标准编号：ISO 21078-1:2008
中文名称：耐火制品中氧化硼（III）含量的测定 第1部分：陶瓷、玻璃和釉面用氧化材料中氧化硼（III）总量的测定
英文名称：Determination of boron (III) oxide in refractory products — Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes
发布日期：2008-01
标准范围
This part of ISO 21078 specifies methods of determining boron(lli) oxide in refractory products and raw materials, in mass fractions of 0,01 % or greater. It is applicable to the determination of total boron(lll) oxide in oxidic materials for ceramics, glass and glazes.The determination of boron(lll) oxide is carried out using one of the following four methods:a) alkaline titrimetry, which is applied to samples containing more than 0,5 % by mass of boron(lll) oxide;b) azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01 % by mass to 2,5 % by mass of boron(lll) oxide;c) curcumin absorption spectrophotometry (rothocyanine method), which is applied to samples containing from 0,01 % by mass to 1,0 % by mass of boron(lll) oxide;d) inductively coupled plasma atomic emission spectrometry (ICP-AES), which is applied to samples containing from 0,01 % by mass to 15 % by mass of boron(lll) oxide.NOTE 1 The method can be extended to 30 % boron(lll) oxide using modified oxidic fluxes NOTE 2 Interlaboratory test results for this part of ISO 21078 are given in Annex A.
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