| 浊点萃取光度法测定水样中亚硝酸根 |
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| 引用本文： | 丁宗庆,张琼瑶.浊点萃取光度法测定水样中亚硝酸根[J].化学研究与应用,2009,21(7). |
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| 作者姓名： | 丁宗庆 张琼瑶 |
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| 作者单位： | 1. 郧阳师范高等专科学校化学系,湖北,丹江口,442700
2. 郧阳医学院医用化学教研室,湖北,十堰,442000 |
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| 基金项目： | 湖北省教育厅科学技术研究项目 |
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| 摘 要： | A new method for the determination of trace nitrite by spectrophotometric after cloud point extraction was proposed.The effects of experimental conditions such as acidity,concentration of chromogenic reagent and surfactant,equilibration temperature and time on cloud point extraction were discussed.Under the optimum conditions,a good linear relationship was obtained in the range of 4.0～200 μg/L of the nitrite(r=0.9998),the detection limits of 0.43 μg/L.The recoveries fell in the range from 97.7% to 102.4% an...
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| 关 键 词： | 浊点萃取 分光光度法 亚硝酸根 分离富集 水样 |
Determination of trace amount of nitrite in water samples by spectrophotometric with cloud point extraction |
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| DING Zong-qing,ZHANG Qiong-yao.Determination of trace amount of nitrite in water samples by spectrophotometric with cloud point extraction[J].Chemical Research and Application,2009,21(7). |
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| Authors: | DING Zong-qing ZHANG Qiong-yao |
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| Institution: | 1.Department of Chemistry;Yunyang Teachers College;Danjiangkou 442700;China;2.Department of Comment Medicinal Chemistry;Yunyang Medical College;Shiyan 442000;China |
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| Abstract: | A new method for the determination of trace nitrite by spectrophotometric after cloud point extraction was proposed.The effects of experimental conditions such as acidity,concentration of chromogenic reagent and surfactant,equilibration temperature and time on cloud point extraction were discussed.Under the optimum conditions,a good linear relationship was obtained in the range of 4.0～200 μg/L of the nitrite (r=0.9998),the detection limits of 0.43 μg/L.The recoveries fell in the range from 97.7% to 102.4% and the relative standard deviations were between 1.8% and 3.2%.This method has been applied for the determination of nitrite in real water samples with satisfactory results. |
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| Keywords: | cloud point extraction spectrophotometry nitrite separation and enrichment water sample |
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