Validation of transferability of DBA derivatization and LC-MS/MS determination method for isocyanates via an interlaboratory comparison.
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Publication date
2008-11
Authors
Bobeldijk, I.
Karlsson, D.
Lai, Chen-Li
Gonsalves, J.
Hekman, M.
van de Lagemaat, D.
Preller, L.
Heederik, Dick
Skarping, G.
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Document Type
Article
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Abstract
An adapted method for the quantitative determination of isocyanates in air was implemented and validated in-house. The method was based on air sampling using an impinger flask containing di-n-butylamine (DBA) in toluene and a glass fibre filter in series. The DBA derivatives were determined using liquid chromatography and tandem mass spectrometry. Studied isocyanates were isophorone diisocyanate, isocyanic acid (ICA), methyl isocyanate, ethyl isocyanate, propyl isocyanate, hexamethylene diisocyanate (HDI), 2,6- and 2,4-toluene diisocyanate, 4,4'-methylene diphenyl diisocyanate (MDI), phenyl isocyanate (PhI), MDI oligomers and different HDI adducts. Monitoring of selected reactions resulted in quantifications with correlation coefficients >0.995, within-batch relative standard deviation (RSD) of repeatability was 500 samples.
Keywords
interlaboratory method comparison, isocyanates, liquid chromatography mass spectrometry, DBA, Coronacrisis-Taverne
Citation
Bobeldijk, I, Karlsson, D, Pronk, A, Gonsalves, J, Hekman, M, van de Lagemaat, D, Preller, L, Heederik, D & Skarping, G 2008, 'Validation of transferability of DBA derivatization and LC-MS/MS determination method for isocyanates via an interlaboratory comparison.', Annals of Occupational Hygiene, vol. 52, no. 8, pp. 757-763. https://doi.org/10.1093/annhyg/men057