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科技导报  2014 

肥料中水溶性钾含量测定的四苯硼酸钾重量法改进及国际标准制定

DOI: 10.3981/j.issn.1000-7857.2014.h1.003, PP. 32-38

Keywords: 肥料,水溶性钾含量,四苯硼酸钾重量法

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Abstract:

对肥料和土壤调理剂中水溶性钾含量测定应用最广泛的分析方法——四苯硼酸钾重量法进行系统研究与改进,取消了现有方法中添加甲醛以掩蔽NH4+的步骤。通过对标准物质和一系列有代表性的肥料样品的对比实验分析,验证了新方法具有更高的准确性和与原方法相当的精密度。经国际标准化组织肥料与土壤调理剂专业委员会推荐,由上海化工研究院牵头组织国内外14家分析实验室进行了实验室间比对,统计结果表明,新方法的适用性好且精密度高,因此将推荐其作为新国际标准分析方法。

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