Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Isocyanates using dibutylamine derivatives Ingestion-build-251241 BS 2782-7:Method 721A also focused

BS 2782-7:Method 721A also focused on the tow deformation phenomenon in the reinforcing fibres

Requirements for compounds

Other technical measures for reducing noise at the design stage may be used if their efficacy is identical or higher

The change compared to the previous edition is:

Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Isocyanates using dibutylamine derivatives Ingestion-build-251241 BS 2782-7:Method 721A also focused1 Scope 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