光谱学与光谱分析 |
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Study on Determination of Trace Nitrite and Reaction Mechanism by Two-Wavelength Negative Absorption-Catalytic Spectrophotometry |
ZI Yan-qin, LU Hao-miao |
Department of Chemistry, Huaibei Coal Teachers College, Huaibei 235000, China |
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Abstract A new method was proposed for the determination of trace nitrite by two wavelength negative absorption catalytic spectrophotometry based on the catalysis of nitrite on the oxidation fading reaction of acridine orange by potassium bromate in phosphoric acid medium. The additive value of negative absorbances at two wavelengths was linear to the nitrite concentration in the range of 1.0×10-5-5.0×10-7 mol·L-1. The method has been used to the determination of nitrite in environment water sample with satisfactory result.
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Received: 2004-08-03
Accepted: 2004-12-25
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Corresponding Authors:
ZI Yan-qin
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Cite this article: |
ZI Yan-qin,LU Hao-miao. Study on Determination of Trace Nitrite and Reaction Mechanism by Two-Wavelength Negative Absorption-Catalytic Spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(01): 137-139.
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URL: |
https://www.gpxygpfx.com/EN/Y2006/V26/I01/137 |
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