Download or read book GB T 23990 2009 Translated English of Chinese Standard GBT 23990 2009 GB T23990 2009 GBT23990 2009 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2021-03-20 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This standard specifies the use of gas chromatography to determine the content of benzene, toluene, ethylbenzene and xylene in coatings. In this standard, Method A is suitable for the determination of benzene, toluene, ethylbenzene and xylene content in solvent-based coatings; Method B is suitable for the determination of benzene, toluene, ethylbenzene and xylene content in water-based coatings.