title: Assessment of acid leachable trace metals in sediment cores from River Uppanar, Cuddalore, Southeast coast of India.
abstract: An acid leachable technique is employed in core samples (C1, C2 and C3) to develop a baseline data on the sediment quality for trace metals of River Uppanar, Cuddalore, southeast coast of India. Acid leachable metals (Fe, Mn, Cr, Cu, Ni, Co, Pb, Zn and Cd) indicate peak values at the sulphidic phase and enrichment of metals in the surface layers are due to the anthropogenic activities. Association of trace metals with Fe, Mn indicates their adsorption onto Fe-Mn oxyhydroxides and their correlation with S indicate that they are precipitated as metal sulphides. Factor analysis identified three possible types of geochemical associations and the supremacy of trace metals along with Fe, Mn, S and mud supports their geochemical associations. Factor analysis also signifies that anthropogenic activities have affected both the estuarine and fresh water regions of River Uppanar.
authors.affiliation: Department of Geology, School of Earth and Atmospheric Sciences, University of Madras, Guindy Campus, Chennai, India.
authors.forename: T
authors.initials: T
authors.lastname: Ayyamperumal
authors.forename: M P
authors.initials: MP
authors.lastname: Jonathan
authors.forename: S
authors.initials: S
authors.lastname: Srinivasalu
authors.forename: J S
authors.initials: JS
authors.lastname: Armstrong-Altrin
authors.forename: V
authors.initials: V
authors.lastname: Ram-Mohan
mesh_terms: D000327:Adsorption; D002104:Cadmium / Q000032:analysis; D002119:Calcium Carbonate / Q000032:analysis; D002244:Carbon / Q000032:analysis; D002857:Chromium / Q000032:analysis; D003035:Cobalt / Q000032:analysis; D003300:Copper / Q000032:analysis; D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry*; D055593:Geological Phenomena; D005844:Geology; D006863:Hydrogen-Ion Concentration; D007194:India; D007220:Industrial Waste; D007501:Iron / Q000032:analysis; D007854:Lead / Q000032:analysis; D008345:Manganese / Q000032:analysis; D009532:Nickel / Q000032:analysis; D010316:Particle Size; D045483:Rivers; D013455:Sulfur / Q000032:analysis; D014131:Trace Elements / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D015032:Zinc / Q000032:analysis
chemical_list: D007220:Industrial Waste; D014131:Trace Elements; D014874:Water Pollutants, Chemical; D002104:Cadmium; D002857:Chromium; D007854:Lead; D003035:Cobalt; D008345:Manganese; D013455:Sulfur; D002244:Carbon; D003300:Copper; D009532:Nickel; D007501:Iron; D002119:Calcium Carbonate; D015032:Zinc