标准编号：ISO 17734-2:2013
中文名称：用液相色谱和质谱测定空气中的有机氮化合物 第2部分：用二丁胺和氯甲酸乙酯衍生物的胺与氨基异氰酸酯
英文名称：Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry — Part 2: Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives
发布日期：2013-12
标准范围
This part of ISO 17734 gives general guidance for the sampling and analysis of airborne amines and aminoisocyanates in workplace air. It is strongly recommended that the determination of amines and aminoisocyanates is made together with the determination of isocyanates in air, using DBA as a reagent(see ISO 17734-1).The method can be used for simultaneous determinations of amines, such as 4,4’-methylenediphenyldiamine (4,4’-MDA), 2,4- and 2,6-toluenediamine (2,4- and 2,6-TDA), and 1,6-hexamethylenediamine (1,6-HDA), and compounds containing both isocyanate and amine groups, such as 4,4’-methylenediphenyl aminoisocyanate (4,4’-MAI), 2,4-, 4,2-, and 2,6-toluene aminoisocyanate (2,4-, 4,2-, and 2,6-TAI), and 1,6-hexamethylene aminoisocyanate (1,6-HAI). The method is suitable for collecting amines and aminoisocyanates in both the gas and particle phases. The instrumental detection limit for the amines is about 5 nmol/sample and for the aminoisocyanate, it is about 0,3 nmol/sample. For a 15 l air sample, this corresponds to 0,4 ng?m–3 for TDA and 0,03 ng?m–3 for TAI.
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