ISO 2226-1972 标准详情
- 标准号:ISO 2226-1972
- 中文标题:工业用甲醛溶液 铁含量的测定 2,2'-联吡啶光度法
- 英文标题:Formaldehyde solutions for industrial use; Determination of iron content; 2,2'- Bipyridyl photometric method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1972-12-01
The specified method is applicable to the detection of Fe contents less than 0, 0004 % (m/m). The principle consists in conversion of any iron present into the sulphate by evaporation to dryness in the presence of sulphuric acid, and reduction of iro
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