标准摘要
[中文适用范围]： 描述了校准图的制备以及将测试部分溶解在浓硫酸中并在热板上加热直至氢氟酸蒸发。 用浓盐酸处理残余物。 将溶液吸入乙炔/一氧化二氮火焰中，并用分光光度法测量钙空心阴极灯发出的 422.7 nm 线的吸收。 [外文原描述]： 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 acid. Aspiration of the solution into an acetylene/dinitrogen monoxide flame and spectrophotometric measurement of the absorption of the 422.7-nm line emitted by a calcium hollow cathode lamp.
英文名称Cryolite, natural and artificial — Determination of calcium content — Flame atomic absorption method