Geochemical distribution of trace metal pollutants

Authors: K M Mohiuddin H M Zakir K Otomo S Sharmin N Shikazono

Publish Date: 2009/12/01

Volume: 7, Issue: 1, Pages: 17-28

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Abstract

A study was conducted to investigate the trace metal pollution of water and sediments of downstream of Tsurumi River Yokohama Japan Twenty samples of water and sediments were collected from the river starting from Tokyo bay side up to the junction point of the Yagami River Results show that the mean concentrations of chromium cupper and nickel in water greatly exceed 100 times the surface water standard The concentration of molybdenum and lead was also higher than standard values while iron and manganese was lower than that of surface water standard The mean concentration of zinc cupper cadmium lead chromium vanadium bromine and iodine was 3811 1330 10 408 1029 1620 715 and 106 μg/g sediments respectively and was greatly exceed the average worldwide shale concentrations and average Japanese river sediment values However mean concentration of arsenic nickel and strontium was 110 366 and 1646 μg/g sediments respectively which was lower than the average shale value Other analyzed trace metals including barium zirconium rubidium yttrium tin antimony cesium lanthanum cerium praseodymium and neodymium were detected in river sediments the concentration of which was close to the Japan’s river sediment average values Pollution load index values of the sites of the studied area ranged from 124 to 765 which testify that the river sediments are polluted The PLI value of the area was however high 653 as the concentration of trace metals like zinc cupper cadmium lead and chromium were very high and were the major pollutants

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