Influence of the geophagous earthworm Aporrectodea sp. on fate of bisphenol A and a branched 4-nonylphenol isomer in soil

The Science of the Total Environment
Jun ShanRong Ji

Abstract

Large amounts of endocrine disrupting chemicals (EDCs) including bisphenol A (BPA) and nonylphenol (NP) are released into the soil due to the application of biosolids. Earthworms are the predominant biomass in many terrestrial ecosystems and profoundly influence the physico-chemical and biological properties of soils. However, information about the effects of earthworm activities on the behaviors of EDCs in soil is still limited. Here, the effects of earthworms on mineralization, degradation, and bound residue formation of BPA and NP were investigated using the 14C tracer technique. The results showed that earthworms did not affect mineralization of BPA, but significantly inhibited bound residue formation of BPA and changed the size distribution of BPA residues within humic substances. Regarding NP, earthworms significantly inhibited mineralization and bound residue formation, and thus significantly promoted the degradation of NP and NP's metabolites in soil. After nine days of incubation, 75% and 46% of the initially applied 14C-BPA and 14C-NP were already present in bound residues, respectively, indicating that the major route of degradation of BPA and NP in soil was bound-residue formation. Among total 14C-BPA or 14C-NP resi...Continue Reading

Citations

Jul 13, 2021·Journal of Environmental Management·Ketelen Michele Guilherme de OliveiraDaniela Morais Leme

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