| 碘量法测定硫化钠的方法改进 |
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| 引用本文： | 邹婕妤,冯俊婷.碘量法测定硫化钠的方法改进[J].硫酸工业,2013(6):38-41. |
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| 作者姓名： | 邹婕妤 冯俊婷 |
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| 作者单位： | [1]大冶有色金属股份有限公司冶炼厂,湖北黄石435005 [2]南化集团研究院,江苏南京210048 |
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| 摘 要： | 探讨了改进后的碘量法测定硫化钠时,称样量、沉淀剂用量及酸碱度等因素对分析结果的影响,并通过试验确定了最佳测定条件.试验表明,用改进后的方法与国标法测定试样进行比较,分析结果相符,精密度（n=7）小于或等于1.1％.同一批次样品,分离硫化钠后溶液中亚硫酸钠消耗碘标准滴定溶液的体积V3不变,可作为定值计算,方法简单,达到快速分析的目的.
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| 关 键 词： | 硫化钠 测定 快速分析 碘量法 改进 |
Improvement of determination of sodium sulphide content by iodimetry |
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| ZOU Jieyu,FENG Junting.Improvement of determination of sodium sulphide content by iodimetry[J].Sulphuric Acid Industry,2013(6):38-41. |
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| Authors: | ZOU Jieyu FENG Junting |
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| Affiliation: | 1. Smelter,Daye Nonferrous Metal Co. , Ltd. , Huangshi, Hubei,435005, China; 2. Research Institute of Nanjing Chemical Industry Group, Nanjing, Jiangsu, 210048, China) |
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| Abstract: | The factors influencing the analysis results by improved iodimetry for determination of sodium sulphide content , including sample weight, precipitant weight and pH value, are discussed. The optimum experimental conditions were determined by experiment. The test showed that the results by improved iodimetry were consistent with those by the national method with 1.1% or less of precision （n = 7）. For the same batch of samples, V3, the volume of the standard iodine solution consumed by solution of sodium sulfite after the separation of sodium sulphide could be calculated as a fixed value. The improved method led to a simple and rapid analysis. |
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| Keywords: | sodium sulphide content rapid analysis iodimetry improvement |
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