- Author : Michael Waters
- Release Date : 06 December 2012
- Publisher : Springer Science & Business Media
- Categories : Science
- Pages : 524 pages
- ISBN 13 : 9781468441215
- ISBN 10 : 1468441213
Synopsis : Short Term Bioassays in the Analysis of Complex Environmental Mixtures II written by Michael Waters, published by Springer Science & Business Media which was released on 06 December 2012. Download Short Term Bioassays in the Analysis of Complex Environmental Mixtures II Books now! Available in PDF, EPUB, Mobi Format. More than one hundred short-term bioassays are now available for detecting the toxicity, mutagenicity, and potential carcinogenicity of chemicals. These bioassays were developed and validated with individual compounds, and their principal application was perceived to be in evaluating the health hazard of such materials. However, man is rarely exposed to single chemicals; his exposure to hazardous chemicals is more commonly a multifactorial phenomenon. Although chemical analysis can be used to detect known hazardous compounds, it would be a staggering and expensive task to analyze large numbers of samples for all known or suspected hazardous constituents. Furthermore, the biological activity of a complex mixture cannot be reliably predicted from knowledge of its components. On the other hand, bioassays alone cannot tell us which components of complex mixtures are responsible for the biological activity detected. Thus, cost effectiveness and technical feasibility dictate stepwise and perhaps iterative application -of both chemical and biological methods in evaluating the health effects of complex environmental mixtures. Through the coupling of reliable biological detection systems with methods of chemical fractionation and analysis, it is frequently possible to isolate the individual chemical species that show biological activity. Initially, complex mixtures may be separated and bioassayed in carefully defined chemical fractions. The results of such short-term screening bioassays then may be used td guide the course of further fractionation and to determine the need for more stringent and comprehensive biological testing.