content of heavy metals in lumbricus terrestris and associated soils in dump sites

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چکیده

metals concentrations in lumbricus terrestris and soil samples from the dumpsites located in zaria metropolis, nigeria were measured spectrophotometrically. mean metal content in dumpsite soils were: 25.95 - 75.17, 8.33 - 382.94, 124.84 - 206.96, 34.24 - 666.67 and 111.11 - 488.10mg/kg for cd, cu, mn, pb and zn respectively. while the concentration ranges recorded in l. terrestris samples were; cd, 0.55 - 8.13mg/kg; zn, 105.82 - 380.95mg/kg; cu, 0.66 to 10.25mg/kg; pb, 5.01 to 265.40mg/kg and mn, 1.26 to 10.23mg/kg respectively. the ratios of these metals accumulation in l. terrestris were less than unity for all metals except for zn. the order of bioaccumulation of the metals followed the trend; zn>pb>cu>cd = mn. since birds and domestic fowls fed on insects and l. terrestris, transfer of these metals across the food chain are most probable with resultant health problems.

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عنوان ژورنال:
international journal of environmental research

جلد ۳، شماره ۳، صفحات ۳۵۳-۳۵۸

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