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目前铝合金中硼量的测定,大多采用洋红比色法和蒸馏分离—姜黄素比色法.前者灵敏度及准确度均较低,需要在浓硫酸条件下进行发色,操作非常不便.而后者需经繁杂的分离手续,分析周期较长,且使用有机试剂污染环境.近十年来,离子选择性电极在分析化学方面的应用发展很快.随着氟硼酸根电极的研制成功,国内外已使用该电极测定了钢、氧化铝—碳化硼、单晶硅、钛合金及高温合金中的硼.本文采用氟硼酸根电极对铝合金
At present, the determination of boron in aluminum alloy mostly adopts the method of magenta colorimetry and distillation separation - curcumin colorimetry.The former has lower sensitivity and accuracy and needs to be colored under the condition of concentrated sulfuric acid, which is very inconvenient to operate. Subject to complicated separation procedures, the analysis cycle is longer, and the use of organic reagents to pollute the environment.In the past ten years, the application of ion selective electrode in the development of analytical chemistry developed rapidly.With the successful development of fluoroborate electrode, both at home and abroad The electrode was used to measure boron in steel, alumina-boron carbide, monocrystalline silicon, titanium alloy and superalloy.By fluoroborate electrode,