| 光谱学与光谱分析 |
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| Determination of Trace Manganese by Non-Organic Solvents Extraction Catalytic Spectrophotometry in Mn(Ⅱ)-H2O2-EBT-PEG-2000 System |
| SUN Deng-ming,FANG Hua-cai |
| Department of Chemistry, Huaibei Coal Industry Teachers College, Huaibei 235000, China |
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Abstract A new non-organic solvents extraction catalytic spectrophotometric method for the determination of trace amounts of manganese was studied.The method is based on the manganese(Ⅱ) catalyzing hydrogen peroxide to oxidate of eriochrome black T in hydroxide-ammonium chloride buffer medium.The reaction time and the degree of indicating reaction are controlled by non-organic solvents extraction equilibrium using polyethylene glycol-2000.The absorbance of polyethylene glycol-2000 phase is measured at 539 nm in weak acidic medium.The calibration graph is linear for 0.008 0-0.55 μg· mL-1 Mn(Ⅱ), and the detection limit is 3.0×10-9 g·L-1.The method can be applied to the determination of trace manganese in tea and aluminum alloy with satisfactory results.
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Received: 2004-03-18
Accepted: 2004-05-28
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Corresponding Authors:
SUN Deng-ming
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| Cite this article: |
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SUN Deng-ming,FANG Hua-cai. Determination of Trace Manganese by Non-Organic Solvents Extraction Catalytic Spectrophotometry in Mn(Ⅱ)-H2O2-EBT-PEG-2000 System [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(08): 1315-1317.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2005/V25/I08/1315 |
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