Standard No.:	HJ 644-2013
English Name:	Ambient air - Determination of volatile organic compounds-Sorbent adsorption and thermal desorption/gas chromatography mass spectrometry method
Chinese Name:	环境空气 挥发性有机物的测定 吸附管采样-热脱附/气相色谱-质谱法
Professional Classification:	HJ    Professional Standard - Environment
Issued by:	ZHB
Issued on:	2013-2-17
Implemented on:	2013-7-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
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This standard specifies the sorbent adsorption and thermal desorption / gas chromatography mass spectrometry method for determination of volatile organic compounds (VOCs) in ambient air. This standard is applicable to the determination of 35 volatile organic compounds in the ambient air. This standard, if verified, may also be applicable to the determination of other nonpolar or weakly polar volatile organic compounds. Where the sampling volume is 2L, the method detection limit of this standard is 0.3~1.0μg/m3 and the determination lower limit is 1.2~4.0μg/m3 as detailed in Appendix A.

Foreword i 1 Scope 2 Normative References 3 Principle 4 Reagents and Materials 5 Apparatus 6 Sample 7 Analysis Procedure 8 Result Calculation and Expression 9 Precision and Accuracy 10 Quality Assurance and Quality Control 11 Precautions Appendix A (Normative) Detection Limit and Determination Limit of Target Compounds Appendix B (Informative) Reference Information for Determination of Target Compounds Appendix C (Informative) Precision and Accuracy