气相色谱质谱法测定固废浸提液中21种半挥发性有机物  

Determination of 21 Semi-volatile Organic Compounds in Solid Waste Extract by Gas Chromatography Mass Spectrometry

作　　者：朱芹华 Zhu Qinhua(Shanghai Xinbodi Chemical Technology Service Co.,Ltd.,Shanghai 201908,China)

机构地区：[1]上海新泊地化工技术服务有限公司,上海201908

出　　处：《广东化工》2024年第13期134-137,共4页Guangdong Chemical Industry

摘　　要：建立了固体废物浸出液中21种半挥发性有机物的测定方法。以硝酸/硫酸混合溶液作为浸提剂,利用二氯甲烷溶剂提取固废浸出液中半挥发性有机物,浓缩后用气相色谱质谱法测定,选择离子扫描模式检测,外标法定量分析,对其检出浓度,加标回收率和精密度进行了研究。结果表明,不同浓度样品重复测定时,方法检出限为0.005 mg·kg^(-1)~0.037 mg·kg^(-1),相对标准偏差为0.60%~7.18%、1.52%~10.5%、0.39%~4.27%,加标回收率为66.1%~117.0%、72.2%~116.1%、74.3%~114.3%。方法稳定性好,灵敏度高,操作步骤简便,实用性强,自动化集成度高,可以满足固体废物浸出液中21种半挥发性有机物的同时测定。The determination methods of 21 semi-volatile organic compounds in solid waste leachate were established.Semi-volatile organic compounds in solid waste leachate were extracted by using dichloromethane solvent with experimental water,acetic acid buffer solution and nitric acid/sulfuric acid mixed solution as extractant,and after concentration,they were determined by gas chromatography mass spectrometry,ion scanning mode was selected,and external standard quantitative analysis was analyzed,and the detection concentration,spiked recovery rate and precision were studied.The results showed that when the samples of different concentrations were repeated,the detection limit was 0.005mg·kg^(-1)~0.037mg·kg^(-1),the relative standard deviation was 0.60%~7.18%,1.52%~10.5%,0.39%~4.27%,and the recovery rate of spiked was 66.1%~117.0%,72.2%~116.1%,74.3%~114.3%.The method has good stability,high sensitivity,simple operation steps,strong practicality and high degree of automation integration,which can meet the simultaneous determination of 21 semi-volatile organic compounds in solid waste leachate.

关 键 词：气相色谱质谱 固废 半挥发性有机物 

分 类 号：X83[环境科学与工程—环境工程]