutthaya Butwong
- Materials Chemistry Research Unit, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
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Brito GB, de Souza TL, Bressy FC, Moura CWN, Korn MGA. Levels and spatial distribution of trace elements in macroalgae species from the Todos os Santos Bay, Bahia, Brazil. MARINE POLLUTION BULLETIN 2012; 64:2238-2244. [PMID: 22795614 DOI: 10.1016/j.marpolbul.2012.06.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2011] [Revised: 06/15/2012] [Accepted: 06/20/2012] [Indexed: 06/01/2023]
Abstract
Concentrations of elements (As, Ba, Cd, Co, Cr, Cu, Li, Mn, Ni, Pb, V, and Zn) were determined in ten species of macroalgae collected from six sites in the Todos os Santos Bay, Brazil, between May and July of 2010. An optimized microwave-assisted digestion procedure was used to digest the samples. The elements were determined by inductively coupled plasma mass spectrometry (ICP-MS). A wide range of metal concentrations were observed between the species analysed. Somewhat higher concentrations of Cd (5.99μg g(-1)), Co (372μg g(-1)), Mn (640μg g(-1)), Ni (17.2μg g(-1)) and Zn (51.4μg g(-1)) were found in the brown macroalgae species Padina spp., whereas elements, such as As (19.7μg g(-1)) and Pb (8.27μg g(-1)), were mainly concentrated in the species Sargassum spp. and Bostrychia montagnei, respectively. Statistical analyses (ANOVA) of the Padina data showed significant inter-site differences for all metals examined except nickel.
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Affiliation(s)
- Geysa B Brito
- Instituto de Química, Universidade Federal da Bahia, Grupo de Pesquisa em Química Analítica, Campus de Ondina, 40170-115, Salvador, Bahia, Brazil
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de Souza MM, Windmöller CC, Hatje V. Shellfish from Todos os Santos Bay, Bahia, Brazil: treat or threat? MARINE POLLUTION BULLETIN 2011; 62:2254-2263. [PMID: 21803378 DOI: 10.1016/j.marpolbul.2011.07.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2011] [Revised: 06/30/2011] [Accepted: 07/03/2011] [Indexed: 05/31/2023]
Abstract
This study determined the concentrations of major and trace elements in shellfish (oysters, clams and mussels) and conducted an assessment of the health risks due to the consumption of contaminated seafood. Samples were collected at 34 sites along Todos os Santos Bay, Brazil. The elements were determined by ICP OES and Hg by Direct Mercury Analysis. Relatively high concentrations of trace elements (As, Zn, Se and Cu) were found in seafood tissues. Potential daily intake of As, Co, Se, Zn and Cu associated to shellfish consumption suggested relevant non-carcinogenic risk for all studied locations. Copper was the element that posed the greatest non-carcinogenic risk, while Pb posed the highest carcinogenic risk. Health risks for humans were greatest from the consumption of mussels. Contaminated shellfish offer the greatest risk for children, subsistence fishers and subsistence shellfish consumers.
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Affiliation(s)
- Manuel M de Souza
- Lab. de Oceanografia Química, Instituto de Química, UFBA, INCT de Energia e Ambiente, Salvador, BA, Brazil
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