ISO 4275-1977 工业用（包括食品）碳酸氢铵；砷含量测定；二乙基二硫代氨基甲酸银光度测定法
ISO 4275-1977 标准详情
- 标准号：ISO 4275-1977
- 中文标题：工业用（包括食品）碳酸氢铵；砷含量测定；二乙基二硫代氨基甲酸银光度测定法
- 英文标题：ammonium hydrogen carbonate for industrial use (including foodstuffs); determination of arsenic content; silver diethyldithiocarbamate photometric method
- 标准类别：国际标准化组织标准ISO
- 发布日期：1977-11-01
内容简介
Applicable to products having As contents more than 0.2 mg/kg. The principle consists in reduction of the element to arsine in a solution of silver diethyldithiocarbamate in pyridine. Photometric measurement of the purplish- red colour produced by th
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