生态环境部发布5项国家生态环境检测标准

The Ministry of Ecology and Environment issued five national ecological environment testing standards

日前，生态环境部发布了《水质 6种苯氧羧酸类除草剂和麦草畏的测定 高效液相色谱法》(HJ 1267-2022)、《水质 甲基汞和乙基汞的测定 液相色谱-原子荧光法》(HJ 1268-2022)、《土壤和沉积物 甲基汞和乙基汞的测定 吹扫捕集/气相色谱-冷原子荧光光谱法》(HJ 1269-2022)、《环境空气 26种多溴二苯醚的测定 高分辨气相色谱-高分辨质谱法》(HJ 1270-2022)和《环境空气 颗粒物中甲酸、乙酸和乙二酸的测定 离子色谱法》(HJ 1271-2022)等5项国家生态环境标准，支撑相关生态环境质量标准、风险管控标准和污染物排放标准的实施。

(HJ 1269-2022), "Determination of 26 polybrominated diphenyl ethers in ambient air by high-resolution gas chromatography-high-resolution mass spectrometry" (HJ 1270-2022) and "Determination of formic acid, acetic acid and glycolic acid in ambient air particulate matter by ion chromatography" (HJ 1271-2022), etc. to support the implementation of relevant ecological quality standards, risk management standards and pollutant emission standards. implementation of pollutant emission standards.

《水质6种苯氧羧酸类除草剂和麦草畏的测定 高效液相色谱法》（HJ 1267-2022）

"Water Quality Determination of 6 Phenoxycarboxylic Acid Herbicides and Dicamba by High Performance Liquid Chromatography" (HJ 1267-2022)

该标准规定了测定水中苯氧羧酸类除草剂和麦草畏的高效液相色谱法，适用于地表水、地下水、生活污水、工业废水和海水中麦草畏等7种除草剂的测定。该标准不需要对水样进行衍生，采用液液萃取或直接净化后进样，方法简便、快速，支撑《地下水质量标准》(GB/T 14848-2017)等水环境质量标准实施。据悉，该标准为首次发布，将于2023年6月15日实施。

The standard specifies a high performance liquid chromatographic method for the determination of phenoxycarboxylic acid herbicides and dicamba in water, and is applicable to the determination of seven herbicides such as dicamba in surface water, groundwater, domestic sewage, industrial wastewater and seawater. The standard does not require derivatization of water samples, using liquid-liquid extraction or direct purification of the sample, the method is simple, rapid, and supports the implementation of water environmental quality standards such as "groundwater quality standards" (GB/T 14848-2017). It is reported that the standard is published for the first time and will be implemented on June 15, 2023.

《水质 甲基汞和乙基汞的测定 液相色谱-原子荧光法》（HJ 1268-2022）

"Water Quality Determination of Methylmercury and Ethylmercury Liquid Chromatography-Atomic Fluorescence Spectrometry" (HJ 1268-2022)

该标准规定了测定水中甲基汞和乙基汞的液相色谱-原子荧光法，适用于地表水、地下水、生活污水、工业废水和海水中甲基汞和乙基汞的测定。该标准采用二氯甲烷液液萃取，液相色谱-原子荧光法测定，方法前处理过程简单，灵敏度高、稳定性好，支撑《地表水环境质量标准》(GB 3838-2002)、《污水综合排放标准》(GB 8978-1996)、《城镇污水处理厂污染物排放标准》(GB 18918-2002)等水环境质量标准和水污染物排放标准实施。据悉，该标准为首次发布，将于2023年6月15日实施。

The standard specifies a liquid chromatography-atomic fluorescence method for the determination of methylmercury and ethylmercury in water, which is applicable to the determination of methylmercury and ethylmercury in surface water, groundwater, domestic sewage, industrial wastewater and seawater. This standard adopts liquid-liquid extraction with dichloromethane and liquid chromatography-atomic fluorescence method for the determination of methylmercury and ethylmercury in water, which is a simple pre-treatment process with high sensitivity and stability. Environmental quality standards and water pollutant discharge standards are implemented. It is reported that the standards are released for the first time and will be implemented on June 15, 2023.

《土壤和沉积物 甲基汞和乙基汞的测定 吹扫捕集/气相色谱-冷原子荧光光谱法》（HJ 1269-2022）

"Determination of Methylmercury and Ethylmercury in Soil and Sediments Purge and Trap/Gas Chromatography-Cold Atomic Fluorescence Spectrometry" (HJ 1269-2022)

该标准规定了测定土壤和沉积物中甲基汞和乙基汞的吹扫捕集/气相色谱-冷原子荧光光谱法，适用于土壤和沉积物中甲基汞和乙基汞的测定。该标准具有基体干扰小、灵敏度高、操作简便等优点，适合批量样品的快速测定，支撑《土壤环境质量 建设用地土壤污染风险管控标准(试行)》(GB 36600-2018)等标准实施。据悉，该标准为首次发布，将于2023年6月15日实施。

This standard specifies a blowdown trap/gas chromatography-cold atomic fluorescence spectrometry method for the determination of methylmercury and ethylmercury in soil and sediment. The standard has the advantages of low matrix interference, high sensitivity and easy operation, suitable for rapid determination of batch samples, and supports the implementation of standards such as "Soil Environmental Quality Soil Contamination Risk Control Standards for Construction Land (Trial)" (GB 36600-2018). It is reported that the standard is released for the first time and will be implemented on June 15, 2023.

《环境空气26种多溴二苯醚的测定 高分辨气相色谱-高分辨质谱法》（HJ 1270-2022）

"Determination of 26 Polybrominated Diphenyl Ethers in Ambient Air High Resolution Gas Chromatography-High Resolution Mass Spectrometry" (HJ 1270-2022)

该标准规定了测定环境空气中多溴二苯醚的高分辨气相色谱-高分辨质谱法，适用于环境空气气相和颗粒相中 BDE 7、BDE 15、BDE 17、BDE 28、BDE 47、BDE 49、 BDE 66、BDE 71、BDE 77等26 种多溴二苯醚的测定。该标准目标物涵盖《持久性有机污染物全球监测计划导则》中全部多溴二苯醚，支撑《新污染物治理行动方案》实施及《关于持久性有机污染物的斯德哥尔摩公约》履约监测工作。据悉，该标准为首次发布，将于2023年6月15日实施。

This standard specifies a high-resolution gas chromatography-high-resolution mass spectrometry method for the determination of 26 PBDEs in ambient air, including BDE 7, BDE 15, BDE 17, BDE 28, BDE 47, BDE 49, BDE 66, BDE 71, and BDE 77 in the gas and particulate phases. The standard covers all PBDEs in the "Guidelines for the Global Monitoring Plan for Persistent Organic Pollutants" and supports the implementation of the "New Pollutant Management Action Program" and the compliance monitoring of the "Stockholm Convention on Persistent Organic Pollutants". It is reported that the standard is the first release and will be implemented on June 15, 2023.

《环境空气 颗粒物中甲酸、乙酸和乙二酸的测定 离子色谱法》（HJ 1271-2022）

"Determination of formic acid, acetic acid and oxalic acid in ambient air particulate matter by ion chromatography" (HJ 1271-2022)

该标准规定了测定环境空气颗粒物中甲酸、乙酸和乙二酸的离子色谱法，适用于环境空气和无组织排放监控点空气颗粒物中甲酸、乙酸和乙二酸的测定。该标准对样品采集和保存、前处理、分析步骤、质量保证和质量控制等过程作出规定，支撑大气颗粒物来源解析工作。据悉，该标准为首次发布，将于2023年6月15日实施。

The standard specifies an ion chromatographic method for the determination of formic acid, acetic acid and ethanedioic acid in ambient air particulate matter, and is applicable to the determination of formic acid, acetic acid and ethanedioic acid in ambient air and air particulate matter at unorganized emission monitoring sites. The standard provides for sample collection and preservation, pretreatment, analytical procedures, quality assurance and quality control processes to support the analysis of atmospheric particulate matter sources. It is reported that the standard is published for the first time and will be implemented on June 15, 2023.