Trace Benzidine Detection by Surface Enhanced Raman Spectroscopy

doi:10.7503/cjcu20120018

Chem. J. Chinese Universities ›› 2012, Vol. 33 ›› Issue (10): 2191.doi: 10.7503/cjcu20120018

• Analytical Chemistry • Previous Articles Next Articles

Trace Benzidine Detection by Surface Enhanced Raman Spectroscopy

YANG You-Ming, RUAN Wei-Dong, SONG Wei, WANG Xu, XU Wei-Qing, ZHAO Bing

State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China

Received:2012-01-06 Online:2012-10-10 Published:2012-09-12

Abstract

Abstract:

Surface-enhanced Raman scattering(SERS)-active silver colloid was prepared by a chemical method and characterized by transmission electron microscopy, scanning electron microscopy and UV-Vis spectroscopy. Silver colloid was chosen as SERS substrate to detect trace benzidine in aqueous-solution and the SERS peaks were assigned. The influence of aggregating agent (MgCl₂) to the SERS was also investigated. The results indicate that SERS intensity firstly increases and then decreases when the concentration of MgCl₂ is increased. There is an optimized concentration of MgCl₂. The limit of detection for benzidine is around 10^-8 mol/L under the optimized condition.

Key words: Surface-enhanced Raman spectroscopy(SERS), Benzidine detection, Silver colloid

CLC Number:

O657
O647

TrendMD:

YANG You-Ming, RUAN Wei-Dong, SONG Wei, WANG Xu, XU Wei-Qing, ZHAO Bing. Trace Benzidine Detection by Surface Enhanced Raman Spectroscopy[J]. Chem. J. Chinese Universities, 2012, 33(10): 2191.

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Trace Benzidine Detection by Surface Enhanced Raman Spectroscopy

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