| 光谱学与光谱分析 |
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| Study and Spectrophotometric Determination of Trace Silver with Iodide-Victoria Pure Blue BO System |
| SHI Wen-jian, XU Fei, YU Yun |
| College of Urban Construction, University of Shanghai for Science and Technology, Shanghai 200093, China |
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Abstract Analytical properties and spectra of naphthyl diphenymethane basic dyes and associated complexes of dye with [AgI2]- was studied. A new method for the spectrophotometric determination of trace amount of silver was developed. The method was based on the Victoria Pure Blue BO reacted with [AgI2]- to form blue associated complex in the buffer medium of H3PO4-NaH2PO4. The spectrophotometric measurements were directly carried out at 574 nm, the apparent molar absorptivity of associated complex was 7.25×104 L·mol-1·cm-1. The Beer’s law was obeyed in the range of 4-250 μg·L-1. The recoveries were in the range of 97.0%-98.3%. RSD was 2.7%. The method has been used to determination of trace silver in river water with satisfactory results.
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Received: 2003-10-18
Accepted: 2003-12-10
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Corresponding Authors:
SHI Wen-jian
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| Cite this article: |
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SHI Wen-jian,XU Fei,YU Yun. Study and Spectrophotometric Determination of Trace Silver with Iodide-Victoria Pure Blue BO System[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(05): 765-767.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I05/765 |
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