标准摘要
[中文适用范围]： 该方法的原理是将供试品溶解在盐酸和硝酸中，用不低于290℃的磷酸和硫酸对样品溶液进行熏蒸，分解抗硼化合物（如氮化硼），在缓冲液中形成硼姜黄素络合物。 乙酸和硫酸介质，用分子吸收光谱仪于543 nm处测定试液的吸光度。 适用于总硼含量在4克/吨至240克/吨范围内的镍和镍合金。 [外文原描述]： 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.
英文名称Nickel and nickel alloys — Determination of total boron content — Curcumin molecular absorption spectrometric method