Isocyanates are harmful semi-volatile organic compounds that are emitted from various consumer products like polyurethane foam-based mattresses. Although it is a concern that isocyanates might accumulate in indoor dust, causing infants and toddlers, in particular, to be exposed to them, little information is available on the levels of isocyanates in the indoor environment. In this study, we investigated the suitability of an analytical method for determining the presence and level of isocyanates in the indoor dust. The method we developed displayed acceptable linearity, accuracy, and precision in the analysis of eleven different isocyanates. By using this analytical method, we could detect five isocyanates (ICA, MIC, EIC, PIC, and PHI) and quantify three isocyanates (MIC, EIC, and PHI) in indoor dust collected in different houses. This study is the first to focus on the pollution of indoor dust by isocyanates, and the tested method is suitable for the estimation of the level of isocyanate exposure.

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异氰酸酯是有害的半挥发性有机化合物，会从各种消费品（如聚氨酯泡沫床垫）中释放出来。尽管担心异氰酸酯可能积聚在室内灰尘中，尤其导致婴儿和幼儿接触它们，但有关室内环境中异氰酸酯含量的信息很少。在这项研究中，我们调查了一种确定室内灰尘中异氰酸酯含量和含量的分析方法的适用性。我们开发的方法在分析11种不同的异氰酸酯时显示出可接受的线性，准确性和精密度。通过使用这种分析方法，我们可以检测出五种异氰酸酯（ICA，MIC，EIC，PIC和PHI），并量化收集在不同房屋中的室内灰尘中的三种异氰酸酯（MIC，EIC和PHI）。

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