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Ecological environment protection related standards implemented from July 2025

Time：

2025-07-01

24 ecological environment protection related standards will be implemented from July 1, 2025.

The following 24 standards related to ecological environment protection will be implemented from July 1, 2025. The "Determination of Total Salt Content in Water Quality by Gravimetric Method" (HJ/T 51-1999), "Determination of Nitrite Nitrogen in Water Quality by Gas Phase Molecular Absorption Spectroscopy" (HJ/T 197-2005), and "Determination of Nitrate Nitrogen in Water Quality by Gas Phase Molecular Absorption Spectroscopy" (HJ/T 198-2005) are simultaneously abolished.

1. HJ 51-2024 "Determination of Total Salt Content in Water Quality by Gravimetric Method"

2. HJ 197-2024 "Determination of Nitrite Nitrogen in Water Quality by Gas Phase Molecular Absorption Spectroscopy"

3. HJ 198-2024 "Determination of Nitrate Nitrogen in Water Quality by Gas Phase Molecular Absorption Spectroscopy"

4. HJ 915.1-2024 Technical Requirements for Site Selection and Infrastructure Construction of Surface Water Quality Automatic Monitoring Stations

5. HJ 915.2-2024 Technical Specification for Installation and Acceptance of Surface Water Quality Automatic Monitoring Stations (Conventional Five Parameters, CODMn, NH3-N, TP, TN)

6. HJ 915.3-2024 Technical Specification for Operation and Maintenance of Surface Water Quality Automatic Monitoring Station (Conventional Five Parameters, CODMn, NH3-N, TP, TN)

7. HJ 1388-2024 "Determination of Hydrogen Sulfide in Waste Gas from Fixed Pollution Sources - Methylene Blue Spectrometric Method"

8. HJ 1389-2024 "Determination of 12 Polychlorinated Biphenyls in Waste Gas from Fixed Pollution Sources - Isotope Dilution/High Resolution Gas Chromatography High Resolution Mass Spectrometry Method"

9. HJ 1390-2024 "Determination of Chloromethyl Ether and Dichloromethyl Ether in Waste Gas from Fixed Pollution Sources by Gas Chromatography Method"

10. HJ 1391-2024 "Determination of 9 Haloacetic Acid Compounds in Waste Gas from Fixed Pollution Sources by Gas Chromatography Method"

11. HJ 1392-2024 "Determination of Trifluoromethane, Tetrafluoromethane, Hexafluoroethane, and Sulfur Hexafluoride in Environmental Air and Waste Gas by Gas Chromatography Mass Spectrometry"

12. HJ 1393-2024 "Technical Specification for Automatic Monitoring of Gaseous Pollutants (Ammonia, Hydrogen Sulfide) in Environmental Air"

13. HJ 1394-2024 "Technical Requirements and Detection Methods for Automatic Monitoring System of Gaseous Pollutants (Ammonia, Hydrogen Sulfide) in Environmental Air"

14. HJ 1395-2024 "Determination of 17 heterocyclic pesticides in water quality - High performance liquid chromatography method"

15. HJ 1396-2024 "Sensor Method for Determination of Water Quality and Temperature"

16. HJ 1397-2024 "Determination of Strontium in Water Quality - Flame Atomic Absorption Spectrometric Method"

17. HJ 1398-2024 "Determination of 18 sulfonamide antibiotics and trimethoprim in water quality - High performance liquid chromatography triple quadrupole mass spectrometry method"

18. HJ 1399-2024 "Determination of 17 Fluoroquinolone Antibiotics in Water Quality by High Performance Liquid Chromatography Triple Quadrupole Mass Spectrometry"

19. HJ 1400-2024 "Technical Requirements and Testing Methods for Copper Automatic Monitoring Instruments for Water Quality"

20. HJ 1401-2024 "Technical Requirements and Testing Methods for Nickel Automatic Monitoring Instruments for Water Quality"

21. HJ 1402-2024 "Technical Specification for Automatic Monitoring of Construction Noise"

22. HJ 1403-2024 "Technical Specification for Automatic Monitoring of Carbon Monoxide and Hydrogen Chloride in Waste Gas from Fixed Pollution Sources"

23. HJ 1404-2024 "Technical Requirements for Communication Protocol of Surface Water Automatic Monitoring System"

24. HJ 1415-2025 "Technical Specification for Pollution Control of Utilization and Harmless Storage of Phosphogypsum"