期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2013
卷号：2
期号：9
页码：4661
出版社：S&S Publications
摘要：The study focused on assessment of metal accumulation in certain aquatic macrophytes andbenthic organisms to be used as biomonitors. The macrophytes and benthic organisms collected during April toMay (2011) from river Cauvery, one of the main fresh water aquatic systems in the south of India. Microwavedigested samples of discrete organs of macrophytes and benthic organisms were analyzed for metal concentrationusing AAS-6300. In macrophytes, among the eight metals investigated, six (Fe, Pb, Ni, Cr, Cu, and Cd) wereshowed higher degree of accumulation in root whereas, remaining (Mn and Zn) in stem and leaf respectively.Vallesnaria spiralis showed greatest potency to acumulate Fe, Mn and Cu, while Nymphe stellata showed thebetter ability to accumulate Zn and Cr. Cd was found only in Aquatic neam and Vallisnaria spiralis atdownstream stations with very negligible concentration. Based on the accumulation level in macrophytes, theeight metals were arranged in the order of Fe> Mn> Zn> Cu> Pb> Cr> Ni > Cd. Among benthos, mollusca haveshowed a more accumulation capacity fallowed by crustacean and annelid. Bioaccumulation factor for benthoswere observed in the sequence of Cu>Mn>Zn>Ni>Fe>Cr>Pb>Cd.
