GC-MS法测定合成革中乙二醇醚及其酯类残留量

Determination of Ethyleneglycol Monoalkyl Ethers and Esters in Synthetic Leather Products by Gas Chromatography-mass Spectrometry

建立了气相色谱-质谱法测定合成革制品中5种乙二醇醚及其酯类残留量的方法。以乙酸乙酯为萃取液,超声波提取样品中的待测组分,甲醇沉淀絮凝高聚物,气相色谱-质谱联用仪测定,质谱图及保留时间定性,外标法定量。线性范围在0. 1~10 mg/L线性良好,加标回收率为86. 6%~117. 2%,相对标准偏差(n=6)为3. 9~6. 9%,方法定量限0. 5~1. 0 mg/kg。该方法前处理简单,操作简便,灵敏度高、检测限低,可用于合成革制品中乙二醇醚及其酯类残留量的测定。

An analytical method was established for the determination of residual ethyleneglycol monoalkyl ethers and esters in synthetic leather products by gas chromatography-mass spectrometry. Samples were extracted by ultrasonic and using ethyl acetate as extraction solvent. The extracts were purified by using methonl as a flocculant. The analyte was detected by GC-MS and calibrated by external standard method. The standard curve was linear in the concentration range of 0. 1 ~ 10 mg/L,the recoveries varied from 86. 6% to 117. 2%,the relative standard deviations( RSDs) were no more than 7% and the LOQ was no higher than 1. 0 mg/kg. The method is simple,rapid and accurate with low limits of detection. It can be applied to the determination of ethylene glycol ethers and esters residues in synthetic leather products.