| 离子色谱法测定土壤中的硝态氮 |
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| 引用本文： | 刘 帅,吕 亮.离子色谱法测定土壤中的硝态氮[J].农业工程,2011,1(3):61-64. |
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| 作者姓名： | 刘 帅 吕 亮 |
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| 作者单位： | 济南市农业质量检测中心，济南250002 |
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| 基金项目： | 山东省质量技术监督局《关于申报2010年山东省地方标准制修订项目计划的通知》 |
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| 摘 要： | 该文建立了采用离子色谱作为检测手段的土壤硝态氮含量测定方法。分析比较了不同的样品处理条件，确立了以0.01molL氯化钙溶液作为提取剂，液样比例1∶5（VW），20～25℃水浴振荡30min，结合以氢氧化钾溶液为淋洗液，阴离子交换柱分离，电导检测器检测的离子色谱检测手段。该方法的精密度及准确度试验结果显示其适用于大部分类型土壤中硝态氮含量的测定。
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| 关 键 词： | 土壤 硝态氮 离子色谱 |
Determination of Soil Nitrate Nitrogen Ion Chromatography |
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| Liu Shuai and Lv Liang.Determination of Soil Nitrate Nitrogen Ion Chromatography[J].Agricultural Engineering,2011,1(3):61-64. |
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| Authors: | Liu Shuai and Lv Liang |
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| Institution: | (Test Center for Agriculture Quality of Jinan,Jinan 250002,China) |
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| Abstract: | This paper was established a method to analyze the nitrate nitrogen content in soil by ion chromatography.The different sample treating conditions were compared and then an optimized method was built.Soil samples were extracted by 0.01 molL calcium chloride solution in a sampleextraction ratio（VW）of 1∶5 with oscillating water bath for 30min in 20～25℃.Then the nitrate nitrogen was separated by anion exchange chromatography with KOH as elution buffer，and then detected by electrical conductivity detector.The results of accuracy and exactitude experiments showed that this method could be used to determination of nitrate nitrogen in most kinds of soil. |
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