Bioaccumulation of Nonylphenol Isomer in Metaphir eguillelmi and Its Influence on Growth

A laboratory experiment was conducted using14C-tracer to investigate bioaccumulation of14C—p353—NP in Metaphire guillelmi and its influence on growth of the worm. Results show that after 96 days of exposure,the concentration of14C—p353—NP in Metaphire guillelmi was measured to be 4. 45 ~ 6. 79 mg·g~(-1)( wet weight) with BSAF being in the range of 0. 95~(-1). 89. In the14C—p353—NP-treated groups,earthworms exposed to14C—p353—NP,128、160 and 200mg·kg~(-1)in concentration were inhibited significantly in growth( P 0. 05). Bioaccumulation of14C—p353—NP in Metaphire guillelmi and its inhibitory effect on growth was closely related to concentration of14C—p353—NP in the soil and duration of the exposure and their interaction( P0. 001). It was found that14C—p353—NP might keep on accumulating in Metaphire guillelmi,and inhibiting its growth till it reached up to its sublethal concentration( ≤200 mg·kg~(-1)).The findings of the research may serve as basic data for assessment of bio-toxicity and ecological risk of p353—NP in soil.