| 第 34 卷第 2 期 |  | Vol. 34 No. 2 | | 2004 年 4 月 | Apr 2004 |
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所屬欄目：分析與測試
有機-無(wú)機復混肥料中有機質(zhì)含量測定方法的改進(jìn) |
| 劉惠言(湖南省產(chǎn)商品質(zhì)量監督檢驗所; 湖南長(cháng)沙) |
| 摘 要：在GB18877 2002《有機-無(wú)機復混肥料》的基礎上,規定稱(chēng)樣量范圍,改變氧化劑溶液的配制方式,用改進(jìn)的重鉻酸鉀容量法測定有機-無(wú)機復混肥料的有機質(zhì)含量,回收率達99.76%,相對標準偏差0.25～0.43%,準確度及重現性均優(yōu)于標準方法。 |
| 關(guān)鍵詞：有機-無(wú)機復混肥料; 有機質(zhì); 改進(jìn)法 |
| 中圖分類(lèi)號：TQ440.72 文獻標識碼：B 文章編號：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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