ISO 17734-1:20 13为工作场所空气中异氰酸酯的采样和分析提供了一般指南。当怀疑排放胺和氨基异氰酸酯时（例如PUR的热降解），建议除异氰酸酯外，还使用DBA和氯甲酸乙酯作为试剂测定空气中的胺和氨基异氰酸酯（参见ISO 17734-2）。 该方法适用于测定气相和颗粒相中多种不同的异氰酸酯。可以测定的典型单官能异氰酸酯是异氰酸(ICA)、异氰酸甲酯(MIC)、异氰酸乙酯(EIC)、异氰酸丙酯(PIC)、异氰酸丁酯(BIC)和异氰酸苯酯(PhI)。典型的单体二异氰酸酯包括1，6-六亚甲基二异氰酸酯(HDI)、2，4-和2,6-甲苯二异氰酸酯(TDI)、4,4'-亚甲基二苯基二异氰酸酯(MDI)、1,5-萘基二异氰酸酯(NDI)、异佛尔酮二异氰酸酯(IPDI)和4,4'-二环己基甲烷二异氰酸酯(HMDI)。可以测定的多官能异氰酸酯通常是聚合MDI、缩二脲-、异氰脲酸酯-和脲基甲酸酯-加合物中的低聚物，以及异氰酸酯的预聚物形式。 脂肪族异氰酸酯的仪器检测限为约5nmol/样品，芳香族异氰酸酯的仪器检测限为约0.2 nmol/样品。对于15升空气样本，这相当于0.6纳克？m？HDI为3，0.02 ng？m？TDI为3。 对于5 l空气样品，该方法的有用范围约为0,001 μ g？m？3到200毫克？m？TDI为3。

ISO 17734-1:2013 gives general guidance for the sampling and analysis of airborne isocyanates in workplace air. When amines and aminoisocyanates are suspected to be emitted (e.g. from thermal degradation of PUR), it is recommended that, in addition to isocyanates, the amines and aminoisocyanates in the air are determined, using DBA and ethyl chloroformate as reagents (see ISO 17734-2). The method is suitable for the determination of a wide range of different isocyanates in both the gas and particle phases. Typical monofunctional isocyanates that can be determined are isocyanic acid (ICA), methyl isocyanate (MIC), ethyl isocyanate (EIC), propyl isocyanate (PIC), butyl isocyanate (BIC), and phenyl isocyanate (PhI). Typical monomeric diisocyanates include 1,6-hexamethylene diisocyanate (HDI), 2,4- and 2,6-toluene diisocyanate (TDI), 4,4'-methylenediphenyl diisocyanate (MDI), 1,5-naphthyl diisocyanate (NDI), isophorone diisocyanate (IPDI), and 4,4'-dicyclohexylmethane diisocyanate (HMDI). Multifunctional isocyanates that can be determined are typically oligomers in polymeric MDI, biuret-, isocyanurate-, and allophanate-adducts, and prepolymeric forms of isocyanates. The instrumental detection limit for aliphatic isocyanates is about 5 nmol/sample and for aromatic isocyanates, it is about 0,2 nmol/sample. For a 15 l air sample, this corresponds to 0,6 ng？m^?3 for HDI and 0,02 ng？m^?3 for TDI. The useful range, for a 5 l air sample, of the method is approximately 0,001 μg？m^?3 to 200 mg？m^?3 for TDI.