IS 16139 : Part 1 : 2025/ISO 17734-1 : 2013 Workplace Air-Determination of Organonitrogen Compounds in Air Using Liquid Chromatography and Mass Spectrometry - Part 1 Isocyanates Using Dibutylamine Derivatives
NATIONAL FOREWORD
This Indian Standard (Part 1) (First Revision) which is identical to ISO 17734-1 : 2013 'Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry - Part 1: Isocyanates using dibutylamine derivatives' issued by the International Organization for Standardization (ISO), was adopted by the Bureau of Indian Standards on the recommendation of the Air Quality Sectional Committee and approval of the Chemical Division Council.
Isocyanates have been used in industry for about 50 years. They are commercially important chemicals mainly used for the production of polyurethane (PUR). In spite of controls to limit exposures, there are adverse health effects such as asthma, contact dermatitis, and hypersensitivity pneumonitis as consequences of exposure to isocyanates in some industrial sectors.
This standard was first published in 2014 as an identical adoption of ISO 17734-1 : 2006 under dual numbering. This revision has been brought out in order to adopt the latest version of ISO 17734-1 : 2013.
This part gives general guidance for the sampling and analysis of airborne isocyanates in workplace air. When amines and aminoisocyanates are suspected to be emitted (for example, 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.
This Indian standard has been published in two parts. The other part in this series is:
Part 2 Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives
The text of ISO standard has been approved as suitable for publication as an Indian Standard without deviations. Certain conventions and terminologies are, however, not identical to those used in Indian Standards. Attention is particularly drawn to the following:
a) Wherever the words 'International Standard' appear referring to this standard, they should be read as 'IndianStandard'; and
b) Comma (,) has been used as a decimal marker in the International Standard, while in Indian Standards, the currentpractice is to use a point (.) as the decimal marker.