Perfluorinated compounds in surficial sediments of the Ganges River and adjacent Sundarban mangrove wetland, India (original) (raw)
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Environmental Pollution, 2010
Among various environmental media measured, water and biological samples showed relatively high degrees of PFC contamination with the existence of point sources mainly upstream of coastal areas in Korea. a b s t r a c t Soil, sediment, water, and biota collected from the western coast of Korea were analyzed to determine occurrence and sources of perfluorinated compounds (PFCs). PFCs were significantly concentrations of PFCs were measured in some water and biological samples, while concentrations of PFCs in soils and sediments were relatively low. The most widely detected compound was found to be perfluorooctanesulfonate (PFOS), with a maximum concentration in water of 450 ng/L and in fish of 612 ng/ g, dw. PFOS concentrations in water and biota were both less than those thought to cause toxicity. However, in both cases concentrations were within a factor of 10 of the toxicity threshold concentration. Concentrations of PFCs were significantly greater downstream than those upstream on the same river, suggesting point sources. Overall, the detection of PFCs at relatively great concentrations in various environmental matrixes from this region of Korea suggests that further studies characterizing PFCs and their potential risk to both humans and wildlife are needed.
Pollution Research, 2022
Recent advancement in water quality assessment and remediation technologies has led to the identification of trace amounts of emerging contaminants of anthropogenic origin. The presence and toxicity of these compounds in each environmental niche (i.e. air, water, soil) has been identified as a major health concern throughout the world. Perfluoroalkyl and polyfluoroalkyl substances (PFASs) have been identified as one such class of ubiquitous, non-degradable, persistent organic pollutants (Kaboré et al., 2018). However, till date, India has no environmental quality standards and specific guidelines for the management of these compounds. Only limited studies on presence and toxic impact of these persistent organic pollutants have been carried out in India. There is an urgent need to conduct extensive and comprehensive studies for the detection of these emerging pollutants in the various environmental and biological matrices. This review paper summarizes the currently available literature on occurrence, distribution of Perfluoroalkyl and polyfluoroalkyl substances (PFASs) in India.
Perfluorinated Surfactants in Surface and Drinking Waters (9 pp)
Environmental Science and Pollution Research - International, 2006
Perfluorinated surfactants could be detected in some suchlike soil samples. They contaminated the river and the reservoir belonging to it, likely by superficial run-off over several months or probably years. Downstream, dilution effects are held responsible for decreasing concentrations of PS in surface waters of the Moehne and the Ruhr river. In analogy to the surface water samples, PS (major component PFOA) can be determined in many drinking water samples of the Rhine-Ruhr area where the water supplies are mainly based on bank filtration and artificial recharge.