摘要
以液体甲硫醇合成固体甲硫醇铅,由固体甲硫醇铅酸解释放的甲硫醇配制标准气体。以5％NaOH为吸收液,采用多孔玻板吸收管,冷阱采样。5％OV—101/Chromosorb GHP为固定相,以气相色谱法测定大气中甲硫醇、甲硫醚及二甲二硫醚。其变异系数分别为8.6％,6.4％,5.5％;回收率分别为93.0％,97.7％,107.3％
Solid lead methyl mercaptan was synthesized from liquid methyl mercaptan, and the standard methyl mercaptan gas was prepared by acidizing lead methyl mercaptan. Used po- rous glass plate tube containing 5％ NaOH as absorbent in ice-cold trap for sampling. Then methyl mercaptan, methyl sulfoether and methyl disulfide were determined by Gas Chromatography, with 5％ OV-101/chromosorb GHP as immobile phase. The variation coefficients were 8.6％, 6.4％ and 5.5％, and recovery rates were 93.0％,97.7％ and 107.3％ respectively.
出处
《上海环境科学》
CAS
CSCD
1992年第6期24-26,43,共4页
Shanghai Environmental Sciences
关键词
甲硫醇
甲硫醚
二甲二硫醚
Methyl mercaptan Methyl sulfoether Methyl disulfide Gas chromatograph
