Trace metal fractionation in water and sediments of an urban river stretch

Title
Trace metal fractionation in water and sediments of an urban river stretch
Authors
RAHUL KUMARRAHUL KUMAR
Keywords
water; river Yamuna; trace metal fractionation; risk assessment; sediments
Issue Date
2015-01
Publisher
SCIENCE REVIEWS 2000 LTD
Citation
CHEMICAL SPECIATION AND BIOAVAILABILITY, Page. 200-209
Abstract
In this study, the fractionation and ecotoxic potential of Cr, Ni, Cu and Pb in water and sediments of the river Yamuna (Delhi stretch) is presented. The river water is used for various purposes such as irrigation, industrial, domestic and drinking. The investigations suggest that the availability of metals in water follows the sequence Ni>Cr>Pb>Cu whereas a different pattern (Pb>Cu>Ni>Cr) is observed in sediments. Statistically significant spatial variations are indicated by two-way ANOVA in different geochemical forms of the metals and physicochemical parameters of water and sediments of the river Yamuna. Principal component analysis (PCA) suggests a similar source for all four metals probably from the sewage from municipal drains. PCA also indicates some independent sources of Cu and Pb. The hot spots were identified using hierarchical cluster analysis considering bioavailable forms of the metals in water and sediments as objects and the sampling sites as variables. Risk assessment code analysis indicates that metals generally pose medium to high risk at different sites. However, at a few locations either Ni or Pb cross the level of very high ecological risk.
URI
http://hdl.handle.net/20.500.11754/21463http://www.tandfonline.com/doi/abs/10.3184/095422914X14142369069568
ISSN
0954-2299
DOI
http://dx.doi.org/10.3184/095422914X14142369069568
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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