HJ 1226-2021
Determination of Sulfide in Water Quality Methylene Blue Spectrophotometric Method (English Version)
- Standard No.
- HJ 1226-2021
- Language
- Chinese, Available in English version
- Release Date
- 2021
- Published By
- Professional Standard - Environmental Protection
- Latest
- HJ 1226-2021
- Scope
- This standard specifies the spectrophotometric determination of methylene grass contamination of sulfide in water. This standard is applicable to the determination of sulfur in surface water, ground water secondary chlorine and sewage, industrial wastewater and wash water. When the sampling volume is 200 ml and a 10mm nm light path colorimeter is used, the detection limit of the method is 0.01mgL and the lower determination limit is 0.04 mg/L; when a 30 mm light path colorimeter is used, the method detection limit is 0.003 mgL. The lower limit of determination is 0.012 mg/L. Note: The 30 mm area colorimeter is suitable for the lower area or the stool and the determination of Wang Benshou's Liang and seawater. The pretreatment method should be the "acidification-garlic drink-absorption" method.
HJ 1226-2021 Referenced Document
- HJ 164 Technical Specifications for Groundwater Environmental Monitoring
- HJ 442.3 Technical Specifications for Environmental Monitoring of Coastal Sea Areas Part III Water Quality Monitoring of Coastal Sea Areas
- HJ 493 Water quality.Technical regulation of the preservation and handling of samples
- HJ 91.1 Sewage Monitoring Technical Specifications
- HJ/T 91 Technical Specifications Requirements for Monitoring of Surface Water and Waste Water
HJ 1226-2021 history
- 2021 HJ 1226-2021 Determination of Sulfide in Water Quality Methylene Blue Spectrophotometric Method
