Evaluation Of Trace Elements In Drinking Water For Human Health Risk Assessment

摘要

The concentrations of trace elements are measured in the drinking water from different sources and found that exposure status of general population varies depending upon the concentration profiles.Hence, the availablc literature on trace elements in drinking water is reviewed with the perspective of method of element analysis in drinking water with quality assurance, source, occurrence, pollution potential, toxicity, interaction, association with other tissues and remedial measures lor high levels of multi-elements and for finding the etiology of water element related health hazard.It is observed that the soluble form of trace element which influences exposure status is to be identified for specific element in the drinking water.The metal interaction between Zn and Cd showed a positivc and negative relationship, while additive effects between Se and F and antagonistic effects between Li and F were reported.Generally, it is found out that the trace elements are lower in drinking water than in food samples, because of biomagnifications.The trace element levels in drinking water are found correlated significantly with that of other biological samples such as hair, nail, blood and urine, thereby indicating that drinking water is the source of body store of trace elements.Generally, it is discerned that high levels of non-essential elements (Cd, Pb, Hg, As, F, etc;) and low levels of essential elements (Cr, Cu, Zn, Se, etc;) in the drinking water are the casual factors for human health hazards of endemic regions.