Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China.
Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse, School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu, China; Guangdong Provincial Academy of Environmental Science, Guangdong Key Laboratory of Contaminated Sites Environmental Management and Remediation, Guangzhou 510045, China.
J Hazard Mater. 2022 Aug 15;436:129273. doi: 10.1016/j.jhazmat.2022.129273. Epub 2022 Jun 3.
Ninety-five soil samples (n = 95) were analyzed using an integrated suspect and non-target organophosphate ester (OPE) screening strategy. This suspect and non-target screening strategy allowed us to fully or tentatively identify 26 OPEs or OPE-like substances. Among these 26 newly identified contaminants, bisphenol A bis(diphenylphosphate) (BPABDP) exhibited the highest detection frequency of 83.2 %, with a concentration range of ND - 385 ng/g dry weight (dw). We also observed that BPABDP was significantly correlated with all other OPEs (p < 0.001 in all pairs), suggesting that BPABDP is widely used as a plasticizer and flame retardant in various commercial products. Another interesting finding was the discovery of four novel OPE structures with tentatively proposed chemical structures. Among these four non-target OPEs, (tert-butyl) phenyl bis(2,4-di-tert-butylphenyl) phosphate (TBPBDTBPP) shared a backbone structure very similar to that of the well-known OPE, tris(2,4-di-tert-butylphenyl) phosphate (TDTBPP). Detection frequency of this newly discovered OPE was high, up to 69.5 %, and it was significantly correlated with isodecyl diphenyl phosphate (IDDP), BPABDP, diphenyl 2-isopropylphenyl phosphate (2IPPDPP), and tricresyl phosphate (TCrP, p < 0.05 in all pairs), respectively. This study reported the most comprehensive suite of OPEs in soil samples, and 16 out of them were recognized in soil for the first time.
本研究采用综合可疑物和非靶向性有机磷酸酯（OPE）筛选策略，对 95 个土壤样本（n=95）进行了分析。该可疑物和非靶向性筛选策略使我们能够全面或暂定鉴定出 26 种 OPE 或类似 OPE 的物质。在这 26 种新鉴定的污染物中，双酚 A 双（二苯基磷酸酯）（BPABDP）的检出频率最高，为 83.2%，浓度范围为 ND-385ng/g 干重（dw）。我们还观察到 BPABDP 与所有其他 OPE 均呈显著相关（在所有对中均 p<0.001），表明 BPABDP 广泛用作各种商业产品的增塑剂和阻燃剂。另一个有趣的发现是发现了四种具有暂定化学结构的新型 OPE 结构。在这四种非靶向性 OPE 中，（叔丁基）苯基双（2,4-二叔丁基苯基）磷酸酯（TBPBDTBPP）与知名 OPE 三（2,4-二叔丁基苯基）磷酸酯（TDTBPP）具有非常相似的骨架结构。这种新发现的 OPE 的检出频率很高，高达 69.5%，与异癸基二苯基磷酸酯（IDDP）、BPABDP、二苯基 2-异丙基苯基磷酸酯（2IPPDPP）和三氯乙基磷酸酯（TCrP）呈显著相关（在所有对中均 p<0.05）。本研究报告了土壤样本中最全面的 OPE 套件，其中 16 种 OPE 是首次在土壤中被识别。
