BS 4140-22-1980 氧化铝试验方法.第22部分:锰含量的测定
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标准号:BS 4140-22-1980
中文标准名称:氧化铝试验方法.第22部分:锰含量的测定
英文标准名称:Methods of test for aluminium oxide - Determination of manganese content
标准类型:G13
发布日期:1980/4/30 12:00:00
实施日期:1980/4/30 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 flame atomic absorp-tion method for the determination of the manganese con-tent of aluminium oxide primarily used for the production of aluminium.
The method is applicable to products of which the manga-nese content, expressed as Mn, is between 0,000 2 and 0,005 % (m/m) (0,000 258 and 0,006 46 % (m/m), express-ed as MnO).
NOTE—If the apparatus available does not have a sufficient sensi-tivity for the lower contents of manganese, it is recommended that there should be prior extraction of the manganese, by the method specified in annex A.
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