ISO 3391-1976 标准详情
- 标准号:ISO 3391-1976
- 中文标题:天然和人造冰晶石 钙含量的测定 火焰原子吸收法
- 英文标题:Cryolite, natural and artificial; Determination of calcium content; Flame atomic absorption method
- 标准类别:国际标准化组织标准ISO
- 发布日期:1976-09
Describes the preparation of the calibration graph and the dissolution of a test portion in concentrated sulphuric acid and heating on a hot-plate until the hydrofluoric acid has evaporated. Treatment of the residue with concentrated hydrochloric aci
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