| 紫外分光光度法测定蔬菜中硝酸盐含量 |
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| 引用本文： | 曹书杰.紫外分光光度法测定蔬菜中硝酸盐含量[J].南阳师范学院学报,2008,7(3):53-55. |
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| 作者姓名： | 曹书杰 |
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| 作者单位： | 南阳师范学院化学与制药工程学院,河南,南阳473061 |
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| 摘 要： | 基于硝酸盐在207．38nm处有强烈吸收，且干扰少，在pH=7中性条件下，建立了用紫外分光光度法测定蔬菜中的硝酸盐含量的方法。此法测定的结果表明回收率在95．1％～100．9％之间，相对标准偏差为1．55％～4．14％。操作方法简便．适用于蔬菜中的硝酸盐含量的测定。
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| 关 键 词： | 硝酸盐 蔬菜 紫外分光光度法 |
| 文章编号： | 1671-6132(2008)03-0053-02 |
| 修稿时间： | 2007年12月13 |
Determination of nitrate in the vegetable by ultroriolet spectroscope |
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| CAO Shu-jie.Determination of nitrate in the vegetable by ultroriolet spectroscope[J].Journal of Nanyang Teachers College,2008,7(3):53-55. |
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| Authors: | CAO Shu-jie |
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| Institution: | CAO Shu-jie( School of Chemistry and Pharmacy Engineering, Nanyang Normal University, Nanyang 473061, China) |
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| Abstract: | The new method to the determination of nitrate in the vegetable was established by ultraviolet spectroscope at pH = 7 on the basis of strong absorption of nitrate at 207.38 nm and little interference of some ions. The recovery of the determination method varied from 95.1% to 100.9%. Detection limit was 1.55% to 4.14%. The method was suitable for the determination of the different content nitrate in the vegetable. |
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| Keywords: | nitrate vegetable ultroriolet spectroscope |
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