Prolonged deposition of heavy metals in infiltration facilities and its possible threat to groundwater contamination

R.K. Aryal, M. Murakami, H. Furumai, F. Nakajima & H.K.P.K. Jinadasa
Field investigation of the infiltration facilities, built two decades ago in Tokyo, was carried out and sediment samples were collected from 12 infiltration inlets of three different locations. Heavy metals contents in the inlet sediment, road dusts and soils samples were analyzed and compared. The particle size distribution analysis showed its variation with depth as well as from inlet to inlet. The nature of organic substance present in sediment found changed with particle sizes as...
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