Norm

ISO 17734-1:2006 en

Bepaling van organostikstofverbindingen in lucht met behulp van vloeistofchromotografie en massaspectrometrie - Deel 1:Isocyanaten met behulp van dibutylaminen derivaten

  • Deze norm is ingetrokken sinds 04-12-2013

114,67

Over deze norm

Status Ingetrokken
Aantal pagina's 29
Commissie Werkplek- en buitenluchtmetingen
Gepubliceerd op 01-03-2006
Taal Engels
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 air are determined, using DBA and ethyl chloroformate as reagents (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- (HDI), 2,4- and 2,6-toluene- (TDI), 4,4'-diphenylmethane- (MDI), 1,5-naphthyl- (NDI), isophorone- (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 50 fmol and for aromatic isocyanates, it is 2 fmol. For a 15-l air sample, this corresponds to 0,6 ngÅm-3 for HDI and 0,02 ngÅm-3 for TDI. The useful range, for a 5-l air sample, of the method is approximately 0,001 µgÅm-3 to 200 mgÅm-3 for TDI.

Details

ICS-code 13.040.30
Nederlandse titel Bepaling van organostikstofverbindingen in lucht met behulp van vloeistofchromotografie en massaspectrometrie - Deel 1:Isocyanaten met behulp van dibutylaminen derivaten
Engelse titel Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Part 1: Isocyanates using dibutylamine derivatives
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