HJ 918-2017.Technical specifications for environmental vibration monitoring. 1适用范围 HJ 918规定了环境振动监测的仪器性能、测量条件、测点布设、拾振器的安装、采样及数据分析、测量时段及测量量、测量记录、质量保证和质量

HJ 917-2017.Stationary source emission-Determination of total gaseous mercury-Carbon sorbent traps / thermal cracking atomic absorption spectrophotome

HJ 925-2017.Technical requirement and test procedures for portable dissolved oxygen meter. 1适用范围 HJ 925规定了便携式溶解氧测定仪的技术要求、性能指标及检测方法。 HJ 925适用于便携式溶解氧测定仪

HJ 923-2017.Soil and sediment- Determination of total mercury-Catalytic pyrolysis-cold atomic absorption spectrophotometry. 1适用范围 HJ 923规定了测定土壤和沉积物中总汞

HJ 922-2017.Soil and sediment-Determination of polychlorinated biphenyls-Gas chromatography. 1适用范围 HJ 922规定了测定土壤和沉积物中多氯联苯的气相色谱法。 HJ 922适用于土壤和沉积物中7种指示性

HJ 921-2017.Soil and sediment-Determination of organochlorine pesticides-Gas chromatography. 1适用范围 HJ 921规定了测定土壤和沉积物中有机氯农药的气相色谱法。 HJ 921适用于土壤和沉积物中a -六

HJ 926-2017.Specifications and test procedures for automatic on-line monitoring of mercury in water. 1适用范围 HJ 926规定了汞水质自动在线监测仪的技术要求、性能指标及检测方法。 HJ 926适

HJ 75-2017.Specifications for continuous emissions monitoring of SO2, NOx, and particulate matter in the flue gas emitted from stationary sources. 1适用

HJ 928-2017.Internet of Things in Environmental Protection-Framework. 1范围 HJ 928规定了环保物联网的概念模型、体系结构和各个域及其实体的主要内容。 HJ 928适用于环保物联网系统设计和开发应用。使用者主要为从事环保物联网

HJ 924-2017.Technical requirement and test procedures for rapid COD photometric analyzer. 1适用范围 HJ 924规定了基于重铬酸钾快速消解-光度法原理的水中COD光度法快速测定仪(以下简称测定仪)的技术要求、