BS 4140-19-1986
氧化铝的试验方法.硼含量的测定

Methods of test for aluminium oxide. Determination of boron content

非常抱歉，我们暂时无法提供预览，您可以试试： 免费下载 BS 4140-19-1986 前三页，或者稍后再访问。

注意： 点击下载后，生成下载文件时间比较长，请耐心等待......

标准号

BS 4140-19-1986

发布日期

1986年02月28日

实施日期

1986年02月28日

废止日期

无

中国标准分类号

G13

国际标准分类号

71.100.10

发布单位

GB-BSI

被代替标准

BS 4140 Addendum No. 3-1974 Addendum No. 3 (1974) to BS 4140-1974 85/52368 DC

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).

BS 4140-19-1986系列标准