| 第 34 卷第 2 期 |  | Vol. 34 No. 2 | | 2004 年 4 月 | Apr 2004 |
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所属栏目：分析与测试
有机-无机复混肥料中有机质含量测定方法的改进 |
| 刘惠言(湖南省产商品质量监督检验所; 湖南长沙) |
| 摘 要：在GB18877 2002《有机-无机复混肥料》的基础上,规定称样量范围,改变氧化剂溶液的配制方式,用改进的重铬酸钾容量法测定有机-无机复混肥料的有机质含量,回收率达99.76%,相对标准偏差0.25～0.43%,准确度及重现性均优于标准方法。 |
| 关键词：有机-无机复混肥料; 有机质; 改进法 |
| 中图分类号：TQ440.72 文献标识码：B 文章编号：1009-9212(2004)02-0070-02 |
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| Improvement on the Determination of Organic Matter in Organic-inorganic Compound Fertilizers |
| LIU Hui-yan （Hunan Province Produce Commodity Quality Supervision Testing Institute; Changsha 410007; China） |
| Abstract：On the basis of the GB18877-2002 standard for organic-inorganic compound fertilizers, An improved protocol on the sample weight range and the oxidant-solution preparation were proposed for determination of the organic matter in twelve organic-inorganic compound fertilizers by potassium dichromate volumetry, giving a mean recovery of 99.76% and RSD values from 0.25% to 0.43%. The accuracy and reproducibility of the improved method are better than that of the standard method. |
| Key words：organic-inorganic compound fertilizers; organic matter; improved method |
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收稿日期：2003-12-18
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