摘要
建立了气相色谱-质谱联用（GC-MS）测定纺织品中1,2-二氯乙烷的方法.样品经甲醇超声提取后,以TG-624（30 m＆#215;0.32 mm＆#215;1.8 μm）为色谱柱,采用气相色谱-质谱联用全扫描和选择离子扫描进行定性定量分析、外标法定量.结果表明：在0.05～30 mg/L范围内,1,2-二氯乙烷的线性关系良好,相关系数为0.999 3;方法检出限为0.50 mg/kg.在0.5、1.0、5.0 mg/kg 3个加标水平下,粘纤、聚酯、羊毛、锦纶、桑蚕丝、腈纶、棉7种纺织品基底的加标回收率为85.2％ ～ 101.4％,相对标准偏差（RSD）为4.0％～7.4％.该方法简便、准确,灵敏度和精密度高,适用于纺织品中1,2-二.氯乙烷的分析检测.
A gas chromatography - mass spectrometric （ GC - MS） method was developed for the de- termination of 1, 2-dichloroethane in textiles. The samples were extracted with methanol under ultra- sonic assistance. The separation and quantification of 1, 2-dichloroethane were achieved on an TG - 624 column （ 30 m x 0. 32 mm x 1.8 μm） using temperature programming. The identification and quantification of 1, 2-dichloroethane were performed by GC - MS under full scan and selected ion monitoring scan with the external standard method. The result indicated that the calibration curve showed a good linear relationship between peak area and concentration of 1, 2-dichloroethane in the range of 0.05 - 30 mg/L, with a correlation coefficient of 0. 999 3. The limit of detection was 0.50 mg/kg. The average recoveries of 1, 2-dichloroethane from 7 typical textile matrices including vis- cose fiber, polyester, wool, nylon, ramie, polyacrylonitrile fiber and cotton, at three spiked con- centration levels of 0. 5, 1.0, 5.0 mg/kg were in the range of 85.2% - 101.4% with relative stand- ard deviations （RSDs） of 4. 0% - 7.4%. With the advantages of low detection limit, good accuracy and high precision, the method could be used for residue surveillance of 1, 2-dichloroethane in tex- tile samples.
出处
《分析测试学报》
CAS
CSCD
北大核心
2014年第4期427-431,共5页
Journal of Instrumental Analysis
基金
国家质检总局科技计划项目(2012QK046)
