| 邻羟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,韩玉冰,周怀伟,陈永亨.邻羟基苯基重氮氨基偶氮苯分光 光度法测定痕量汞(Ⅱ)[J].分析试验室,2001,20(2):77-79. |
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| 作者姓名： | 曹小安 韩玉冰 周怀伟 陈永亨 |
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| 作者单位： | 广州师范学院化学系, |
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| 基金项目： | 广东省自然科学基金(980383)和广东省重点科技攻关项目(99M05301G) |
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| 摘 要： | 研究了邻羟基苯基重氮氨基偶氮苯(O-HDAA)与汞(Ⅱ)的显色反应。在TritonX-100存在下，于pH10.0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520nm处，表观摩尔吸光系数为1.74×105L
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| 关 键 词： | 邻羟基苯基重氮氨基偶氮苯 分光光度法 汞 水痕量分析 |
| 文章编号： | 1000-0720(2001)02-0077-03 |
Determination of Trace Amounts of Mercury by Spectrophotometric method with o-Hydroxybenzenediazoaminoazobenzene |
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| CAO Xiao-an.Determination of Trace Amounts of Mercury by Spectrophotometric method with o-Hydroxybenzenediazoaminoazobenzene[J].Chinese Journal of Analysis Laboratory,2001,20(2):77-79. |
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| Authors: | CAO Xiao-an |
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| Abstract: | The chromogenic reaction ofo-hydroxybenzenediazoaminoazobenzene(O-HDAA) with mercury was studied. In the presence of Triton X-100 and in a borax buffer soluton of pH 10.0, mercury(Ⅱ) reacted with O-HDAA to form a stable orange-red complex with molar ratio of 1∶2. The apparent molar absorptivity is 1.74×105 L.mol-1.cm-1 at the maximum absorption wave-length of 520 nm. Beer's law is obeyed in the concentration range of 0～600 μg/L 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: | o Hydroxybenzenediazoaminoazoben zene Spectrophotometry Mercury |
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