Polymer phase transition characteristics coupled with GC-MS for the determination of phthalate esters
Polymer phase transition characteristics coupled with GC-MS for the determination of phthalate esters
复制标题
聚合物相变特性与 GC-MS 联用测定邻苯二甲酸酯
DOI：
10.1002/jssc.201900410
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发表时间：
2019
影响因子：
3.1
通讯作者：
Zhao Jingchan
中科院分区：
文献类型：
--
作者：
Chen Xiaomei;Xin Ladi;Xu Yidong;Liu Jie;Li Zhiqiang;Wang Yi;Zhao Jingchan
邻苯二甲酸酯容易从塑料材料中释放出来，迁移到土壤和水环境中，造成严重污染，对人类健康构成极大威胁。开发了一种新型温敏萃取剂与液-液微萃取相结合的方法，用于预富集水环境中的3种邻苯二甲酸酯。为了优化三种邻苯二甲酸酯的萃取效率，研究了各种参数，包括聚合物分子量、盐类型、盐添加量、吸附时间、解吸溶剂、解吸体积和解吸时间。在最佳条件下，检测限和定量限分别为0.007-0.120和0.021-0.350 µg/L。线性范围为5-1000 µg/L，相关系数为0.9867-0.9997。富集系数在25-75之间。3种邻苯二甲酸酯的相对回收率在82.2-105.6%之间。基于一式三份测量，相对标准偏差在0.7-9.2%范围内。结果表明，该温敏材料是水样中邻苯二甲酸酯的良好萃取剂。
Phthalate esters are easily released from plastics materials and migrate into the soil and water environment, causing serious pollution and posing a great threat to the health of human beings. A novel temperature‐sensitive extractant combined with liquid–liquid microextraction was developed to preconcentrate three phthalates in the water environment. To optimize the extraction efficiency for the three phthalate esters, various parameters, including polymer molecular weight, salt type, salt addition, adsorption time, desorption solvent, desorption volume, and desorption time have been studied. Under optimal conditions, limits of detection and limits of quantification were in the range of 0.007–0.120 and 0.021–0.350 µg/L, respectively. Linearities varied in the range of 5–1000 µg/L, with the correlation coefficients of 0.9867–0.9997. The preconcentration factors were in the range of 25–75. The relative recoveries of the three phthalate esters were in the range of 82.2–105.6% at the spiked levels. The relative standard deviations were in the range of 0.7–9.2% based on triplicate measurements. The results indicate that the temperature‐sensitive material is a good extractant for phthalate esters in water samples.