一次热解吸和二次热解吸-气相色谱法测定室内空气中苯系物方法比较  

Comparison of methods for determination of benzene series in indoor air by primary thermal desorption and secondary thermal desorption-GC

作　　者：顾妍丽[1] 陆阳 姚誉阳[1] GU Yan-li;LU Yang;YAO Yu-yang(Key Laboratory of Occupational Health of Jiangsu Province,Wuxi Center for Disease Control and Prevention,Wuxi 214023,China)

机构地区：[1]无锡市疾病预防控制中心江苏省职业卫生重点实验室,江苏无锡214023

出　　处：《化学工程师》2022年第10期27-30,34,共5页Chemical Engineer

基　　金：无锡市卫生健康委医学重点学科项目资助(LCZX2021006;CXTD2021004)。

摘　　要：本研究建立了二次热解吸-气相色谱法测定室内空气中苯系物的方法,并和一次热解吸-气相色谱法进行了全面对比。结果表明,二次热解吸-气相色谱法前处理简便、灵敏度高、准确度高、重复性好,具有明显优势。同时,本研究对国标方法进行优化,柱温由程序升温改为恒温,缩短了分析时间,并使基线更稳定,更适合于室内空气中苯系物的测定。In this study,a method for the determination of benzene series in indoor air by second thermal desorption-gas chromatography was established,and a comprehensive comparison was made with primary thermal desorption-gas chromatography.The result shows the secondary thermal desorption-gas chromatography method has simple pretreatment,high sensitivity,high accuracy,good repeatability,and has obvious advantages.At the same time,this study optimizes the national standard method.The column temperature is changed from programmed temperature to constant temperature,which shortens the analysis time and makes the baseline more stable,which is more suitable for the determination of benzene series in indoor air.

关 键 词：一次热解吸 二次热解吸 气相色谱法 室内空气 苯系物 

分 类 号：O657.7[理学—分析化学]