標準號：BS 4140-19-1986
中文標準名稱：氧化鋁的試驗方法.硼含量的測定
英文標準名稱：Methods of test for aluminium oxide. Determination of boron content
標準類型：G13
發布日期：1986/2/28 12:00:00
實施日期：1986/2/28 12:00:00
中國標準分類號：G13
國際標準分類號：71.100.10
適用范圍：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).