標準號：BS EN ISO 21078-1-2008
中文標準名稱：耐火制品中氧化硼(III)的測定.陶瓷,玻璃和釉料用氧化材料的氧化硼(III)總量的測定
英文標準名稱：Determination of boron (III) oxide in refractory products -Part 1: Determination of total boron (III) oxide in oxidic materials for ceramics, glass and glazes
標準類型：Q40
發布日期：2008/9/30 12:00:00
實施日期：2008/9/30 12:00:00
中國標準分類號：Q40
國際標準分類號：81.080;81.040.01; 81.060.01
引用標準：ISO 31-0;ISO 836;ISO 3310-1;ISO 3696;ISO 6353-2;ISO 6353-3
適用范圍：This part of ISO 21078 specifies methods of determining boron(III) oxide in refractory products and rawmaterials, in mass fractions of 0,01 % or greater. It is applicable to the determination of total boron(III) oxide inoxidic materials for ceramics, glass and glazes.The determination of boron(III) 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(III) oxide;b) azomethine H absorption spectrophotometry, which is applied to samples containing from 0,01 % bymass to 2,5 % by mass of boron(III) oxide;c) curcumin absorption spectrophotometry (rothocyanine method), which is applied to samples containingfrom 0,01 % by mass to 1,0 % by mass of boron(III) oxide;d) inductively coupled plasma atomic emission spectrometry (ICP-AES), which is applied to samplescontaining from 0,01 % by mass to 15 % by mass of boron(III) oxide.NOTE 1 The method can be extended to 30 % boron(III) oxide using modified oxidic fluxes.NOTE 2 Interlaboratory test results for this part of ISO 21078 are given in Annex A.