HJ 634-2012
Soil.Determination of ammonium, nitrite and nitrate by extraction with potassium chloride solution-spectrophotometric methods (English Version)
- Standard No.
- HJ 634-2012
- Language
- Chinese, Available in English version
- Release Date
- 2012
- Published By
- Professional Standard - Environmental Protection
- Latest
- HJ 634-2012
- Scope
- This standard specifies the potassium chloride solution extraction-spectrophotometric method for the determination of ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen in soil. This standard is applicable to the determination of ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen in soil. When the sample amount is 40.0 g, the detection limits of this method for determining ammonia nitrogen, nitrite nitrogen, and nitrate nitrogen in soil are 0.10 mg/kg, 0.15 mg/kg, and 0.25 mg/kg respectively, and the lower detection limits are 0.40 mg/kg. kg, 0.60 mg/kg, 1.00mg/kg.
HJ 634-2012 Referenced Document
- HJ 168 Technical guidelines for formulation of environmental monitoring analysis method standards*， 2020-12-29 Update
- HJ 613 Soil.Determination of dry matter and water content.Gravimetric method
- HJ/T 166 Technical specification for soil environmental monitoring
- ISO/TS 14256-1 Soil quality - Determination of nitrate, nitrite and ammonium in field-moist-soils by extraction with potassium chloride solution - Part 1: Manual method
HJ 634-2012 history
- 2012 HJ 634-2012 Soil.Determination of ammonium, nitrite and nitrate by extraction with potassium chloride solution-spectrophotometric methods
