HJ 1042-2019 (English Version) PDF

Scope: This standard specifies a solution absorption-headspace/gas chromatography method for the determination of trimethylamine in ambient air and exhaust gases from stationary pollution sources. This standard is applicable to the determination of trimethylamine in ambient air, air at unorganized emission monitoring points from fixed pollution sources, and organized exhaust gas. When using a hydrogen flame ionization detector, when the air sampling volume is 20 L (reference state) and the absorbing liquid volume is 10 ml, the method detection limit is 0.004 mg/m3 and the lower determination limit is 0.016 mg/m3; when the exhaust gas When the sampling volume is 20 L (standard state) and the absorption liquid volume is 50 ml, the detection limit of the method is 0.04 mg/m3 and the lower determination limit is 0.16 mg/m3. When using a nitrogen and phosphorus detector, when the air sampling volume is 20 L (reference state) and the absorbing liquid volume is 10 ml, the method detection limit is 0.0007 mg/m3 and the lower determination limit is 0.0028 mg/m3; when the exhaust gas sampling volume When the volume of absorption liquid is 20 L (standard state) and the volume of absorption liquid is 50 ml, the detection limit of the method is 0.006 mg/m3 and the lower limit of determination is 0.024 mg/m3.

HJ 1042-2019 Referenced Document

GB 14554 Emission standards for odor pollutants
GB/T 16157 "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Methods of Gaseous Pollutants" Amendment No. 1
HJ 194 Technical specification for manual monitoring of ambient air quality "Revision No. 1"
HJ 905 Odor Pollution Environmental Monitoring Technical Specifications
HJ/T 397 Technical specifications for emission monitoring of stationary source
HJ/T 55 Technical guidelines for fugitive emission monitoring of air pollutants

2019 HJ 1042-2019 Ambient air and waster gas-Determination of trimethylamine-Solvent absorption-Headspace/gas chromatography