| 光谱学与光谱分析 |
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| Determination of Trace Amounts of Mercury by Spectrophotometric Method with 2-Hydroxy-5-Sulfobenzenediazoaminoazobenzene |
| CAO Xiao-an, CHEN Yong-heng, LIN Hua-min* |
| 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 1.67×105·L mol-1·cm-1 with the maximum absorption wavelength of 519 nm. Beer’s law was obeyed in the concentration range of 0-600 μg·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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Received: 2002-08-16
Accepted: 2002-12-16
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Corresponding Authors:
LIN Hua-min
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| Cite this article: |
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CAO Xiao-an,CHEN Yong-heng,LIN Hua-min. Determination of Trace Amounts of Mercury by Spectrophotometric Method with 2-Hydroxy-5-Sulfobenzenediazoaminoazobenzene [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(04): 474-476.
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http://www.gpxygpfx.com/EN/Y2004/V24/I04/474 |
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