| 光谱学与光谱分析 |
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| A new Spectral Method for the Determination of Cationic Surfactant Based on the Resonance Scattering Effect of AgI-2 Association Particles |
| CHENG Yun-yan1, JIANG Zhi-liang1, 2*, LIANG Ai-hui2 |
1. Department of Resource and Environmental Science, Guangxi Normal University, Guilin 541004, China
2. Department of Material and Chemical Engineering, Guilin University of Technology, Guilin 541004, China |
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Abstract In pH 3.5 NaAc-HCl medium, there is a maximum resonance scattering (RS) peak at 360 nm and a synchronous scattering peak at 470 nm for the association particle system of (CTMAB-AgI2)n in white color, with a diameter of 700 nm. The CTMAB concentration cCTMAB in the range of 2.0-50.0×10-7 4 mol·L-1 is linear to the I360 nm value. Its regression equation is I360 nm=2.03×107cCTMAB+0.48，and regression coefficient is 0.998 5. The detection limit is 8.0×10-8 mol·L-1. A new RS method has been proposed for the determination of cationic surfactant in samples with satisfactory results. The laser scattering and RS spectra show that CTMAB＋ and AgI-2 combine to CTMA-AgI-2 association molecule by means of attractive forces. The association molecules automatically aggregate to (CTMA-AgI2)n association particles, so that the particles exhibit a resonance scattering peak at 360 nm, and the system is in white color.
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Received: 2005-06-28
Accepted: 2005-10-16
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Corresponding Authors:
JIANG Zhi-liang
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| Cite this article: |
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CHENG Yun-yan,JIANG Zhi-liang,LIANG Ai-hui. A new Spectral Method for the Determination of Cationic Surfactant Based on the Resonance Scattering Effect of AgI-2 Association Particles [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(10): 1888-1890.
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| URL: |
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https://www.gpxygpfx.com/EN/Y2006/V26/I10/1888 |
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