| 高锰酸钾-乙二醛化学发光体系测定谷氨酸 |
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| 引用本文： | 樊雪梅,王书民.高锰酸钾-乙二醛化学发光体系测定谷氨酸[J].商洛师范专科学校学报,2014(4):46-48. |
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| 作者姓名： | 樊雪梅 王书民 |
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| 作者单位： | 商洛学院化学工程与现代材料学院/陕西省尾矿资源综合利用重点实验室,陕西商洛726000 |
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| 基金项目： | 基金项目：陕西省科技统筹创新工程计划项目（2012KTDZ02-02-02） |
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| 摘 要： | 建立了测定谷氨酸的化学发光新方法，确定了该方法的测定最佳条件，并研究了抑制体系的机理。在最佳条件下，谷氨酸浓度在2．0×10^-8-5．0×10^-5mol·L^-1范围内与相对发光强度成正比，方法的检出限为6．0×10^-9mol·L^-1，对1．0×10^-6mol·L^-1的谷氨酸平行测定9次，相对标准偏差为2．5％。该法用于味精产品中谷氨酸含量分析。
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| 关 键 词： | 流动注射 化学发光 高锰酸钾 乙二醛 谷氨酸 |
Determination of Glutamic Acid by Potassium Permanganate- glyoxal Chemiluminescence System |
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| FAN Xue-mei,WANG Shu-min.Determination of Glutamic Acid by Potassium Permanganate- glyoxal Chemiluminescence System[J].Journal of Shangluo Teachers College,2014(4):46-48. |
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| Authors: | FAN Xue-mei WANG Shu-min |
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| Institution: | (College of Chemical Engineering and Modem Materials, Shangluo University / Shaanxi Key Laboratory of Comprehensive Utilization of Tailings Resources, Shangluo 726000, Shaanxi) |
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| Abstract: | A novel flow injection chemiluminescence method was developed for the determination of glutamic acid, based on the inhibited effect of glutamic acid on the chemiluminescence reaction of potassium permanganate and glyoxal in the acidic medium. The optimum conditions and the possible inhibitory mechanism was also discussed. Under optimum conditions, the relative chemiluminescence intensity was linearly related to the concentration of glutamic acid in the range of 2.0×10^-8 -5.0×10^-5mol·L^-1 with a detection limit of 6.0×10^-9mol·L^-1, the RSD for measurement of 1.0×10^-6mol·L^-1 glutamic acid （n=9） is 2.5%. This method was applied to the determination of glutamic acid in monosodium glutamate samples with satisfatory results. |
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| Keywords: | flow injection chemiluminescence potassium permanganate glyoxal glutamic acid |
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