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测定矿石中少量硼的光度法很多,但往往须在浓硫酸介质中发色,而矿样碱熔引入多量的盐类和洗涤坩埚用水给分析带来不便,或者需要繁琐的分离手续.我所目前采用的甲亚胺-H酸光度法,发色需二小时以上,吸光度才趋近最大值. 用硼氟酸根离子选择性电极测定硼的报导不少,并已应用于硅、玻璃、氧化铝-碳化硼、钢铁等物料中硼的测定,但尚未见用于矿石分析的报导.我们的试验工作表明:本法用于多金属矿石中的少量硼的测定,可获得令人满意的结果.
There are many spectrophotometric methods for the determination of a small amount of boron in ore, but often it is necessary to develop color in concentrated sulfuric acid medium. However, it is inconvenient to introduce large amounts of salt into alkali and wash crucible water for analysis, or complicated procedures are required. At present, the colorimetric method of azomethine-H is used, and the color will take more than two hours until the absorbance approaches the maximum value. There are a lot of reports on the determination of boron by the boron-fluoride ion selective electrode and has been applied to silicon, glass, Aluminum - boron carbide, steel and other materials in the determination of boron, but has not been reported for the ore analysis reported that our work shows that: This method for the determination of a small amount of poly-metal ore boron can be satisfactory results .