ISO 804:1976 主要用于制铝的氧化铝.分析用溶液的制备.碱熔化法

标准编号：ISO 804:1976

中文名称：主要用于制铝的氧化铝.分析用溶液的制备.碱熔化法

英文名称：Aluminium oxide primarily used for the production of aluminium — Preparation of solution for analysis — Method by alkaline fusion

发布日期：1976-09

标准范围

化学分析主溶液的制备程序首先要求测试部分与碳酸钠和硼酸的混合物或碳酸钠和四硼酸钠的混合物进行碱性融合。随后在过量硝酸中溶解熔融物质，并将适当的等分试样部分调节至pH 2。取代ISO建议R804/1968。

The procedure for the preparation of a principal solution for chemical analysis requires at first an alkaline fusion of the test portion, either with a mixture of sodium carbonate and boric acid or with a mixture of sodium carbonate and sodium tetraborate. Subsequent dissolution of the molten mass in an excess of nitric acid and adjustment of an appropriate aliquot portion to pH 2. Replaces ISO Recommendation R804/1968.

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