| 分光光度法快速测定硝、铵态氮的可行性研究 |
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| 引用本文： | 赵洁,王莉.分光光度法快速测定硝、铵态氮的可行性研究[J].现代农业科技,2011(6):42+45. |
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| 作者姓名： | 赵洁 王莉 |
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| 作者单位： | 山西师范大学生命科学学院,山西临汾,041004 |
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| 基金项目： | 国家科技支撑计划重点项目 |
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| 摘 要： | 用紫外分光光度法、靛酚蓝分光光度法测定北方4类土壤硝、铵态N的含量,并对测试条件进行可行性研究。结果表明:紫外分光光度法测定土壤硝态N时需反应30 min后进行测定,温度对紫外分光光度法硝态N测定值没有明显影响;靛酚蓝分光光度法分析土壤样品中的铵态N时,至少要放置10 h,并且要保持测定样品和制定工作曲线时的温度相差不大。
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| 关 键 词： | 硝态N 铵态N 紫外分光光度法 靛酚蓝分光光度法 |
Feasibility Study on NO3--N,NH4+-N Determination by Spectrophotometry Method |
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| Authors: | ZHAO Jie WANG Li |
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| Institution: | (College of Life Science,Shanxi Normal University,Linfen Shanxi 041004) |
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| Abstract: | NO3--N,NH4+-N contents of four kinds of soil samples from north were determined by uv-spectorophotometry and indophenol blue colorimetric and the feasibility of measure conditions were studied.The results showed that determination of soil NO3--N started after the reaction lasted 30 min.Effect of temperature on the measured values of NO3--N by uv-spectrophotometry was no significant.The samples needed to be placed at least 10 hours when NH4+-N content was determined by indophenol blue colorimetric,meanwhile,the temperature of samples and curve formulation must only have minor differences. |
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| Keywords: | NO3--N NH4+-N uv-spectrophotometry indophenol blue colorimetric |
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