| 分光光度法测定痕量亚硝酸根 |
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| 引用本文： | 朱明霞 王君. 分光光度法测定痕量亚硝酸根[J]. 高师理科学刊, 2000, 20(1): 37-38,51 |
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| 作者姓名： | 朱明霞 王君 |
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| 作者单位： | [1]黑河师专 [2]黑化集团公司脲素厂 |
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| 摘 要： | 研究了一种简单快捷、选择性好、准确性高、精密度好的痕量亚硝酸根的光度分析法．该法基于在稀盐酸介质中甲基紫与亚硝酸根的亲电取代反应，于570nm处测定甲基紫吸光度的减少（△A）．亚硝酸根的浓度在1～20μg／25mL，范围内与△A成线性关系．此方法选择性好、灵敏度高，可用于环境水样和土壤中亚硝酸根的测定．
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| 关 键 词： | 分光光度法 痕量 亚硝酸根 |
Rapid Spectrophotometric Determination of Trace Amounts of NO_2~1 |
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| Zhu Mingxia, Che Wenshi ,Wang Jun. Rapid Spectrophotometric Determination of Trace Amounts of NO_2~1[J]. Journal of Science of Teachers＇College and University, 2000, 20(1): 37-38,51 |
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| Authors: | Zhu Mingxia Che Wenshi Wang Jun |
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| Affiliation: | Zhu Mingxia; Che Wenshi ;Wang Jun(Heihe Junior Teachers College) (Heihua Group Chmpany) |
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| Abstract: | A higher sensitivity spectrophotometric method has been developed for deterdrination of trace amounts of NO-2 besed on the reaction of Methyl violet and NO-2 in diluent HCl, and the diminish of absorption of Methyl riolet ditermined at 570 nm. A linear relation between △A and concentration of NO-2 in the range of 1 to 20 μg/mL. The method is simple, rapid and accurate. The metiod is used to determine NO-1 in surroundings water and siol. |
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| Keywords: | Spectrophotometric Trace amount NO_2~1 |
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