摘要
用Ｔｅｎａｘ／吸附浓缩／气相色谱法分析大气中的ＴＤＩ，得到了一个Ｔｅｎａｘ适宜的吸附流量（０．５Ｌ／ｍｉｎ）和热脱附温度（２８０℃）；每克Ｔｅｎａｘ吸附ＴＤＩ的最小量为０．４１ｇ；每克Ｔｅｎａｘ吸附ＴＤＩ的最大量为４７４ｇ，方法的标准偏差为０．３８３％；变异系数为３．０１％；回收率为９８．２％。
TDI in the air workshop has been analyzed with the Tenax/Adsorption Concentration/Thermal Desorption/Gas Chromatography.The suitable adsorption flow of tenax is 0.5L/min and the appropriate thermal desorption temperature is 280℃。The minimum adsorption capacity of tenax is 0.41mg TDI/g tenax and the maximum is 474g TDI/g tenax.The relative standard deriation of the method is 0.38%;The coefficient of variation is 3.0% and the recovery rate is 98.2%.
出处
《分析测试技术与仪器》
CAS
1997年第3期162-167,共6页
Analysis and Testing Technology and Instruments
