Department of Environmental Sciences, University of California, Riverside, CA 92521, USA.
Department of Environmental Sciences, University of California, Riverside, CA 92521, USA; College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, China; Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China.
Environ Pollut. 2014 Oct;193:29-36. doi: 10.1016/j.envpol.2014.06.002. Epub 2014 Jul 2.
Pharmaceutical and personal care products (PPCPs) and endocrine disrupting chemicals (EDCs) enter the soil environment via irrigation with treated wastewater, groundwater recharge, and land application of biosolids. The transformation and fate of PPCP/EDCs in soil affects their potential for plant uptake and groundwater pollution. This study examined four PPCP/EDCs (bisphenol A, diclofenac, naproxen, and 4-nonylphenol) in soil by using (14)C-labeling and analyzing mineralization, extractable residue, bound residue, and formation of transformation products. At the end of 112 d of incubation, the majority of (14)C-naproxen and (14)C-diclofenac was mineralized to (14)CO2, while a majority of (14)C-bisphenol A and (14)Cnonylphenol was converted to bound residue. After 112 d, the estimated half-lives of the parent compounds were only 1.4-5.4 d. However a variety of transformation products were found and several for bisphenol A and diclofenac were identified, suggesting the need to consider degradation intermediates in soils impacted by PPCP/EDCs.
药品和个人护理产品（PPCPs）和内分泌干扰化学物质（EDCs）通过处理后的废水灌溉、地下水补给和生物固体的土地应用进入土壤环境。PPCP/EDC 在土壤中的转化和归宿影响其被植物吸收和地下水污染的潜力。本研究使用 14C 标记和分析矿化、可提取残留、结合残留和转化产物的形成，研究了土壤中的四种 PPCP/EDC（双酚 A、二氯芬酸、萘普生和 4-壬基酚）。在 112d 的培养结束时，大部分 14C-萘普生和 14C-二氯芬酸矿化为 14CO2，而大部分 14C-双酚 A 和 14C-壬基酚转化为结合残留。112d 后，母体化合物的估计半衰期仅为 1.4-5.4d。然而，发现了多种转化产物，并且鉴定出了几种双酚 A 和二氯芬酸的转化产物，这表明需要考虑受 PPCP/EDC 影响的土壤中的降解中间产物。
