ISO 11436:1993 镍和镍合金.硼总含量的测定.分子吸收光谱计法计算

标准编号：ISO 11436:1993

中文名称：镍和镍合金.硼总含量的测定.分子吸收光谱计法计算

英文名称：Nickel and nickel alloys — Determination of total boron content — Curcumin molecular absorption spectrometric method

发布日期：1993-08

标准范围

规定方法的原理是将试验部分溶解在盐酸和硝酸中，通过在不低于290°C的温度下用磷酸和硫酸将样品溶液发烟，分解抗硼化合物（例如氮化硼），在缓冲醋酸和硫酸介质中形成硼姜黄素络合物，并在543 nm的分子吸收光谱仪中测量供试品溶液的吸光度。适用于总硼含量在4 g/t至240 g/t范围内的镍和镍合金。

The principle of the method specified is dissolving a test portion in hydrochloric and nitric acids, decomposing resistant boron compounds (e.g. boron nitrides) by fuming the sample solution with phosphoric and sulfuric acids at not less than 290 °C, forming the boron curcumin complex in a buffered acetic acid and sulfuric acid medium, and measuring the absorbance of the test solution in a molecular absorption spectrometer at 543 nm. Applies to nickel and nickel alloys having a total boron content in the range of 4 g/t to 240 g/t.

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