| 气体扩散法测氨中几种流动注射扩展线性范围方式的比较及发酵液中氨态氮的测定 |
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| 引用本文： | 范世华,方肇伦.气体扩散法测氨中几种流动注射扩展线性范围方式的比较及发酵液中氨态氮的测定[J].分析科学学报,1994(4). |
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| 作者姓名： | 范世华 方肇伦 |
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| 作者单位： | 中国科学院沈阳应用生态研究所流动注射分析研究中心 |
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| 摘 要： | 本文以气体扩散法测氨为例，比较了三种流动注射扩展线性范围方法的性能；讨论了影响分析精度的因素。把微升进样在线稀释技术同气体扩散光度法结合，测定了农药发酵液中氨态氮的含量。方法的回收率为９３—１０６％，每小时可分析６０—８０个样。
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| 关 键 词： | 流动注射，生物发酵，氨的监测 |
Evaluation of the Performance of Three Flow Injection On-line Dilution Methods for Monitoring of Ammonium Nitrogen in Fermentation Solution by Gas Diffusion Spectrophotometry |
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| Pan Shihua, Fang Zhaolun.Evaluation of the Performance of Three Flow Injection On-line Dilution Methods for Monitoring of Ammonium Nitrogen in Fermentation Solution by Gas Diffusion Spectrophotometry[J].Journal of Analytical Science,1994(4). |
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| Authors: | Pan Shihua Fang Zhaolun |
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| Abstract: | The performances of three flow injection dilution procedures, based on gradient dilution, microliter sample dilution and varying diffusion membrane area were evaluated and compared for expansion of dynamic range in the determination of ammonium nitrogen by gas diffusion spectrophotometry. Factors affecting the precision of determination were discussed.The method based on microliter sample dilution was applied to monitoring of ammonium nitrogen in fermentation solutions. The recoveries for the method were 93 to106 %, sampling frequency was 60 80 /h. |
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| Keywords: | Flow injection Monitoring of Ammonium Biological fermentation |
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