摘要
采用固体吸附剂对表面涂装废气样品进行富集,经热脱附后,采用气相色谱-质谱法测定表面涂装废气中36种挥发性有机物的含量。在气相色谱分离中采用SH-Rtx-624色谱柱,在质谱分析中采用全扫描模式。采用内标法定量,36种挥发性有机物的检出限(3S/N)为0.018~2.96ng。以空白样品为基体进行加标回收试验,所得回收率为84.5%~111%,测定值的相对标准偏差(n=6)为1.7%~14%。
The sample of surface coating exhaust gas was concentrated with sorbent adsorption.After thermal desorption,GC-MS was applied to the determination of 36 volatile organic compounds in surface coating exhaust gas.The SH-Rtx-624 chromatographic column was used for GC separation and the full scanning mode was adopted in MS determination.Internal standard method was used for quantitative.Detection limits(3 S/N)of the 36 volatile organic compounds were in the range of 0.018-2.96 ng.On the base of blank sample,test for recovery was made by standard addition method;values of recovery found were in the range of 84.5%-111%,with RSDs(n=6)of determined values in the range of 1.7%-14%.
作者
刘学敏
甘伟
查杨静
甘俊
乔磊
LIU Xuemin;GAN Wei;ZHA Yangjing;GAN Jun;QIAO Lei(Chongqing Huineng Biaopu Technology Co.,Ltd.,Chongqing 401121,China;Chongqing Tianhang Testing Technology Go.,Ltd.,Ghongqing 400000,China;Chongqing Yujiu Environmental Protection Industry Co.,Ltd.,Chongqing 401121,China;Chongqing Huiyuan Testing Technology Co.,Ltd.,Chongqing 401329,China)
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2019年第11期1297-1304,共8页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
