| 双波长标准加入法同时测定水中硝酸盐和亚硝酸盐 |
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| 引用本文： | 于少明 陆亚玲. 双波长标准加入法同时测定水中硝酸盐和亚硝酸盐[J]. 环境化学, 1996, 15(5): 463-466 |
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| 作者姓名： | 于少明 陆亚玲 |
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| 作者单位： | 合肥工业大学化工学院!合肥230009 |
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| 摘 要： | 本文应用双波长标准加入法同时测定了硝酸盐和亚硝酸盐，在研究硝酸盐和亚硝酸盐紫外光谱的基础上，精确选择亚硝酸盐等吸收点波长２０２．５ｎｍ，２１６．５ｎｍ为测定波长。亚硝酸盐含量回归方程经推导得Ｃ＝－３．８４１＋１５６．６Ａ，相关系Ｒ＝１．０００。将该法用于合成样品及实际水样分析，所得结果较满意。
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| 关 键 词： | 双波长 标准加入法 硝酸盐 亚硝酸盐 水质监测 |
STUDY ON SIMULTANEOUS DETERMINATION OF NITRATE AND NITRITE IN WATER BY DUAL- WAVELENGTH STANDARD ADDITION METHOD |
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| Yu Shaaming Lu Yaltng. STUDY ON SIMULTANEOUS DETERMINATION OF NITRATE AND NITRITE IN WATER BY DUAL- WAVELENGTH STANDARD ADDITION METHOD[J]. Environmental Chemistry, 1996, 15(5): 463-466 |
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| Authors: | Yu Shaaming Lu Yaltng |
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| Abstract: | In this paper,the dual-wavelength standard addition method was applied to simultaneous determination of nitrate and nitrite. On the basis of studying the ultraviolet absorption spectra of nitrate and nitrite, the wavelengths at isoabsorptive points of nitrite, 202. 5nm and 216- 5nm, were accurately selected as the measuring wavelengths. The li near regression equation of nitrite content was developed as C= - 3. 841 + 156- 6A, and the correlation coefficient R=1. 000. By this method , nitrate and nitrite in synthetic samples and practical water samples were determined simultaneously with satisfactory results. |
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| Keywords: | dual-wavelength spectrophotometry standard addition method nitrate nitrite. |
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