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⁻¹ 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.

这项研究提出了一种分析废水处理厂污泥中10种邻苯二甲酸酯化合物的方法。通过邻苯二甲酸酯的标准混合物验证了GC-MS对目标化合物的分析效率。通过五点校准曲线，与各个内标有关的响应因子对单个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，已经开发了新一代邻苯二甲酸酯化合物，例如邻苯二甲酸二异壬酯，邻苯二甲酸二异癸酯（DiDP），以替代常规邻苯二甲酸酯。分析结果表明，PAEs的总浓度为7.4至138.6 mg kg ^-1dw在这七个分析的污泥样品中。更多的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）占污泥中PAE的99％以上。在七个污水处理厂处理的家庭和污水流量中，PAE的总浓度与DEHP，DiNP和DiDP的浓度之间具有显着的相关性。