有机磷
环境化学
污染
土壤污染
化学
环境科学
杀虫剂
生物
农学
生态学
作者
Meng Gao,Qiuyue Zhang,Sinan Wu,Lina Wu,Peiyu Cao,Yaozhi Zhang,Lili Rong,Bo Fang,Chaolei Yuan,Yiming Yao,Yu Wang,Hongwen Sun
标识
DOI:10.1021/acs.est.3c10611
摘要
The contamination status of novel organophosphate esters (NOPEs) and their precursors organophosphite antioxidants (OPAs) and hydroxylated/diester transformation products (OH-OPEs/di-OPEs) in soils across a large-scale area in China were investigated. The total concentrations of the three test NOPEs in soil were 82.4–716 ng g–1, which were considerably higher than those of traditional OPEs (4.50–430 ng g–1), OPAs (n.d.–30.8 ng g–1), OH-OPEs (n.d.–0.49 ng g–1), and di-OPEs (0.57–21.1 ng g–1). One NOPE compound, i.e., tris(2,4-di-tert-butylphenyl) phosphate (AO168 = O) contributed over 65% of the concentrations of the studied OPE-associated contaminants. A 30-day soil incubation experiment was performed to confirm the influence of AO168 = O on soil bacterial communities. Specific genera belonging to Proteobacteria, such as Lysobacter and Ensifer, were enriched in AO168 = O-contaminated soils. Moreover, the ecological function of methylotrophy was observed to be significantly enhanced (t-test, p < 0.01) in soil treated with AO168 = O, while nitrogen fixation was significantly inhibited (t-test, p < 0.01). These findings comprehensively revealed the contamination status of OPE-associated contaminants in the soil environment and provided the first evidence of the effects of NOPEs on soil microbial communities.
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