ISO 2223-1972 标准详情
- 标准号:ISO 2223-1972
- 中文标题:工业用甲醛溶液:重金属(包括铁)极限测试
- 英文标题:formaldehyde solutions for industrial use; limit test for heavy metals (excluding iron)
- 标准类别:国际标准化组织标准ISO
- 发布日期:1972-11-15
The method detects only the heavy metals present in non-complex form, the sulphides of which are precipitated in acid solution. The method is not specific for any one heavy metal. The principle consists in conversion of heavy metal, such as lead and
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