气相色谱-质谱法快速测定防火涂料中的苯系物  

Rapid Determination of Benzene Homologues in Fire Retardant Coatings by Gas Chromatography-Mass Spectrometry

作　　者：何林懋 刘志伟 李铭[2,3] 宁豪 王强 朱敏 HE Linmao;LIU Zhiwei;LI Ming;NING Hao;WANG Qiang;ZHU Min(Chengdu Institute of Product Quality Inspection Co.,Ltd.,Chengdu 610100,Sichuan,China;Sichuan Product Quality Supervision and Inspection Institute,Chengdu 610100,Sichuan,China;National Petroleum and Natural Gas Product Quality Supervision and Inspection Center,Chengdu 610100,Sichuan,China)

机构地区：[1]成都产品质量检验研究院有限责任公司,四川成都610100 [2]四川省产品质量监督检验检测院,四川成都610100 [3]国家石油天然气产品质量监督检验中心,四川成都610100

出　　处：《四川化工》2023年第4期28-32,48,共6页Sichuan Chemical Industry

基　　金：四川省市场监督管理局科技计划项目(SCSJ2021024)。

摘　　要：采用气相色谱-质谱法对防火涂料中的苯系物进行测定,考察了不同的色谱柱、萃取溶剂、萃取方法以及萃取温度对检测结果的影响,确定以甲醇作为萃取溶剂,经30℃超声提取(样品前处理),采用DB-WAX色谱柱分离,用质谱检测器定性、外标法定量,可实现防火涂料中苯系物的快速分析检测。研究试验表明,10种苯系物在1.0~60.0 mg/kg的浓度范围内,线性关系良好,检出限为0.1 mg/kg,苯系物的加标回收率在90.0%~108.0%,相对标准偏差在0.9%~7.8%之间,方法的准确度和精密度较高,适用于防火涂料中10种苯系物的同时测定。Gas chromatography-mass spectrometry was used to determine benzene series compounds in fireresistant coatings.The effects of different chromatographic columns,extraction solvents,extraction methods,and extraction temperatures on the detection results were investigated.Methanol was used as the extraction solvent,and ultrasonic extraction at 30℃(sample pre-treatment)was performed.DB-WAX chromatography column was used for separation,and mass spectrometry detector was used for qualitative analysis and external standard method for quantitative analysis of benzene series compounds in fire-resistant coatings.Rapid analysis and detection of benzene series compounds in fire-resistant coatings could be achieved.Research experiments have shown that there is a good linear relationship between the concentration range of 1.0~60.0 mg/kg for 10 benzene series compounds,with a detection limit of 0.1 mg/kg.The recovery rate of benzene series compounds is between 90.0%~108.0%,and the relative standard deviation is between 0.9%~7.8%.The method has high accuracy and precision,and is suitable for the simultaneous determination of 10 benzene series compounds in fireproof coatings.

关 键 词：建筑防火涂料 苯系物 气相色谱-质谱法 外标法 方法评价 

分 类 号：O657.63[理学—分析化学] TQ637[理学—化学]