HJ 550-2009
Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry (English Version)
- Standard No.
- HJ 550-2009
- Language
- Chinese, Available in English version
- Release Date
- 2009
- Published By
- Professional Standard - Environmental Protection
- Status
- 2015-07
- Replace By
- HJ 550-2015
- Latest
- HJ 550-2015
- Scope
- This standard specifies the 5-chloro-2-(pyridylazo)-1,3-diaminobenzene spectrophotometric method for the determination of total cobalt in water. This standard is applicable to the determination of total cobalt in surface water, groundwater, industrial wastewater and domestic sewage. Without pre-enrichment, when the sampling volume is 10ml, the detection limit of the method is 0.007mg/L, the lower limit of determination is 0.02mg/L, and the upper limit of determination is 0.16mg/L. After pre-enrichment, the method detection limit can be reduced by 50 times.
HJ 550-2009 history
- 2015 HJ 550-2015 Water quality.Determination of cobalt.5-Cl-PADAB Spectrophotometry
- 2009 HJ 550-2009 Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry
