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  • BSI
    BS ISO 17734-1:2013 Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Isocyanates using dibutylamine derivatives
    Edition: 2013
    $442.60
    / user per year

Description of BS ISO 17734-1:2013 2013

This part of ISO 17734 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.



Standard NumberBS ISO 17734-1:2013
TitleDetermination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Isocyanates using dibutylamine derivatives
StatusRevision Underway
Publication Date2013-12-31
ReplacesBS ISO 17734-1:2006
Identical National Standard OfISO 17734-1:2013
DescriptorsMass spectrometry, Amines (aliphatic), Gas analysis, Environment (working), Liquid chromatography, Occupational safety, Butyl compounds, Determination of content, Air, Aliphatic nitrogen compounds, Isocyanates, Degradation
ICS13.040.30 Workplace atmospheres
CommitteeEH/2/2
ISBN978 0 580 77427 0
PublisherBSI
Pages44

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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