GB/T 37185-2018Gas analysis—Determination of indoor harmful volatile organic compounds—"SUMMA canister and silonite tube" and chromatography/mass spectrometry (GC/MS) (English PDF)

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009.

1 Scope

This standard specifies the SUMMA tank sampling-gas chromatography/mass spectrometry for the determination of volatile hazardous organic compounds in indoor air.

This standard applies to the determination of 19 volatile organic compounds in air such as residential buildings, office buildings, environmental test chambers (see Appendix A), and His indoor volatile organic compounds (see Appendix B) are measured. Determination of volatile organic compounds in other indoor air can refer to this standard carried out.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 3864 Industrial nitrogen

GB/T 4844 pure helium, high purity helium and ultra pure helium

GB/T 8979 pure nitrogen, high purity nitrogen and ultra pure nitrogen

GB/T 18883-2002 Indoor Air Quality Standard

HJ759-2015 Determination of Volatile Organic Compounds in Air - Tank Sampling/Gas Chromatography - Mass Spectrometry

ISO 16000-6:2011 Indoor air - Part 6. Determination of volatile organic compounds in air in indoor and test chambers Tenax - TA adsorbent activity sampling, thermal desorption and GC-MS/FID method (Indoorair-Part 6. Determination of volatile OrganiccompoundsinindoorandtestchamberairbyactivesamplingonTenaxTAsorbent,thermalde-sorptionandgaschromatographyusingMSorMS-FID)

3 Terms and definitions

The following terms and definitions apply to this document.

4 Principle of the method

The indoor air sample is collected by a stainless steel tank with a tank pressure of less than 10 Pa inerted by the inner wall, concentrated by cold trap, and desorbed by heating.

After that, the gas chromatograph is separated by a capillary column and detected by a mass spectrometer. Pass with standard mass spectrometry database and retention time The comparison is qualitative, and the external standard method is quantitative.