| Kinetic-spectrophotometric determination of free cyanide by stopped-flow reversed flow injection analysis |
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| 作者姓名： | Ma Huichang Liu Jingfu |
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| 作者单位： | Ma Huichang，Liu JingfuResearch Center for Eco-Environmental Sciences，Chinese Academy of Sciences，Beijing 100085，China |
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| 基金项目： | This study was supported by the National Natural Science Foundation of China |
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| 摘 要： | A stopped-flow reversed flow injection method for the determination of free cyanide is proposed. Pyridine-barbituric acid mixture is injected in the flow system as reagent to form the colour species with cyanide. The flow is stopped when the reagent zone comes in the flow cell, where absorbance-time data are collected at 580nm wavelength. The linear range of the determination is 0.1 -10μg/ml CN-. The sampling rate is 60h-1 and the relative standard deviation is 1.6% (n=16) at 5.0 μg/ml CN-1 level. With satisfactory results, the proposed method was applied to the determination of free cyanide in wastewater without sample pretreatment.
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| 关 键 词： | kinetic analysis stopped-flow reversed flow injection system free cyanide wastewater. |
| 收稿时间： | 1992/1/20 0:00:00 |
Kinetic-spectrophotometric determination of free cyanide by stopped-flow reversed flow injection analysis |
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| Ma Huichang,Liu Jingfu.Kinetic-spectrophotometric determination of free cyanide by stopped-flow reversed flow injection analysis[J].Journal of Environmental Sciences,1993,5(3):367-372. |
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| Authors: | Ma Huichang Liu JingfuResearch Center for Eco-Environmental Sciences Chinese Academy of Sciences Beijing China |
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| Institution: | Ma Huichang,Liu JingfuResearch Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China |
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| Abstract: | |
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| Keywords: | kinetic analysis stopped-flow reversed flow injection system free cyanide wastewater |
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