GB/T 6919-1986
Abolished
T/GXAS 496-2023
Active
Group standards
T/GXAS 496-2023 The determination of volatile organic compounds in ambient air using a vehicle-mounted dual-channel mass spectrometer
T/GXAS 496-2023 The determination of volatile organic compounds in ambient air using a vehicle-mounted dual-channel mass spectrometer
Price:
$ 20.00
Basic Information
Standard Code:
T/GXAS 496-2023
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Environmental protection
ICS Name:
Environmental air
Publish Date:
2023-06-15
Implement Date:
2023-06-21
Scope
Scope: This document specifies a dual-channel mass spectrometer method for measuring 80 volatile organic compounds (VOCs), including toluene, in ambient air. This document is applicable to on-site emergency monitoring of 80 VOCs and rapid screening of VOCs in ambient air and fugitive emissions. Other VOCs can also be measured using this method if their method applicability is verified. Under the sampling volume specified in this document, the method detection limit is 66 μg/m3 and the measurement limit is 264 μg/m3 in direct mass spectrometry mode; in gas chromatography-mass spectrometry mode, the method detection limit ranges from 3 μg/m3 to 13 μg/m3, and the measurement limit ranges from 12 μg/m3 to 52 μg/m3. The method complies with the requirements of Appendices A.1 and A.2. Main technical content: This document specifies a dual-channel mass spectrometer method for measuring 80 VOCs, including toluene, in ambient air. This document is applicable to on-site emergency monitoring of 80 VOCs and rapid screening of VOCs in ambient air and fugitive emissions. Other VOCs can also be measured using this method if their method applicability is verified. Under the sampling volume specified in this document, the method detection limit is 66 μg/m3 and the measurement limit is 264 μg/m3 in direct mass spectrometry mode; in gas chromatography-mass spectrometry mode, the method detection limit ranges from 3 μg/m3 to 13 μg/m3, and the measurement limit ranges from 12 μg/m3 to 52 μg/m3. The method complies with the requirements of Appendices A.1 and A.2.
Development Information
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Active