作者：张玉才1, 邓人攀2, 木合塔尔·吐尔洪1
作者单位：1. 喀什大学化学与环境科学学院, 新疆 喀什 844006;
2. 石河子大学化学化工学院 新疆兵团化工绿色过程重点实验室, 新疆 石河子 832003
关键词：气相色谱-质谱;PE保鲜膜;邻苯二甲酸酯类;超声萃取
摘要：
增塑剂中的邻苯二甲酸酯类严重影响人类的生命健康。该文以正己烷为萃取剂，采用超声萃取法提取PE保鲜膜中的邻苯二甲酸酯；利用气相色谱-质谱法/选择离子监测模式（GC-MS/SIM），测定PE保鲜膜中的4种邻苯二甲酸酯（DBP、BBP、DEHP、DNOP）的含量；建立气相色谱-质谱/离子选择法测定PE保鲜膜中邻苯二甲酸酯含量的分析方法。实验结果表明该方法在0.1～0.8 mg/L范围内具有良好的线性关系，检测限在0.20～0.60 mg/kg之间，加标水平为0.3 mg/L时的平均回收率为80.2%～104.8%，测定结果的相对标准偏差为1.76%～5.52%。该方法操作简便、准确性好、快速、灵敏，适于PE保鲜膜中4种邻苯二甲酸酯类含量的测定。
Determination of phthalate esters in PE plastic preservation film by GC-MS/SIM
ZHANG Yucai1, DENG Renpan2, MUHETAER Tuerhong1
1. College of Chemistry and Environmental Science, Kashgar University, Kashgar 844006, China;
2. Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
Abstract: Phthalates in plasticizers affect human life and health seriously. In this work, the phthalates in PE plastic preservation film was extracted by the way of ultrasonic extraction with n-hexane. The contents of four types of phthalates(DBP, BBP, DEHP, DNOP) in the PE preservation film were determined by gas chromatography-mass spectrometry/selective ion monitoring mode(GC-MS/SIM). A method for the determination of four types of phthalates(DBP, BBP, DEHP, DNOP) in PE preservation film by gas chromatography-mass spectrometry(GC-MS) was established. The experimental results showed a good linear relationship in the range of 0.1-0.8 mg/L, with the limit of detection ranged from 0.20 to 0.60 mg/kg. The average recoveries were 80.2%-104.8% under the spiked sample level of 0.3 mg/L, and the relative standard deviation was 1.76%-5.52%. The method was simple, accurate, rapid and sensitive, which was suitable for the determination of the four phthalate esters in PE cling film.
Keywords: GC-MS;PE plastic preservation film;phthalate esters;ultrasonic extraction
2017, 43(11): 37-41 收稿日期: 2017-05-19;收到修改稿日期: 2017-07-20
基金项目: 国家自然科学基金（21665013）
作者简介: 张玉才(1989-),男,甘肃兰州市人,讲师,硕士,主要从事有机功能材料的制备及性能研究。
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