GSO ISO 17734-2:2021

ISO 17734-2:2013
Gulf Standard   Current Edition · Approved on 01 July 2021

Determination of organonitrogen compounds in air using liquid chromatography and mass spectrometry — Part 2: Amines and aminoisocyanates using dibutylamine and ethyl chloroformate derivatives

GSO ISO 17734-2:2021 Files

GSO ISO 17734-2:2021 Scope

ISO 17734-2:2013 gives general guidance for the sampling and analysis of airborne amines and aminoisocyanates in workplace air. It is strongly recommended that the determination of amines and aminoisocyanates is made together with the determination of isocyanates in air, using DBA as a reagent (see ISO 17734-1).

The method can be used for simultaneous determinations of amines, such as 4,4'-methylenediphenyldiamine (4,4'-MDA), 2,4- and 2,6-toluenediamine (2,4- and 2,6-TDA), and 1,6-hexamethylenediamine (1,6-HDA), and compounds containing both isocyanate and amine groups, such as 4,4'-methylenediphenyl aminoisocyanate (4,4'-MAI), 2,4-, 4,2-, and 2,6-toluene aminoisocyanate (2,4-, 4,2-, and 2,6-TAI), and 1,6-hexamethylene aminoisocyanate (1,6-HAI). The method is suitable for collecting amines and aminoisocyanates in both the gas and particle phases. The instrumental detection limit for the amines is about 5 nmol/sample and for the aminoisocyanate, it is about 0,3 nmol/sample. For a 15 l air sample, this corresponds to 0,4 ng⋅m?3 for TDA and 0,03 ng⋅m?3 for TAI.

Best Sellers From Chemical and Textile Sector

OS GSO 1943:2024
GSO 1943:2024 
Omani Standard
Cosmetic Products – Safety Requirements of Cosmetics and Personal Care Products
GSO 1943:2024
 
Gulf Technical Regulation
Cosmetic Products – Safety Requirements of Cosmetics and Personal Care Products
GSO 2528:2024
 
Gulf Technical Regulation
Cosmetic products – Technical Regulation of Cosmetic and Personal Care Products Claims
OS GSO 2528:2024
GSO 2528:2024 
Omani Standard
Cosmetic products – Technical Regulation of Cosmetic and Personal Care Products Claims

Recently Published from Chemical and Textile Sector

OS GSO ISO 456:1994
ISO 456:1973 
Omani Standard
Surface active agents: Analysis of soaps - Determination of free caustic alkali
OS GSO ISO 1139:1994
ISO 1139:1973 
Omani Standard
Textile -designation of yarns.
GSO ISO 456:1994
ISO 456:1973 
Gulf Standard
Surface active agents: Analysis of soaps - Determination of free caustic alkali
GSO ISO 1139:1994
ISO 1139:1973 
Gulf Standard
Textile -designation of yarns.