Toxic Effects of Several Common Heavy Metals in Soils on Terrestrial Invertebrates

Abstract

In this paper, the ecotoxicology research method combines field investigation and indoor simulation experiment. Sampling and analysis of heavy metal pollution of solid soil samples from lead-acid battery factory, identified Pb, Cd and Cr as the pollution research objects, discussed the biological reaction mechanism of Eiseniafetida under the stress of heavy metals Pb, Cd and Cr, and obtained the results. The results of the lethal and sublethal effects of Pb, Cd and Cr on Pb, Cd and Cr and the effect of biomarkers. The main research results are as follows: In the acute toxicity test of Aisheng worm, the theoretical half-lethal concentrations (LC50) of single Pb, Cd, and Cr exposure for 14 days were 2620.93, 362.83, and 229.44 mg/kg, respectively, and their toxicity was Cr>Cd>Pb .