In order to further improve the ecological environment monitoring standard system, standardize ecological environment monitoring behaviors, improve the quality of environmental monitoring data, serve ecological environment supervision and law enforcement, promote ecological environmental protection and protect human health, the Ministry of Ecology and Environment recently issued 5 national ecological environment standards. The five standards are all related to water quality testing, and they are all released for the first time.

"Water Quality Determination of 28 Organophosphorus Pesticides by Gas Chromatography-Mass Spectrometry" (HJ 1189-2021)

This standard specifies the gas chromatography-mass spectrometry method for the determination of organophosphorus pesticides in water. It is applicable to dichlorvos, dichlorvos, chlorpheniramine, internal phosphorus, methophos, pyridoxine, and methionine in surface water, groundwater, seawater, domestic sewage and industrial wastewater. Phosphorus, Terbuthion, Diazinon, Dimethophos, Isopyridine, Dimethoate, Chloroxafos, Chlorpyrifos-methyl, Phosphosamine, Parathion-methyl, Chlorpyrifos, Pythion, Horse Lathion, parathion, bromphos, methyl isofenphos, hydrocarbophos, rice phos, profenofos, fenamiphos, triazophos, coumaphos, trichlorfon, etc. 28 kinds of organic Determination of phosphorus pesticides. This standard applies to many analysis objects and has good separation effect. It can support the implementation of water environmental quality standards such as "Surface Water Environmental Quality Standard" (GB 3838-2002) and "Groundwater Quality Standard" (GB/T 14848-2017). It is a pesticide industry The formulation and revision of water pollutant discharge standards and the refined management of corporate pollutant discharge provide technical support for monitoring.

The standard will be implemented on April 1, 2022.

"The Identification of Biological Indicators of Water Quality Sterilization (Bacillus subtilis Black Variety) Biological Testing Method" (HJ 1190-2021)

This standard specifies the biological method for identifying biological indicators of sterilization in water (Bacillus subtilis black variant). It is suitable for the evaluation of the sterilization effect of wastewater in the microbiological laboratory. The issuance and implementation of this standard can support the biological testing of the sterilization effect of microbiological laboratory wastewater, which is conducive to the implementation of the "Biosafety Law", strengthens the prevention of biosafety risks, and protects the ecological environment.

The standard will be implemented on April 1, 2022.

"Water quality-Determination of azide spectrophotometric method" ( HJ 1191-2021)

This standard specifies the spectrophotometric method for the determination of azide in water, which is suitable for the determination of azide in surface water, groundwater, domestic sewage and industrial wastewater. Azide is highly toxic and dangerous. The issuance and implementation of this standard is conducive to the refined management and control of water pollutants discharged from azide by related industries, and plays an important role in protecting the ecological environment and safeguarding human health.

The standard will be implemented on April 1, 2022.

"Water Quality Determination of 9 Alkylphenol Compounds and Bisphenol A-Solid Phase Extraction/High Performance Liquid Chromatography" (HJ 1192-2021)

This standard specifies the high performance liquid chromatography method for the determination of alkylphenol compounds and bisphenol A in water. It is applicable to 4-tert-butylphenol, 4-butylphenol and 4-tert-butylphenol in surface water, groundwater, domestic sewage and industrial wastewater. 9 kinds of alkylphenol compounds including amylphenol, 4-hexylphenol, 4-heptylphenol, 4-octylphenol, 4-branched nonylphenol, 4-tert-octylphenol and 4-nonylphenol, etc. Determination of Bisphenol A. It can support the implementation of water pollutant discharge standards such as the "Petrochemical Industry Pollutant Discharge Standard" (GB 31571-2015). Alkylphenol compounds and bisphenol A are typical endocrine disruptors, which are toxic, persistent, and bioaccumulative. my country has banned the production of related products and has set limit indicators in the pollutant emission standards of related industries. The issuance and implementation of this standard will help strengthen the control of water pollutant discharge and provide monitoring method support for the pollution control of alkylphenol compounds and bisphenol A.

The standard will be implemented on April 1, 2022.

"Water Quality-Determination of Indium-Graphite Furnace Atomic Absorption Spectrophotometry" (HJ 1193-2021)

This standard specifies the graphite furnace atomic absorption spectrophotometric method for the determination of indium in water, which is applicable to the determination of indium in surface water, groundwater and industrial wastewater. With the development of high-tech industries, the use of indium has become increasingly widespread, and attention needs to be paid to the impact of indium-containing pollutants on the ecological environment. This standard has strong selectivity and high sensitivity, and the prices of instruments and equipment used and analysis costs are relatively low. The issuance and implementation of this standard can provide technical support for the determination of indium in water pollutants in the water environment and related industries.

The standard will be implemented on January 1, 2022.