| 光谱学与光谱分析 |
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| Infrared Spectral Analysis for Calcined Borax |
| ZHAO Cui, REN Li-li, WANG Dong, ZHOU Ping, ZHANG Qian, WANG Bo-tao* |
| College of Pharmacy, Nanjing University of Technology, Nanjing 211816, China |
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Abstract To valuate the quality of calcined borax which is sold in the market, 18 samples of calcined borax were studied using the Fourier transform infrared, and samples with different water content were selected and analyzed. Then, the results of analysis were used to evaluate the quality of calcined borax. Results show that the infrared spectra of calcined borax include OH vibration, BO3-3 vibration and BO5-4 vibration absorption bands. The position and width of OH vibration absorption band depend on the level of water content, and the more the water content, the wider the absorption band. The number of BO3-3 vibration and BO5-4 vibration bands also depend on the level of water content, and the more the water content, and the stronger the hydrogen bond and the lower the symmetry of B atoms, the more the number of infrared absorption peaks. It was concluded that because the quality of calcined borax has direct correlation with water content, the infrared spectroscopy is an express and objective approach to quality analysis and evaluation of calcined borax.
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Received: 2010-10-15
Accepted: 2011-02-20
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Corresponding Authors:
WANG Bo-tao
E-mail: hywbt@sina.com
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