| 光谱学与光谱分析 |
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| Determination of Trace Manganese in Mongolian Medicine by Methylthymol Blue-Mn(Ⅱ)-H2O2 Catalytic System |
| WU Yun, LI Jing-feng, Garidi |
| Department of Chemistry, Inner Mongolia Normal University, Huhhot 010022, China |
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Abstract A new catalytic kinetic spectrophotometry method for the determination of trace manganese based on the oxidation reaction of H2O2 with methylthymol blue in Na2B4O7-NaOH medium has been developed. The range of the determination range was 0.20-40.00 μg·L-1. The apparent activation energy and apparent rate constant were 73.24 kJ·mol-1 and 5.62×10-4·s-1, respectively, and the detection limit was 6.4×10-10 g·mL-1. The method has been used to determine trace manganese in Mongolian medicine with satisfactory result.
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Received: 2003-07-25
Accepted: 2003-12-22
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Corresponding Authors:
WU Yun
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| Cite this article: |
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WU Yun,LI Jing-feng,Garidi. Determination of Trace Manganese in Mongolian Medicine by Methylthymol Blue-Mn(Ⅱ)-H2O2 Catalytic System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(12): 1652-1654.
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https://www.gpxygpfx.com/EN/Y2004/V24/I12/1652 |
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