HJ 193 Technical Specifications for Installation and Acceptance of Ambient air Quality Continuous Automated Monitoring System for SO2, NO2, O3 and CO
HJ 654 Ambient air gaseous pollutants (SO2, NO2, O3, CO) continuous automatic monitoring system technical requirements and detection methods "No. 1 Amendment"
HJ 663 Technical regulation for ambient air quality assessment (on trial)
HJ 818 Technical specifications for the operation and quality control of the continuous automatic monitoring system for ambient air gaseous pollutants (SO2, NO2, O3, CO)
HJ 1044-2019 history
2019HJ 1044-2019 Automatic Determination of Sulfur Dioxide in Ambient Air by Ultraviolet Fluorescence Method