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本文为美国钻石公司烧碱分析方法中杂质分析部分。该部分包括硫酸钠、氯酸钠、钙、镁、二氧化硅、镍、铜等项目。在方法中。对于每个项目。根据其范围一般提出两种分析方法,从而保证了分析结果的准确性。目前,由于国内烧碱质量的提高及环保卫生对食品添加剂质量规格的要求,现行烧碱质量标准及分析方法已远远满足不了要求。该译文介绍了烧碱中杂质的微量分析方法。文中对SO_4采用比浊法;对Fe~、CIO_3~-、Ni~、Cu~采用分光光度法。对每一种方法提出了方法的实质、操作步骤、注意事项、测定范围及分析误差。因此,对从事烧碱工作者具有一定的参考价值。
This article is an analysis of impurities in the American diamond company caustic soda analysis method. This section includes sodium sulfate, sodium chlorate, calcium, magnesium, silica, nickel, copper and other items. In the method. For each project. According to its scope, two analysis methods are generally proposed to ensure the accuracy of the analysis results. At present, due to the improvement of the quality of caustic soda in China and the requirements of environmental sanitation on the quality standards of food additives, the current caustic soda quality standards and analytical methods have far failed to meet the requirements. This translation describes the microanalysis of impurities in caustic soda. In this paper, turbidimetric method is adopted for SO_4, and spectrophotometry is used for Fe_, CIO_3 ~ -, Ni ~, Cu ~. For each method, the essence of the method, operation steps, precautions, measurement range and analysis error are proposed. Therefore, caustic soda workers engaged in a certain reference value.