| 2-羟基-5-磺酸基苯基重氮氨基偶氮苯分光光度法测定痕量汞(Ⅱ) |
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| 引用本文： | 曹小安,陈永亨,林华敏.2-羟基-5-磺酸基苯基重氮氨基偶氮苯分光光度法测定痕量汞(Ⅱ)[J].光谱学与光谱分析,2004,24(4):474-476. |
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| 作者姓名： | 曹小安 陈永亨 林华敏 |
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| 作者单位： | 广州大学生物与化学工程学院,广东,广州,510405 |
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| 基金项目： | 广东省自然科学基金项目 (980 383)，广东省重点科技攻关项目 (99M0 530 1G)资助 |
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| 摘 要： | 研究了 2 羟基 5 磺酸基苯基重氮氨基偶氮苯 (HSDAA)与汞 (Ⅱ )的显色反应。在TritonX 10 0存在下 ,于pH 10 30的硼砂 氢氧化钠缓冲溶液中 ,汞 (Ⅱ )与试剂形成 1∶2的稳定橙红色配合物 ,其最大吸收波长位于 5 19nm处 ,表观摩尔吸光系数为 1 6 7× 10 5L·mol- 1 ·cm- 1 。汞 (Ⅱ )在 0～ 6 0 0 μg·L- 1 之间符合朗伯 比尔定律。该法直接应用于水样中痕量汞的测定。
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| 关 键 词： | 分光光度法 2-羟基-5-磺酸基苯基重氮氨基偶氮苯 汞 |
| 文章编号： | 1000-0593(2004)04-0474-03 |
| 修稿时间： | 2002年8月16日 |
Determination of Trace Amounts of Mercury by Spectrophotometric Method with 2-Hydroxy-5-Sulfobenzenediazoaminoazobenzene |
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| Xiao-an Cao,Yong-heng Chen,Hua-min Lin.Determination of Trace Amounts of Mercury by Spectrophotometric Method with 2-Hydroxy-5-Sulfobenzenediazoaminoazobenzene[J].Spectroscopy and Spectral Analysis,2004,24(4):474-476. |
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| Authors: | Xiao-an Cao Yong-heng Chen Hua-min Lin |
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| Institution: | Biology and Chemistry Engineering Institute, Guangzhou University, Guangzhou 510405, China. |
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| Abstract: | The chromogenic reaction of 2-hydroxy-5-sulfobenzenediazoaminoazobenzene (HSDAA) with mercury was studied. In the presence of Triton X-100 and in a borax-buffer solution of pH 10.30, mercury(II) reacted with HSDAA to form a stable orange-red complex with molar radio of 1:2. The apparent molar absorptivity was 1.67 x 10(5) x L mol(-1) x cm(-1) with the maximum absorption wavelength of 519 nm. Beer's law was obeyed in the concentration range of 0-600 microg x L(-1) for Hg(II). The method was applied to the determination of trace amounts of mercury in water with satisfactory results. |
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| Keywords: | Spectrophotometry 2-hydroxy-5-sulfobenzenediazoaminoazobenzene Mercury |
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