| 土壤全氮的快速测定 |
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| 引用本文： | 丘星初,刘国平,朱盈权.土壤全氮的快速测定[J].干旱环境监测,1990(1). |
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| 作者姓名： | 丘星初 刘国平 朱盈权 |
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| 作者单位： | 江西省赣州地区环境科学研究所，江西省赣州地区环境科学研究所
成都市82信箱 |
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| 摘 要： | 本方法是过硫酸盐氧化消化样品的基础上测定土壤中全氮的光度法.采用碱性过硫酸钾溶液(0.37mol/L K_2S_2O_3,0.375N NaOH)消化土壤样品,然后用百里酚光度法进行测定,具有准确、灵敏、快速、简便等优点,适用于常规和大量样品的分析.
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| 关 键 词： | 分光光度法 土壤样 全氮 |
RAPID DETERMINATION OF TOTAL NITROGEN IN SOIL |
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| Qiu Xing-Chu Liu Guo-Ping.RAPID DETERMINATION OF TOTAL NITROGEN IN SOIL[J].Arid Environmental Monitoring,1990(1). |
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| Authors: | Qiu Xing-Chu Liu Guo-Ping |
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| Abstract: | A method by which the total nitrogen(TN) in soil samples can be determined employing peroxydisufate oxidation is developed. A solution of 0.37 mol/ L K2S2O8-0.375N NaOH is adopted as the oxidizer,which made it possible to carry out alkaline peroxydisulfate oxidation for TN. The products of oxidation are nitrates, and it is measured spectrophotometrically by thymol. Good recoveries of TN are obtained. The method is excellent in terms of its simplicity ,Speed and efficiency in handling large number of samples. |
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| Keywords: | Rapid determination Total nitiogen Soil |
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