Contamination Status of Novel Organophosphate Esters Derived from Organophosphite Antioxidants in Soil and the Effects on Soil Bacterial Communities

• DOI: 10.1021/acs.est.3c10611
• Publication Date: 2024-05-21T17:27:21Z
• Authors: Meng Gao; Qiuyue Zhang; Shanxing Wu; Lina Wu; Peiyu Cao; Yaozhi Zhang; Lili Rong; Bo Fang; Chaolei Yuan; Yiming Yao; Yu Wang; Hongwen Sun
• Keywords: Soil; China; Bacteria; Soil Pollutants; Esters; Soil Microbiology; Organophosphates; Antioxidants

The contamination status of novel organophosphate esters (NOPEs) and their precursors organophosphite antioxidants (OPAs) hydroxylated/diester transformation products (OH-OPEs/di-OPEs) in soils across a large-scale area China were investigated. total concentrations the three test NOPEs soil 82.4–716 ng g–1, which considerably higher than those traditional OPEs (4.50–430 g–1), OPAs (n.d.–30.8 OH-OPEs (n.d.–0.49 di-OPEs (0.57–21.1 g–1). One NOPE compound, i.e., tris(2,4-di-tert-butylphenyl) phosphate (AO168 = O) contributed over 65% studied OPE-associated contaminants. A 30-day incubation experiment was performed to confirm influence AO168 O on bacterial communities. Specific genera belonging Proteobacteria, such as Lysobacter Ensifer, enriched O-contaminated soils. Moreover, ecological function methylotrophy observed be significantly enhanced (t-test, p < 0.01) treated with O, while nitrogen fixation inhibited 0.01). These findings comprehensively revealed contaminants environment provided first evidence effects microbial