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EC number: 239-290-0
CAS number: 15245-44-0
Bioaccumulation/bioconcentration factors in soil: 0.39 kg/kg (dry weight)
Bioaccumulation factors (BAFs) for Pb from to soil to earthworms
are summarised in the voluntary risk assessment of lead, VRAL(LDAI,
2008). A median BAF for earthworms on a dry weight basis is 0.39 kgdw/kgdw (median
of 101 values) and 10-90thpercentiles are 0.13-1.17. On a
fresh tissue weight basis, BAF values are 0.10 kgdw/kgww(median)
and 0.03-0.27 (10-90thpercentiles). The influence of soil
properties on the BAF of earthworms (A. calluginosa) was studied
in different soils and the equation describing the BAF as a function of
pH reads, with BAF on a wet weight basis (kgdw/kgww)
(Ma, 1982). This equation predicts that the median BAF of the 101
data points above (BAF= 0.10 kgdw/kgww) is found
at pH=6.5. At pH 4.5, this BAF is 4-fold larger. There is no significant
effect of total soil Pb on the BAFs (LDAI, 2008).
A few literature data are available for bioaccumulation of Pb in
isopods from soil or litter, 14 BAFs were collected and listed
inTable12. Values range from 0.001-0.65 kgdw/kgdw.
A median BAF for isopods on a dry weight basis is 0.04 (median of 14
Bioaccumulation factors between soil or decomposed leaf litter and
isopods. The Pb concentrations in the biota are the product of BAF and
soil Pb concentration.
Soil/litter (mg Pb/kgdw)
15 adult specimen were exposed for 14 days to approximately 600 mL of air-dried experimental soil (polluted and remediated with 2.5, 10, 40 and 4 x 40 EDTA, respectively) in plastic vessels with plastic covers.
Udovic et al. 2009
polluted soil leached with 2.5 mmol kg-1EDTA
polluted soil leached with 10 mmol kg-1EDTA
polluted soil leached with 40 mmol kg-1EDTA
polluted soil leached with 4 x 40 mmol kg-1EDTA
Isopods were kept in plastic boxes on a moist gypsum base covered by decomposed leaf litter material, i.e. partly decomposed leaf litter material soaked in an aqueous solution of 100, 500 or 1000 mg l–1 Pb2+(as PbCl2).
Gräff et al. 1997
100 mg Pb/l
500 mg Pb/l
1000 mg Pb/l
Near a smelting complex a transect of 5 soil sampling sites was taken
0.3 km from the smelting complex
0.5 km from the smelting complex on the other side of the low hill
1 km from the smelting complex
2.5 km from the smelting complex
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