Standards

HJ 1233-2021 The technical specifications for drone remote sensing aerial survey in the investigation and rectification of inflow and outflow sewage outlets

This standard specifies the workflow for drone aerial survey of river (sea) discharge outlets, including preparation for the flight, flight implementation, data processing, quality control, and submission of results. This standard applies to the first-level survey of river (sea) discharge outlets conducted using drone aerial survey systems.

Publish Date: 2021-12-24

HJ 1232-2021

This standard specifies the workflow of the three-level investigation of river (sea) discharge outlets, preliminary preparations, technical requirements for the first-level investigation, second-level investigation, and third-level investigation, as well as related requirements such as quality control and submission of results. This standard applies to the investigation of river (sea) discharge outlets.

Publish Date: 2021-12-24

HJ 2.4-2021 Environmental Impact Assessment Technical Guidelines for Sound Environment

Publish Date: 2021-12-24

HJ 1230-2021 Industrial enterprise volatile organic compound (VOC) leak detection and repair technical guidelines

This standard specifies the technical requirements for the establishment of projects, on-site detection, leak repair, quality assurance and control, and reporting of volatile organic compound (VOC) leak detection and repair in industrial enterprises. This standard applies to the detection and repair of VOC leaks in equipment and pipeline components, as well as exhaust gas collection system conveying pipeline components in industrial enterprises.

Publish Date: 2021-12-21

HJ 1229-2021 Priority Evaluation of Chemical Substance Screening Techniques Guidelines

This standard specifies the principles, procedures, and technical requirements for the prioritized evaluation of chemical substances. This standard applies to the screening of priority-evaluated chemical substances in environmental risk assessment and control of chemical substances. This standard can be used as a technical basis for determining priority-evaluated chemical substances by ecological and environmental authorities at all levels, enterprises and institutions, etc.

Publish Date: 2021-12-21

HJ 1227-2021 Water quality and volatile organic compounds: Emergency determination using portable headspace/gas chromatography-mass spectrometry

Emergency determination of volatile organic compounds in water quality using portable headspace/gas chromatography-mass spectrometry method

Publish Date: 2021-12-16

HJ 1226-2021 HJ 1226-2021 Water quality - Determination of sulfide. Methane blue spectrophotometric method

This standard specifies the methylene blue spectrophotometric method for determining sulfides in water. This standard is applicable to the determination of sulfides in surface water, groundwater, domestic wastewater, industrial wastewater, and seawater. When the sampling volume is 200 ml and a 10 mm optical path cuvette is used, the method's detection limit is 0.01 mg/L, and the determination limit is 0.04 mg/L; when a 30 mm optical path cuvette is used, the method's detection limit is 0.003 mg/L, and the determination limit is 0.012 mg/L. Note: The 30 mm optical path cuvette is only used for the determination of sulfides in groundwater or low-concentration seawater that meets or exceeds the first-class standard. The pretreatment method should be the "acidification-distillation-absorption" method.

Publish Date: 2021-12-16

HJ 589-2021 Emergency Monitoring Technical Specification for Sudden Environmental Events

This standard specifies the technical requirements for the initiation and working principles of emergency monitoring for sudden environmental incidents, preliminary identification of pollution situations, emergency monitoring plans, follow-up monitoring, emergency monitoring reports, quality assurance and quality control, and termination of emergency monitoring. This standard applies to emergency monitoring of sudden environmental incidents caused by factors such as the production, operation, storage, transportation, use, and disposal of hazardous chemicals or hazardous waste, as well as accidental factors or irresistible natural disasters, including emergency monitoring of the atmosphere, surface water, groundwater, and soil environments. Note: This standard does not apply to emergency monitoring for radiation accidents, marine pollution incidents, pollution incidents involving military facilities, biological and microbial pollution incidents, or heavy pollution weather. Related emergency monitoring work can be carried out in accordance with relevant technical specifications and standards. Emergency monitoring of radiation accidents caused by factors such as nuclear technology utilization, transportation of radioactive items, and radioactive waste treatment, storage, and disposal facilities or activities shall comply with the requirements of HJ 1155. Radiation pollution incidents caused by nuclear accidents at nuclear facilities and related nuclear activities, marine oil spills, and ship pollution incidents shall be handled in accordance with the provisions of relevant emergency response plans. Emergency monitoring includes two stages: preliminary identification of pollution situations and follow-up monitoring. Subsequent monitoring conducted after the termination of emergency monitoring is not subject to this standard and can be carried out in accordance with relevant technical specifications and standards.

Publish Date: 2021-12-16

HJ 1225-2021 Automatic determination of ozone in ambient air by chemical luminescence method

This standard specifies the chemiluminescence method for automatically measuring ozone in ambient air. This standard is applicable to the automatic measurement of ozone in ambient air. When the instrument's measurement range is 0 nmol/mol to 500 nmol/mol, the detection limit of this method under reference conditions (298.15 K, 101.325 kPa) is 4 μg/m3, and the measurement limit is 16 μg/m3.

Publish Date: 2021-12-16

HJ 1224-2021 Determination of Organic Chlorine Pesticides in Ambient Air by High Resolution Gas Chromatography-High Resolution Mass Spectrometry

This standard specifies the high-resolution gas chromatography-high resolution mass spectrometry method for determining organic chlorine pesticides in ambient air. This standard is applicable to the determination of hexachlorobenzene, α-hexachlorocyclohexane, γ-hexachlorocyclohexane, β-hexachlorocyclohexane, δ-hexachlorocyclohexane, heptachlor, Aldrin, Chlordecone, cis-Oxydichlorodibenzo-p-dioxin, trans-Oxydichlorodibenzo-p-dioxin, trans-Chlordecone, 2,4'-DDE, trans-Nonachlor, cis-Chlordecone, 4,4'-DDE, Dieldrin, 2,4'-DDD, m-DDD, 2,4'-DDT, cis-Nonachlor, 4,4'-DDT, and Methyl parathion (a total of 25 organic chlorine pesticides) in ambient air and particulate matter. See Appendix A. When the sampling volume is 30 m3 (standard conditions) and the concentrated and diluted volume is 20 μL, the detection limit for hexachlorobenzene is 0.9 pg/m3, and the determination limit is 3.6 pg/m3; when the sampling volume is 1200 m3 (standard conditions) and the concentrated and diluted volume is 20 μL, the detection limits for other organic chlorine pesticides except hexachlorobenzene range from 0.006 pg/m3 to 0.03 pg/m3, and the determination limits range from 0.024 pg/m3 to 0.12 pg/m3. See Appendix B for details.

Publish Date: 2021-12-16

HJ 1223-2021 Emergency determination of volatile organic compounds in ambient air using portable gas chromatography-mass spectrometry

This standard specifies the portable gas chromatography-mass spectrometry method for measuring volatile organic compounds in ambient air. This standard is applicable to the on-site emergency measurement of 52 kinds of volatile organic compounds, such as toluene, in the ambient air around the site of sudden environmental incidents. Other volatile organic compounds can also be used for qualitative analysis and concentration estimation with this method. Under full scan mode, when the sample injection volume is 600 ml and the split ratio is 50:1, or when the sample injection volume is 100 ml and no split is used, the method's detection limit is 3 μg/m3 to 9 μg/m3, and the determination limit is 12 μg/m3 to 36 μg/m3. For details, please refer to Appendix A.

Publish Date: 2021-12-16

HJ 1222-2021 The determination of moisture and dry matter content in solid waste using weight method

This standard specifies the gravimetric method for determining the moisture and dry matter content in solid waste. This standard is applicable to the determination of moisture and dry matter content in common solid waste, but it is not suitable for the determination of moisture and dry matter content in samples of solid waste with high volatile organic matter content and those that are flammable and explosive.

Publish Date: 2021-12-16