GB/T 17134-1997
Soil quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometry (English Version)
- Standard No.
- GB/T 17134-1997
- Language
- Chinese, Available in English version
- Release Date
- 1997
- Published By
- General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
- Latest
- GB/T 17134-1997
- Scope
- This standard specifies the silver diethyldithiocarbamate spectrophotometric method for the determination of total arsenic in soil. The detection limit of this standard method is 0.5mg/kg (calculated by weighing 1g sample). Antimony and sulfide have positive interference on the determination. Antimony below 300μg can be masked with KI-SnCl2. When the sample is oxidized and decomposed, the sulfur has been oxidized and decomposed by nitric acid and has no effect. A small amount of sulfide that may exist in the reagent can be absorbed and removed with lead acetate absorbent cotton.
GB/T 17134-1997 history
- 1997 GB/T 17134-1997 Soil quality--Determination of total arsenic--Silver diethyldithiocarbamate spectrophotometry
