| 引用本文： |
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蒋治良,蒋治利,覃诚真.Au3+-Hg22+-Ce4+-对氯代苯羟乙酸催化偶联反应的[J].广西科学,1995,2(4):11-14. [点击复制]
- Jiang Zhiliang,Jiang Zhili,Qin Chenzhen.Studies on Derivation Oscillopolarography of Au3+-Hg22+ -Ce4+-p-Chlorophenylglycollic Acid Catalylic Reaction[J].Guangxi Sciences,1995,2(4):11-14. [点击复制]
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| 摘要: |
| 在0.8~2.0mol/L硫酸及90℃下,Au3+对Ce4+氧化Hg22+反应有强烈催化作用。用对氯代苯羟乙酸还原Ce(Ⅳ)中止反应,生成极谱活性物质对氯苯甲醛(Ep=-0.83Vvs.SCE)。用固定时间法建立检出限和测定范围分别为0.15ng/mL和0.30~4.5ng/mL金的催化反应-导数示波极谱分析法。矿样中痕量金的测定结果表明该法效果较好。 |
| 关键词: 催化反应 导数示波极谱法 金矿石 痕量分析 |
| DOI： |
| 投稿时间：1994-12-07 |
| 基金项目:国家自然科学基金,广西青年科学基金及广西师大青年基金 |
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| Studies on Derivation Oscillopolarography of Au3+-Hg22+ -Ce4+-p-Chlorophenylglycollic Acid Catalylic Reaction |
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Jiang Zhiliang1, Jiang Zhili2, Qin Chenzhen3
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| (1.Center of Computer & Analysis Testing, Guangxi Normal University, Sanlidian, Guilin, Guangxi, 541004;2.Water and Electricity Bureau of Quanzhou County, Quanzhou, Guangxi, 541500;3.Department of Chemistry, Guangxi Normal University, Sanlidian, Guilin, Guangxi, 541004) |
| Abstract: |
| A catalytic method with derivative oscillopolarographic for the determination of uhratrace amounts of gold was described based on the catalytic effect of gold (Ⅲ) on the redox reaction between Ce (Ⅳ) and Hg22+ in 0.8~2.0 mol/L sulphuric acid at 90℃.p-chlorophenylglycollic acid was quenching reagent. The direvative oscillopolarography was used to detect p-chlorobenzaldehyde produced from the reaction between p-chlorophenylglycollic acid and Ce (Ⅳ). A detection limit of 0.15 ng/mL and determination range from 0.3 to 4.5 ng/mL An were obtained.Trace gold in ores was analysed by this method with excellent results. |
| Key words: catalytic reaction direvative oscillopolarography gold ore trace analysis |
