摘要
本文选用涂有硫酸的硅胶采集空气中偏二甲肼，经水解吸，糠醛衍生，乙酸乙酯萃取后进行色相色谱测定，该法采样效率高，样品稳定时间长，室温下放置七天未发生丢失，水对偏二甲肼的解吸效率大于90％， 气相色谱测定偏二甲肼的最低检出浓度为0．08mg/m2。
Sulfuric acid-coated silica gel is selected to trap 1,1-dimethylhydrazine in air. The sorbent is treated with distilled water to desorb the compound.Reagent containing sodium acetate and 2-furaldehyde is added and the resulting derivative is extracted into ethyl actate and analyzed by GC. Results showed that the collection efficiency is high. No loss has been observed during storage for 7 days at ordinary room temperatures. The desorption efficiency is above 90% and the minimum detectable concentration is 0.08 mg/m^3
出处
《卫生研究》
CAS
CSCD
北大核心
1991年第6期10-13,共4页
Journal of Hygiene Research
关键词
硅胶管
气相色谱法
偏二甲肼
空气
测定
silica gel tube
gas chromatography
1,1-dimethylhydrazine
