Dong Cheng-Di, Wang Ming-Huang, Chen Chih-Feng, Shih Yu-Jen, Chang Ken-Lin, Lee Shu-Hui, Lin Yi-Li, Wu Chung-Hsin, Chen Chiu-Wen
Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan.
Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2020;55(10):1233-1240. doi: 10.1080/10934529.2020.1780850. Epub 2020 Jun 17.
This study proposed a method for analysis of 10 phthalate esters compounds from wastewater treatment plant sludges. The analytical efficiency of GC-MS for of target compounds was verified by a standard mixture of phthalate esters. The response factors related to the respective internal standards from a five-point calibration curve quantified the phthalate esters in individual compounds. Based on the literature compiled by environmental agencies, new generation phthalate compounds have been developed, such as di-iso-nonyl phthalate (DiNP), di-iso-decyl phthalate (DiDP), as alternative to conventional phthalates. The analytical results showed that the total PAEs concentration was in the range from 7.4 to 138.6 mg kg dw in these seven analyzed sludge samples. More, di-iso-nonyl phthalate (DiNP), di-iso-decyl phthalate (DiDP) and bis(2-ethylhexyl) phthalate (DEHP) contributed to over 99% of PAEs in the sludge. The correlation between total PAEs concentration in household and sewage flow treated at seven WWTPs and concentrations of DEHP, DiNP and DiDP was significant.
本研究提出了一种分析污水处理厂污泥中10种邻苯二甲酸酯类化合物的方法。通过邻苯二甲酸酯标准混合物验证了气相色谱-质谱联用仪（GC-MS）对目标化合物的分析效率。五点校准曲线中与各自内标相关的响应因子对各化合物中的邻苯二甲酸酯进行了定量。根据环境机构汇编的文献，已开发出新一代邻苯二甲酸酯化合物，如邻苯二甲酸二异壬酯（DiNP）、邻苯二甲酸二异癸酯（DiDP），作为传统邻苯二甲酸酯的替代品。分析结果表明，在这七个分析的污泥样品中，总邻苯二甲酸酯浓度范围为7.4至138.6 mg/kg干重。此外，邻苯二甲酸二异壬酯（DiNP）、邻苯二甲酸二异癸酯（DiDP）和邻苯二甲酸二（2-乙基己基）酯（DEHP）在污泥中的邻苯二甲酸酯总量中占比超过99%。七个污水处理厂处理的家庭污水流量中的总邻苯二甲酸酯浓度与DEHP、DiNP和DiDP浓度之间的相关性显著。
