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| Ag+-双硫腙-CN-体系分光光度法测定痕量氰化物 |
| Study on the spectrophotometric determination of trace cyanide with Ag+-DZ-CN- system |
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| DOI：10.3969/j.issn.1671-5322.2002.01.017 |
| 中文关键词: 氰化物 水 废水 分光光度法 |
| 英文关键词: cyanide water wastewater spectrophotometry |
| 基金项目: |
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| 摘要点击次数: 6401 |
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| 中文摘要: |
| 研究了在pH=9左右的氨水-氯化铵介质中,Ag+能与双硫腙的四氯化碳溶液形成络合物,加入氰根后形成Ag+-双硫腙-CN-的三元体系,借此建立了测定痕量CN-的分光光度法.线性范围为0.5～4.0 μg/25 mL,检测限为2.8×10-10 g/L.方法简单快速,用于测定水样中CN-含量,结果满意. |
| 英文摘要: |
| In this paper a highly sensitive spectrophotometry was developed for the determination of cyanide,based on the formation of a ternary complex of Ag(Ⅰ) cyanide dithizone in a carbon tetrachloride phase and in a NH 3- NH 4Cl buffer solution of pH 9.The detection wavelength was 470 nm and the linear range of determination was 0.5～4.0 μg/25 mL.The detection limit was 2.8×10 -10 g/L. |
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