Hydrophobicityand bioaccumulation potential of linear and cyclic polydimethylsiloxane (PDMS) oligomers were estimated by reversed-phase liquid chromatography and feeding experiments with guppies (Poecilia reticulata). PDMS concentrations in fish were determined by capillary column gas chromatography and gas chromatography-mass spectrometry. In contrast to polychlorinated biphenyls (PCBs), only very small amounts of PDMS were retained by the fish after six weeks feeding.
The interaction of chemicals with biological organisms is as old as life itself. Chemical pollution is usually considered to be human interference with natural chemical cycles and the release of man-made, unnatural compounds. The article traces five areas of chemical pollution and health hazards: air pollution, water pollution, occupational exposure, pollution from agricultural practices and contamination of food. It is suggested that historic perspective can aid in rational and prudent evaluation of present-day pollution problems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.