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Nkosi SM, Thembane N. Physical, chemical and biological characteristics of clays from Durban (South Africa) for applications in cosmetics. ANALYTICAL SCIENCE ADVANCES 2024; 5:2300062. [PMID: 38827024 PMCID: PMC11142390 DOI: 10.1002/ansa.202300062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 06/04/2024]
Abstract
Clay soils are rock-decomposed materials comprised of both clay- and non-clay-like minerals. Clays' physiochemical and mineralogical composition determines their applicability use in cosmetics. Because of their high bioburden, they must be effectively characterized before being incorporated into cosmetics. The scope of the current study was to characterize two different samples of red and white clays for their physical, chemical and biological properties; mined from Durban, South Africa. Characterization was performed using techniques like X-ray fluorescence, X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscope, hydrogen potential, soil colour, oil absorption, swelling capacity, texture, bulk density, plastic and apparent viscosity, sun protection factor and microbiological analysis.
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Affiliation(s)
- S'busiso M Nkosi
- Technology Station in ChemicalsMangosuthu University of TechnologyUmlaziSouth Africa
| | - Nokukhanya Thembane
- Department of Biomedical SciencesMangosuthu University of TechnologyUmlaziSouth Africa
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Wollin KM, Batke M, Damm G, Freyberger A, Gundert-Remy U, Mangerich A, Hengstler JG, Partosch F, Schupp T, Sonnenburg A, Foth H. PFASs-restriction proposal commentary on ECHA's Annex XV restriction report, proposal for a restriction, March 2023. Arch Toxicol 2023; 97:3305-3312. [PMID: 37801158 DOI: 10.1007/s00204-023-03597-y] [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: 08/24/2023] [Accepted: 08/29/2023] [Indexed: 10/07/2023]
Abstract
PFASs are defined as substances that contain at least one fully fluorinated methyl (CF3-) or methylene (-CF2-) carbon atom. The excellent technical properties of members of the PFAS group have led to their use in a wide range of applications. The substance group comprises more than 10,000 individual compounds. A variety of adverse effects has been described for single substances. For the majority of the PFASs, neither toxicokinetic data nor effect data is available. Hence, because of the small number of PFASs for which a full toxicological profile is available, grouping based on the existing data is not feasible. A critical problem of PFASs and their degradation products is the very high persistence, which clearly fulfils the criterion for the substance property Very Persistent (vP) according to Annex XIII of the REACH Regulation. Because of this property the European Commission is planning to take action. Defining suitable subgroups appears to be a scientifically based approach. However, to reach this goal, large data gaps would have to be closed which would take up to centuries, a time-frame, which is not defendable with respect to potential irreversible harm. Because of the time pressure resulting from the potential irreversible harm, the precautionary principle has been selected as an appropriate tool to handle PFASs and in the restriction proposal PFASs are treated as one group. This approach is justified in the view of the advisory committee of the German Society for Toxicology. ECHA's proposal received a lot of attention in the public. However, communication so far has obviously led to the misunderstanding of a proven health hazard for all PFASs. Communication should explain the justification of the broad inclusion of substances as being based on the precautionary principle. Data gaps versus current knowledge need to be clearly communicated; communication should also include the possibility for derogation of essential use. It should address the issue of suitable substitutes to avoid unintended health consequences; and it should mention that existing persistent environmental contamination calls for developing innovation in remediation techniques.
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Affiliation(s)
| | - Monika Batke
- University of Applied Sciences Hochschule Emden/Leer, Emden, Germany
| | - Georg Damm
- Department of Hepatobiliary Surgery and Visceral Transplantation, University Hospital, Leipzig University, Leipzig, Germany
| | - Alexius Freyberger
- Research and Development, Translational Sciences-Toxicology, Bayer AG, Wuppertal, Germany
| | | | - Aswin Mangerich
- Institute of Nutritional Science, University of Potsdam, Potsdam, Germany
| | - Jan G Hengstler
- Leibniz Research Centre for Working Environment and Human Factors (IfADo), University of Dortmund, Dortmund, Germany
| | | | - Thomas Schupp
- Chemical Engineering, University of Applied Sciences Muenster, Steinfurt, Germany
| | - Anna Sonnenburg
- Department Pesticides Safety, German Federal Institute for Risk Assessment, Max-Dohrn-Str. 8-10, 10589, Berlin, Germany
| | - Heidi Foth
- Foth: Institute of Environmental Toxicology, University of Halle, Halle/Saale, Germany
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Turdiyeva K, Lee W. Comparative analysis and human health risk assessment of contamination with heavy metals of Central Asian rivers. Heliyon 2023; 9:e17112. [PMID: 37484346 PMCID: PMC10361320 DOI: 10.1016/j.heliyon.2023.e17112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 07/25/2023] Open
Abstract
The study focuses on heavy metals contamination, drinking water quality, and associated health risks for adults and children by consuming water from Central Asian Rivers (Syr-Darya, Nura, and Ili Rivers). Water samples were collected from three rivers within the 2014-2019 period by the RMS "Kazhydromet" and analyzed for various physicochemical parameters. The study revealed that the concentrations of Fe, Cd, Cr (VI), Hg, Mn, and As significantly exceeded local and international drinking water standards in at least one water body. The lowest total water quality index (55.1%) was observed in the Nura River ("marginal water category"). Coal, soil, non-ferrous metals, and iron ore industries were found to be the major sources of heavy metals in the regions. Deterministic risk assessment revealed serious cancer risks (>1E-5) in rivers due to As and Cr (VI) exposure by oral and dermal contact for adults and children. Stochastic risk assessment confirmed high cancer risks (>1E-4) due to Cr (VI) contamination of the Syr-Darya River. The study results indicate the serious lifetime cancer risk to the residents due to the use of river water for drinking and household activities. Therefore, the study area urgently and continuously requires heavy metal removal, effective monitoring, and good quality drinking water supply.
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Affiliation(s)
- Karina Turdiyeva
- Department of Chemical and Materials Engineering, Nazarbayev University, Astana 010000, Kazakhstan
| | - Woojin Lee
- Department of Civil and Environmental Engineering, Environmental Systems Lab., National Laboratory Astana, Nazarbayev University, Astana 010000, Kazakhstan
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Saran A, Fernandez L, Latini CY, Reinhard MB, Minig M, Thijs S, Vangronsveld J, Merini LJ. Phytomanagement of a Lead-Polluted Shooting Range Using an Aromatic Plant Species and Its Effects on the Rhizosphere Bacterial Diversity and Essential Oil Production. PLANTS (BASEL, SWITZERLAND) 2022; 11:3024. [PMID: 36432757 PMCID: PMC9696282 DOI: 10.3390/plants11223024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Revised: 11/03/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
This field study aimed to assess the baseline conditions of a long-term shooting range in Argentina polluted with 428 mg kg-1 lead (Pb) to evaluate the establishment and development of Helianthus petiolaris plants and address the efficacy of the phytomanagement strategy through: (i) element accumulation in plant tissues; (ii) rhizosphere bacterial diversity changes by Illumina Miseq™, and (iii) floral water and essential oil yield, composition, and element concentration by GC-MS and ICP. After one life cycle growing in the polluted sites, in the roots of Helianthus petiolaris plants, Pb concentration was between 195 and 304 mg kg-1 Pb. Only a limited fraction of the Pb was translocated to the aerial parts. The predominance of the genus Serratia in the rhizosphere of Helianthus petiolaris plants cultivated in the polluted sites and the decrease in the essential oil yield were some effects significantly associated with soil Pb concentration. No detectable Pb concentration was found in the floral water and essential oil obtained. Extractable Pb concentration in the soil reduced between 28% and 45% after the harvest.
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Affiliation(s)
- Anabel Saran
- Scientific Research Agency, CONICET, Santa Rosa L6300, La Pampa, Argentina
| | | | | | | | - Marisol Minig
- Department of Chemistry, National University of La Pampa, Santa Rosa L6300, La Pampa, Argentina
| | - Sofie Thijs
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
| | - Jaco Vangronsveld
- Environmental Biology, Centre for Environmental Sciences, Hasselt University, Agoralaan Building D, 3590 Diepenbeek, Belgium
- Department of Plant Physiology and Biophysics, Faculty of Biology and Biotechnology, Maria Curie Sklodowska University, Akademicka, 19, 20-400 Lublin, Poland
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Christou A, Hadjisterkotis E, Dalias P, Demetriou E, Christofidou M, Kozakou S, Michael N, Charalambous C, Hatzigeorgiou M, Christou E, Stefani D, Christoforou E, Neocleous D. Lead contamination of soils, sediments, and vegetation in a shooting range and adjacent terrestrial and aquatic ecosystems: A holistic approach for evaluating potential risks. CHEMOSPHERE 2022; 292:133424. [PMID: 34974047 DOI: 10.1016/j.chemosphere.2021.133424] [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: 11/12/2021] [Revised: 12/22/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
It is well accepted that shooting ranges constitute hotspots of Pb contamination. This study evaluated the degree of Pb contamination of soils, sediments and vegetation within the boundaries of a highly visited shooting range, as well as the fluvial transport and dispersal of Pb, and therefore the contamination of adjacent river and water reservoir. Soils in the shooting range were severely contaminated with Pb, as indicated by the values of enrichment and contamination factor. The concentration of Pb in these soils ranged from 791 mg kg-1 to 7265 mg kg-1, being several dozens or even hundreds of times higher compared with control background samples. A temporary stream being in close proximity was also polluted, though to a much lesser extent. The degree of Pb contamination was negatively correlated with the distance from the shooting range. To this effect, the degree of contamination of the river and the water reservoir being in the vicinity of the shooting range was negligible, as sediments and water samples preserved similar Pb concentrations with control samples. However, cultivated (olives) and wild native plant species grown in the area of the shooting range were found to uptake and accumulate high concentrations of Pb in their tissues (even 50 times higher compared with control samples). The severe contamination of soils, sediments and vegetation in the studied shooting range can provoke very high ecological risks. Overall, results suggest that management measures should be undertaken within the boundaries of the studied shooting range.
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Affiliation(s)
- Anastasis Christou
- Agricultural Research Institute, Ministry of Agriculture, Rural Development and Environment, P.O. Box 22016, 1516, Nicosia, Cyprus.
| | - Eleftherios Hadjisterkotis
- Agricultural Research Institute, Ministry of Agriculture, Rural Development and Environment, P.O. Box 22016, 1516, Nicosia, Cyprus
| | - Panagiotis Dalias
- Agricultural Research Institute, Ministry of Agriculture, Rural Development and Environment, P.O. Box 22016, 1516, Nicosia, Cyprus
| | - Eleni Demetriou
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | - Maria Christofidou
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | - Sofia Kozakou
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | - Nicos Michael
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | | | | | - Eftychia Christou
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | - Demetris Stefani
- State General Laboratory, Ministry of Health, P.O. Box 28648, 2081, Nicosia, Cyprus
| | | | - Damianos Neocleous
- Agricultural Research Institute, Ministry of Agriculture, Rural Development and Environment, P.O. Box 22016, 1516, Nicosia, Cyprus
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Shi J, Xu Q, Zhou Z, Wu X, Tong J, Cai Q, Wu Q, Shi J. Controlling Factors and Prediction of Lead Uptake and Accumulation in Various Soil-Pepper Systems. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2021; 40:1443-1451. [PMID: 33502760 DOI: 10.1002/etc.4997] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 11/24/2020] [Accepted: 01/24/2021] [Indexed: 06/12/2023]
Abstract
Lead (Pb) is a typical toxic heavy metal element in soils and plants, which has a potential threat to human health through the food chain. Uptake of Pb in the soil-vegetable system has attracted broad attention, whereas reports on the main controlling factors of Pb uptake and accumulation in different soil-vegetable systems are limited. The effect of soil properties on Pb uptake and accumulation in pepper (Capsicum annuum L.) was studied by a pot experiment with 16 typical soils in China. The results showed that the Pb bioavailability was lower in alkaline soils, and that soil cation exchange capacity (CEC), CaCO3 , and total phosphorus contents might influence the uptake and transfer of Pb by peppers. Soil pH and CEC were the most significant factors affecting Pb accumulation in pepper fruits. Soil pH was negatively correlated with Pb uptake and accumulation due to its influence on Pb mobility and bioavailability. The accumulation of Pb decreased as soil CEC increased, which might inhibit the absorption and transfer of Pb in peppers. The multiple linear regression function based on soil Pb content, pH, and CEC could provide enough information for a good prediction of the accumulation of Pb in soil-pepper systems (R2 = 0.733). The results are in favor of developing a Pb threshold for vegetables in agricultural soils in China, thus improving the food safety of crops. Environ Toxicol Chem 2021;40:1443-1451. © 2021 SETAC.
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Affiliation(s)
- Jingxuan Shi
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Qiao Xu
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Zhen Zhou
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Xiaoshuai Wu
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Jianhao Tong
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Qiongyao Cai
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- Shanghai Environment Education Center, Shanghai, China
| | - Qianhua Wu
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
| | - Jiyan Shi
- Department of Environmental Engineering, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
- MOE Key Laboratory of Environmental Remediation and Ecological Health, College of Environmental and Resource Science, Zhejiang University, Hangzhou, China
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