GB/T 7466-1987 《Water quality--Determination of total chromium》 Related products
This standard specifies a method for the determination of total chromium content in ground water and industrial wastewater, mainly by oxidation of trivalent chromium to hexavalent chromium and using the diphenylcarbazide Spectrophotometric method, spectrophotometry. The applicable measurement range is 0.004mg/L to 1.0mg/L. This method uses hexavalent chromium and Color developing reagent, chromogenic agent to generate purplish-red compounds under acidic conditions for photometric determination. Interfering substances such as iron, molybdenum, vanadium, etc. may affect the results, so necessary treatment needs to be carried out before determination.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active |
|---|---|
| CCS | Z16 | ICS | 13.060 |
| Release Date | 1987-03-06 00:00:00 | Implementation Date | 1987-08-01 00:00:00 |
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$ 4703.00 -
$ 3149.00 -
$ 1516.00 -
$ 1563.00 -
$ 786.00 -
$ 3149.00
Extended reading
- 1GB/T 7467-1987《Water quality--Determination of chromium(Ⅵ)--1，5 Diphenylcarbohydrazide spectrophotometric method》
- 2GB/T 7469-1987《Water quality--Determination of the total mercury--Potassium permanganate-pootassium peralfate descomposed method--Dithizone spectrophotometric method》
- 3GB/T 7470-1987《Water quality--Determination of lead--Spectrophotometric method with dithizone》
- 4GB/T 7471-1987《Water quality--Determination of cadmium--Spectrophotometric method with dithizone》
- 5GB/T 7472-1987《Water quality--Determination of zinc--Spectrophotometric method with dithizone》
- 6GB/T 7473-1987《Water quality--Determination of copper--2，9-dimethy-1，10-phenanthroline spectrophotometric method》
- 7GB/T 7474-1987《Water quality--Determination of copper--Sodium diethyldithiocabamate spectrophotometric method》
- 8GB/T 7478-1987《Water quality--Determination of ammonium--Distillation and titration method》
- 9GB/T 7479-1987《Water quality--Determination of ammonium--Nessler’s reagent colorimetric method》
- 10GB/T 11898-1989《Water quality--Determination of free chlorine and total chlorine--Spectrophotometric method using N，N-diethyl-1，4-phenylenediamine》