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Rao MN, Gaikwad S, Ram A, Pradhan UK, Sautya S, Kumbhar L, Udayakrishnan PB, Siddaiha V. Effects of sedimentary heavy metals on meiobenthic community in tropical estuaries along eastern Arabian Sea. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2023; 45:731-750. [PMID: 35292879 DOI: 10.1007/s10653-022-01239-3] [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: 10/28/2021] [Accepted: 02/25/2022] [Indexed: 06/14/2023]
Abstract
The central west coast of India comprises the 720 km long coastline of Maharashtra state and houses widespread industrial zones along the eastern Arabian Sea. Sediments from seven industrial-dominated estuaries along the central west coast were studied for metal enrichment and benthic assemblages to determine sediment quality status and ecological effects in these areas. The suit of geochemical indices highlighted the contamination of sediment in the estuaries concerning heavy metals. Positive correlations of Hg with Co, Zn, Ni, Cr, and Pb indicated the source similarity and effect of anthropogenic activity. non-Metric Multidimensional Scaling (n-MDS) based on meiofaunal abundance showed a cleared separation of clusters through the gradient of heavy metal concentrations. The Canonical Correspondence Analysis (CCA) results with the Monte Carlo test signified those heavy metals influenced the meiobenthic community. Heavy metals (Cr, Ni, Zn, Cd, Pb, and Hg) were the main drivers shaping the meiofaunal community with a significant (p < 0.05) reduction in taxa richness, diversity, and evenness. Dominant meiofaunal assemblages evidence the tolerance of foraminiferans and nematodes. However, these taxa were affected by decreased abundance at impacted sites compared to other fauna. In conclusion, results demonstrated that impairment occurred in the meiofaunal community in most estuaries (except AB and KK).
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Affiliation(s)
- M Nageswar Rao
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
- Department of Organic Chemistry and Food, Drug and Water, Andhra University, Visakhapatnam, 530003, India
| | - S Gaikwad
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
| | - Anirudh Ram
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
| | - U K Pradhan
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India.
| | - S Sautya
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
| | - L Kumbhar
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
| | - P B Udayakrishnan
- CSIR-National Institute of Oceanography, Regional Centre, Mumbai, 400053, India
| | - V Siddaiha
- Department of Organic Chemistry and Food, Drug and Water, Andhra University, Visakhapatnam, 530003, India
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Mora M, Walker TR, Willis R. Multiple contaminant ecological risk evaluation in small craft harbour sediments in Nova Scotia, Canada. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 834:155266. [PMID: 35447185 DOI: 10.1016/j.scitotenv.2022.155266] [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: 02/24/2022] [Revised: 04/08/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
Small craft harbours are vital for the fishing industry and have high socioeconomic and cultural importance for surrounding communities. Presence of potential contaminants of concern in small craft harbour sediments can have significant impacts in biota and humans, including fishing activities and the local economy. While single contaminant sediment concentrations may be below sediment quality guidelines, the interaction of multiple contaminants in sediments may potentially exacerbate chemical ecological risk. An ecological risk evaluation for four classes of contaminants (i.e., petroleum hydrocarbons, polychlorinated biphenyls, polycyclic aromatic hydrocarbons and metals) was conducted in 31 small craft harbours in Nova Scotia, Canada, using two approaches (i.e., mean probable effect level quotient and number and frequency of sediment quality guideline exceedances). Most small craft harbours showed a low ecological risk to marine biota, with only two small craft harbours suggesting high risk. While urgent action is not needed, monitoring is recommended for these small craft harbours to confirm that pollution is not increasing, and to potentially identify and control contamination sources.
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Affiliation(s)
- Myriam Mora
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Rob Willis
- Dillon Consulting Limited, Halifax, Nova Scotia B3S 1B3, Canada
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Chen J, Zhang H, Xue J, Yuan L, Yao W, Wu H. Study on spatial distribution, potential sources and ecological risk of heavy metals in the surface water and sediments at Shanghai Port, China. MARINE POLLUTION BULLETIN 2022; 181:113923. [PMID: 35843161 DOI: 10.1016/j.marpolbul.2022.113923] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 06/30/2022] [Accepted: 07/03/2022] [Indexed: 06/15/2023]
Abstract
Heavy metal concentrations in surface waters and sediments of Shanghai port were measured to analyze the spatial distribution characteristics, sources and pollution degrees. The southern Shanghai port was heavily polluted by Cd, Pb, Cr and Cu in water, and the concentrations of Pb, Hg and Zn in sediments exceeded Effects Range Low. Cu, Pb, Cd and Cr in water were positively correlated in group, and they probably derived from industrial and domestic sewage, fossil fuel burning and vehicular pollution and represented 82.47 % of the contribution. Zn, Hg and As contaminations represented industrial and agricultural effluent sources and accounted for the remaining 17.53 %. Heavy metal pollution of Yangshan Port water was at high pollution, and the remaining sites were at low pollution. Most of the sampling sites were at moderate ecological risk in sediments, and the pollution of Cd, Hg and Zn were serious.
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Affiliation(s)
- Jianwu Chen
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China
| | - Hui Zhang
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China
| | - Junzeng Xue
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China
| | - Lin Yuan
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China
| | - Wei Yao
- Shanghai Coscoshipping industry co.ltd, Shanghai 200135, China
| | - Huixian Wu
- College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai 201306, China; Center for Research on the Ecological Security of Ports and Shipping, Shanghai Ocean University, Shanghai 201306, China.
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Mora M, Walker TR, Willis R. Spatiotemporal characterization of petroleum hydrocarbons and polychlorinated biphenyls in small craft harbour sediments in Nova Scotia, Canada. MARINE POLLUTION BULLETIN 2022; 177:113524. [PMID: 35279547 DOI: 10.1016/j.marpolbul.2022.113524] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 02/23/2022] [Accepted: 02/27/2022] [Indexed: 06/14/2023]
Abstract
Previous characterization of polycyclic aromatic hydrocarbons (PAHs) and metals has been conducted in small craft harbour (SCH) sediments in Nova Scotia, Canada, but petroleum hydrocarbons (PHCs) and polychlorinated biphenyls (PCBs) have not been spatiotemporally assessed. This study characterized the distribution of over 500 PHCs and PCBs samples in 31 SCHs sediments between 2000 and 2017. Federal and regional sediment quality guidelines were used to determine exceedances. Results showed exceedances for diesel and oil resembling PHCs, expected given their longer permanence in sediments and lower volatility. However, only 7% of the samples exceeded 500 ppm, threshold where benthic impairment is observed, showing low risk. PCBs do not pose high risk to biota since only six samples exceeded the higher effect level and 25% of them exceeded the lower effect one. Monitoring is recommended for SCHs with significant exceedances, as well as collectively assessing all contaminants characterized in SCHs.
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Affiliation(s)
- Myriam Mora
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Rob Willis
- Dillon Consulting Limited, Halifax, Nova Scotia B3S 1B3, Canada
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Che Z, Ahmed W, Weng J, Wenjie L, Mahmood M, Alatalo JM, Wenjie O, Nizamani MM, Lu W, Xian FX, Jie Y, Yunting W, Li W, Mehmood S. Distribution, pollution, and human health risks of persistent and potentially toxic elements in the sediments around Hainan Island, China. MARINE POLLUTION BULLETIN 2022; 174:113278. [PMID: 34995886 DOI: 10.1016/j.marpolbul.2021.113278] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 12/11/2021] [Accepted: 12/16/2021] [Indexed: 06/14/2023]
Abstract
Human activities have changed the global concentration of potentially toxic elements (PTEs) and significantly altered the marine ecosystem. Little is known about the concentrations of these PTEs around Hainan Island in China, or their distribution and human health risks. Understanding the variability of PTEs in marine sediments and how they accumulate is important not only for biodiversity and ecological conservation, but also for management of aquatic natural resources and human health risk assessments. This study showed that the concentrations of six PTEs (Cd, Cu, Zn, As, Pb, and Hg), sampled in nine different cities, were linked to human activities. In order to understand the ecological risks associated with PTE pollution, we calculated the contamination factor (CF), enrichment factor (EF), pollution load index (PLI), and geo-accumulation index (Igeo) of each element in each city. These indicators suggest that the pollution of Cd and Zn in the sediments of these cities is higher than that of the other PTEs. We also carried out a human health risk assessment which demonstrated the carcinogenic effects of Zn on children and adults in ChengMai, while Pb showed non-carcinogenic effects at all the studied sites, suggesting that Zn pollution in the sediments of ChengMai may pose human health risks. We would therefore advise that follow-up studies endeavor to monitor the levels of PTEs in the flora and fauna of these cities.
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Affiliation(s)
- Zhiwei Che
- Haikou Marine Environmental Monitoring Center, State Oceanic Administration, Haikou 570000, Hainan, China
| | - Waqas Ahmed
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Jiechang Weng
- Hainan Provincial Ecological and Environmental Monitoring Center, 571126, China
| | - Liu Wenjie
- College of Ecology and Environment, Hainan University, Haikou 570228, China
| | - Mohsin Mahmood
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Juha M Alatalo
- Environmental Science Center, Qatar University, Doha, Qatar
| | - Ou Wenjie
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Mir Muhammad Nizamani
- Key Laboratory of Tropical Biological Resources of Ministry of Education, College of Tropical Crops, Hainan University, Haikou, China
| | - Wang Lu
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Fu Xiu Xian
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Yang Jie
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Wang Yunting
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China
| | - Weidong Li
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China.
| | - Sajid Mehmood
- Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation of Hainan Province (Hainan University), Haikou 570228, China; College of Ecology and Environment, Hainan University, Haikou City, 570100, P.R China.
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6
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Cai P, Cai G, Chen X, Li S, Zhao L. The concentration distribution and biohazard assessment of heavy metal elements in surface sediments from the continental shelf of Hainan Island. MARINE POLLUTION BULLETIN 2021; 166:112254. [PMID: 33725564 DOI: 10.1016/j.marpolbul.2021.112254] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/15/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
The level of heavy metals (Cr, Co, Ni, Cu, Zn, and Pb) and Al2O3 were quantified in 140 surface sediment samples from the continental shelf of Hainan Island (CSHI). The mean heavy metal concentration in the decreasing order was: Cr > Zn > Pb > Ni > Cu > Co. Although heavy metals were locally enriched in the CSHI, the overall pollution level was relatively low. The biohazard assessment results of the mean effects range-median quotient (M-ERM-Q) and hazard quotient (HQ) for a single metal element (Cu, Pb, Zn) in the surface sediments showed that the exposure to individual heavy metals posed a low health risk. However, the biohazard assessment of multiple metals was higher than the single metals. Particular attention should be paid to the potential biological hazard from Cr and Ni in the CSHI.
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Affiliation(s)
- Pengjie Cai
- Guangzhou Marine Geological Survey, China Geological Survey, 510760 Guangzhou, China; Institute of Geological Survey and Faculty of Earth Resources, China University of Geosciences, 430074 Wuhan, China
| | - Guanqiang Cai
- Guangzhou Marine Geological Survey, China Geological Survey, 510760 Guangzhou, China.
| | - Xin Chen
- Institute of Geological Survey and Faculty of Earth Resources, China University of Geosciences, 430074 Wuhan, China
| | - Shun Li
- Guangzhou Marine Geological Survey, China Geological Survey, 510760 Guangzhou, China
| | - Li Zhao
- Guangzhou Marine Geological Survey, China Geological Survey, 510760 Guangzhou, China
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7
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Guerra-García JM, Navarro-Barranco C, Martínez-Laiz G, Moreira J, Giráldez I, Morales E, Fernández-Romero A, Florido M, Ros M. Assessing environmental pollution levels in marinas. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 762:144169. [PMID: 33360466 DOI: 10.1016/j.scitotenv.2020.144169] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/10/2020] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
Despite the growing interest in recreational boating and the increasing number of marinas along the world's coastlines, environmental knowledge of these ecosystems is still very scarce. Detailed data of pollutants in marinas are necessary to provide a global approach of environmental risks in the context of international management strategies. In the present study, a set of 64 variables (30 in seawater and 34 in sediments) were measured to compare marinas from the Southern Iberian Peninsula (SIP). Uni and multivariate analyses showed significant differences among marinas, evidencing the importance of management on a local scale. The most relevant variables determining these differences were turbidity and the biocide Irgarol 1051 in seawater, and granulometry, hydrocarbons and faecal coliforms in sediment. The use of normalization techniques with Al or Fe, and the suitability of different methodologies to measure Total Organic Matter in marinas were also discussed. Additionally, we perform a comprehensive literature review of worldwide marina stressors and develop a simple and straightforward method for assessing environmental quality. The method was tested using SIP marinas and was based on the comparison of 15 selected sediment stressors with background values, concentrations of worldwide sediment quality guidelines (SQGs), and reference conditions/security thresholds established by the programme of coastal waters in port areas (ROM 5.1). A global score was assigned using a new proposed index, Marinas Environmental Pollution Index (MEPI), ranging from 0 to 150 points according to the environmental quality (<90: bad, 90-120: moderate, >120: good). MEPI of marinas from SIP ranged from 60 to 110 points indicating bad or moderate levels of pollution. Environmental quality is one of the decisive factors for awarding eco-labels or eco-certifications, such as Blue Flags in marinas. Therefore, pollution baseline information and environmental tools are mandatory for correct assignation of these awards and necessary for assessing the efficiency of management actions.
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Affiliation(s)
- José M Guerra-García
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain.
| | - Carlos Navarro-Barranco
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain
| | - Gemma Martínez-Laiz
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain
| | - Juan Moreira
- Departamento de Biología (Unidad de Zoología) & Centro de Investigación en Biodiversidad y Cambio Goblal (CIBC-UAM), Universidad Autónoma de Madrid, Madrid, Spain
| | - Inmaculada Giráldez
- Dpto. Química "Prof. J.C. Vilchez Martín", Facultad de Ciencias Experimentales Research Center in Technology of Products and Chemical Processes, Pro(2)TecS Universidad de Huelva, Avda. Fuerzas Armadas, s/n, 21071 Huelva, Spain
| | - Emilio Morales
- Dpto. Química "Prof. J.C. Vilchez Martín", Facultad de Ciencias Experimentales Research Center in Technology of Products and Chemical Processes, Pro(2)TecS Universidad de Huelva, Avda. Fuerzas Armadas, s/n, 21071 Huelva, Spain
| | - Alejandro Fernández-Romero
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain
| | - Marta Florido
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain
| | - Macarena Ros
- Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Avenida Reina Mercedes 6, 41012 Seville, Spain
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Ota Y, Suzuki A, Yamaoka K, Nagao M, Tanaka Y, Irizuki T, Fujiwara O, Yoshioka K, Kawagata S, Kawano S, Nishimura O. Geochemical distribution of heavy metal elements and potential ecological risk assessment of Matsushima Bay sediments during 2012-2016. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 751:141825. [PMID: 32889476 DOI: 10.1016/j.scitotenv.2020.141825] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 08/15/2020] [Accepted: 08/18/2020] [Indexed: 06/11/2023]
Abstract
Heavy metal pollution of marine sediments has attracted a great deal of attention because of its persistence, bioaccumulation, and toxicity. To evaluate the effects of mega-tsunami, anthropogenic activities, and redox conditions on heavy metal accumulation in coastal areas, sediments from Matsushima Bay, Miyagi Prefecture, Japan, were sampled to test variations in heavy metal spatial distribution on the bay floor during 4 years following the 2011 Tohoku Earthquake tsunami. Cluster analysis and principal component analysis were performed to assess the influencing factors and potential sources of heavy metal enrichment in the sediments of the bay. Additionally, the sediment enrichment levels of heavy metals were assessed on the basis of the enrichment factor (EF). The results of multivariate statistical analyses showed that the Ti, Fe, V, Pb, and Zn contents in Matsushima Bay sediments, which were transported mainly from Sendai Bay, depended on the mud content. The value of EF < 2 for Fe, V, Pb, and Zn indicated that these elements were not enriched. The value of EF > 7 for Cu suggested that the contamination levels in western Matsushima Bay were moderate to severe in every sampling year from 2012 to 2016 by anthropogenic activities. From the values of EF > 5 for U and Mo during 2012 and 2014, the severe enrichment of both elements in these periods may be explained by contamination with 2011 tsunami deposits; the improvement in 2015-2016 suggests that there was recovery of the tsunami-affected sediment composition to its original state. The values of EF > 3 for Mn and As indicated moderate to severe contamination with these heavy metals in the bay mouth area during 2015. This was likely explained by more oxic bottom conditions in the mouth of Matsushima Bay during that year.
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Affiliation(s)
- Yuki Ota
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan.
| | - Atsushi Suzuki
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan
| | - Kyoko Yamaoka
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan
| | - Masayuki Nagao
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan
| | - Yuichiro Tanaka
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan
| | - Toshiaki Irizuki
- Institute of Environmental Systems Science, Academic Assembly, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan
| | - Osamu Fujiwara
- Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, Higashi 1-1-1, Tsukuba, Ibaraki 305-8567, Japan
| | - Kaoru Yoshioka
- Disaster Prevention and Crisis Management Department, Chiba Prefectural Government, 1-1 Ichiba-cho, Chuo-ku, Chiba, Chiba 260-8667, Japan
| | - Shungo Kawagata
- College of Education, Yokohama National University, 79-2 Tokiwadai, Hodogaya-ku, Yokohama, Kanagawa 240-8501, Japan
| | - Shigenori Kawano
- Tochigi Prefectural Museum, 2-2 Mutsumi-cho, Utsunomiya 320-0865, Japan
| | - Osamu Nishimura
- Department of Civil and Environmental Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan
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Geochemical Composition of the Lomé Lagoon Sediments, Togo: Seasonal and Spatial Variations of Major, Trace and Rare Earth Element Concentrations. WATER 2020. [DOI: 10.3390/w12113026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The concentrations of major, trace (TE), and rare earth (REE) elements and their seasonal and spatial distribution were studied on the fine fraction (<63 µm) of the sediments of the Lomé lagoons (West Lake, East Lake, and Lake Bè). The sediments were collected on a total of nine sampling sites (three per Lake) during two campaigns (dry season and rainy season). The quality of the sediments was assessed on the basis of the enrichment factor (EF) and the labile or non-residual fraction (NRF) in relation to the values recommended for the quality of the sediments (Sediment Quality Guidelines, SQG). The distribution of rare earth elements shows enrichments in light rare earths superior to those of heavy rare earth elements during any season. Positive Ce anomalies are less noticeable and less variable between seasons than Eu anomalies. La/Yb ratios are positively correlated with the percentage of Al and Fe oxides and with the percentage of fine fractions. The main bearing phases of rare earth elements are, therefore, Al and Fe oxides and the finest fractions of the sediments. The concentrations of trace elements vary little, according to the seasons, but show strong variations from one element to another. The degrees of enrichment obtained are moderate for Bi, Cr, Ga, Mo, Pb, Sn, and Zn (1.5 < EF < 5) to significant for As, Cd, and Sb (5 < EF < 20) for all sites of Lake Bè. For the sites of West Lake, the degrees of enrichment obtained are moderate for As, Cd, Cu, Mo, and Pb (1.5 < EF < 5) to a significance for As, Bi, Cd, Pb, Sb, Sn, and Zn (5 < EF < 20). Only the East Lake sites show high degrees of enrichment for elements such as Sb and Sn (20 < EF < 40). Trace elements (TE) such as As, Cd, Cu, and Ni have total concentrations within the range of variation of the SQG concentrations (particularly Probable Effect Level (PEL) and Effect Range Median (ERM)), whereas Cr, Pb, and Zn total concentrations are higher. The ranking of priority sites with respect to the sediment contamination is determined according to ERM and PEL quotients in relation to the probability of toxicity for benthic organisms. For almost all the sites, the priority is lowest to medium-low with regard to As, Cd, and Cu and medium-high (Cr and Ni) to highest (Pb and Zn), particularly for the East and West Lakes. Moreover, the NRF can represent significant percentages of the total TE concentrations: 5% to 15% for As, Bi, Ni, V, Mo, and Sc, 15% to 25% for Co, Cu, and Sr, 25% to 40% for Pb and Zn and, lastly, 47% to 55% for Cd.
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10
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Chaudhary M, Walker TR, Willis R, Oakes K. Baseline characterization of sediments and marine biota near industrial effluent discharge in Northumberland Strait, Nova Scotia, Canada. MARINE POLLUTION BULLETIN 2020; 157:111372. [PMID: 32658714 DOI: 10.1016/j.marpolbul.2020.111372] [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: 02/13/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 06/11/2023]
Abstract
A bleached kraft pulp mill operating in Nova Scotia, Canada has discharged effluent into a former tidal estuary known as Boat Harbour since 1967. After treatment in Boat Harbour, effluent is discharged into Northumberland Strait. Contaminated sediments in Boat Harbour are slated for remediation following cessation of effluent discharge. A review of historical documents to identify contaminants in marine biota in Northumberland Strait found insufficient data to properly assess baseline conditions prior to remediation. This study measured metal, methylmercury, dioxin and furan concentrations in surficial sediments and American lobster (Homarus americanus), rock crabs (Cancer irroratus) and blue mussels (Mytilus edulis) in Northumberland Strait. When compared to Canadian Council of Ministers of the Environment sediment quality guidelines and Canadian Food Inspection Agency tissue guidelines results indicated limited contamination in sediments and biota, posing low risk to marine biota. Long-term monitoring is recommended to verify effectiveness of remediation.
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Affiliation(s)
- Meenakshi Chaudhary
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada.
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Jonathan MP, Rodriguez-Espinosa PF, Sujitha SB, Shruti VC, Martinez-Tavera E. A multi-elemental approach to assess potential contamination in tourist beaches: The case of Loreto Bay (Marine Protected Area), NW Mexico. MARINE POLLUTION BULLETIN 2019; 146:729-740. [PMID: 31426215 DOI: 10.1016/j.marpolbul.2019.06.083] [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: 01/31/2019] [Revised: 06/22/2019] [Accepted: 06/30/2019] [Indexed: 05/12/2023]
Abstract
Metal/metalloid concentrations in water sediment and commercial fishes of Loreto Maritime National Park (MNP), Baja California Sur, Mexico were determined for a comprehensive geochemical study. In-situ physical characteristics (pH, conductivity, redox potential, dissolved oxygen, turbidity) of water clearly indicated the unique oceanographic properties of the Gulf of California. Likewise, the distribution pattern of metals/metalloid in water, sediments and fishes denoted the influences of local geology, longshore currents, upwelling process, natural hydrothermal vents and the 100-year old mining activities of Santa Rosalia region, situated to the north of Loreto. Calculated carcinogenic indices in commercial fish species showed safe human consumption. Thus, the present research validates a comprehensive geochemical study of protected areas upholding the need for continuous monitoring for a better conservation of coastal ecosystems.
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Affiliation(s)
- M P Jonathan
- Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de Junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P. 07340 Ciudad de Mexico, Mexico.
| | - P F Rodriguez-Espinosa
- Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD), Instituto Politécnico Nacional (IPN), Calle 30 de Junio de 1520, Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P. 07340 Ciudad de Mexico, Mexico
| | - S B Sujitha
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional (IPN), Av. Acueducto s/n, Col. Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P. 07340 Ciudad de Mexico, Mexico
| | - V C Shruti
- Centro Mexicano para la Producción más Limpia, Instituto Politécnico Nacional (IPN), Av. Acueducto s/n, Col. Barrio la Laguna Ticomán, Del. Gustavo A. Madero, C.P. 07340 Ciudad de Mexico, Mexico
| | - E Martinez-Tavera
- Universidad Popular Autónoma del Estado de Puebla (UPAEP), 17 sur no. 901, Barrio de Santiago, Puebla C.P. 72410, Puebla Mexico
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Zhang H, Walker TR, Davis E, Ma G. Ecological risk assessment of metals in small craft harbour sediments in Nova Scotia, Canada. MARINE POLLUTION BULLETIN 2019; 146:466-475. [PMID: 31426182 DOI: 10.1016/j.marpolbul.2019.06.068] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 06/26/2019] [Accepted: 06/27/2019] [Indexed: 06/10/2023]
Abstract
Ecological risk assessment of metals (As, Cd, Cr, Cu, Hg, Ni, Pb and Zn) in surface sediments from 31 small craft harbours (SCHs) in Nova Scotia, Canada was conducted using multiple risk assessment approaches. Approaches used were contamination factor, pollution load index, geoaccumulation index, potential ecological risk factor for individual metals, comprehensive potential ecological risk index, mean probable effect level quotient and mean effects range median quotient. Results indicated most SCHs exhibited low ecological risk from sediment metal concentrations, except for two harbours. Metal contamination was highest in Canso Harbour, followed by Clarks Harbour. SCH sediments were only slightly contaminated with low probability of pollution according to mean probable effect level and mean effects range median quotients. However, pollution load and geoaccumulation indexes indicated Cd and Hg had the highest metal contamination across SCH sediments. Cadmium and Hg had the highest potential ecological risk, respectively compared to other metals.
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Affiliation(s)
- Hongling Zhang
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada; Key Laboratory of Eco-remediation of Regional Polluted Environment, Ministry (Shenyang University), Shenyang 110044, People's Republic of China
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.
| | - Emily Davis
- School for Resource and Environmental Studies, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Guofeng Ma
- Key Laboratory of Eco-remediation of Regional Polluted Environment, Ministry (Shenyang University), Shenyang 110044, People's Republic of China
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Romo J, Chaudhary M, Walker TR. Baseline assessment of contaminants in marine biota prior to remediation of industrial effluent impacted sediments in a former tidal estuary in Nova Scotia, Canada. MARINE POLLUTION BULLETIN 2019; 145:641-648. [PMID: 31590833 DOI: 10.1016/j.marpolbul.2019.06.055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 06/04/2019] [Accepted: 06/19/2019] [Indexed: 06/10/2023]
Abstract
Contaminated sediments at a pulp mill and former chor-alkali effluent treatment facility in Nova Scotia, Canada will undergo remediation. However, baseline studies assessing contaminants in marine biota in the marine receiving environment are lacking. Historical qualitative and quantitative contaminant data in biota from Boat Harbour (a former tidal lagoon which was used to treat industrial effluent since 1967), and surrounding marine environment were reviewed to establish baseline pollution from industrial effluent and contaminated sediments. Elevated metal, dioxins and furan concentrations previously measured in marine biota needs updating to help inform pre-remediation monitoring. Selection of species, contaminants of concern and sampling locations were ad hoc and often inconsistent with environmental effects monitoring requirements under Canadian federal Pulp and Paper Effluent Regulations. These consolidated baseline data are required to determine historical impacts and to assist future monitoring during Boat Harbour sediment remediation to compare against.
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Affiliation(s)
- Jessica Romo
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada; GHD, Dartmouth, NS, Canada
| | - Meenakshi Chaudhary
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada
| | - Tony R Walker
- School for Resource and Environmental Studies, Dalhousie University, Halifax, NS, Canada.
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