BS 4140-19-1986 氧化铝的试验方法.硼含量的测定

标准号：BS 4140-19-1986
中文标准名称：氧化铝的试验方法.硼含量的测定
英文标准名称：Methods of test for aluminium oxide. Determination of boron content
标准类型：G13
发布日期：1986/2/28 12:00:00
实施日期：1986/2/28 12:00:00
中国标准分类号：G13
国际标准分类号：71.100.10
适用范围：This International Standard specifies a curcumin spectrophotometric method for the determination of the boron content of aluminium oxide primarily used for the production of aluminium. The method is applicable to boron contents, expressed as boron oxide (B2O3), greater than 0,000 6 % (i.e. 0,000 2 % expressed as boron (B)). NOTE —The sensitivity of the method, as may be gathered from the calibration curve, is in fact higher. In the case of a very low blank reading, and with sufficiently sensitive apparatus, the lower limit of application of the method may be extended to 0,000 08 % of boron oxide (B2O3), corresponding to 0,000 025 % of boron (B).