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Surface-enhanced Raman spectroscopy of morphine in silver colloid |
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| Authors: | Shangyuan Feng Weiwei Chen Wei Huang Min Cheng Juqiang Lin Yongzeng Li Rong Chen |
| Institution: | 1. Key Laboratory of OptoElectronic Science and Technology for Medicine,Ministry of Education,Fujian Normal University,Fuzhou 350007,China;College of Chemistry and Material Science,Experimental Center,Fujian Normal University,Fuzhou 350007,China 2. Key Laboratory of OptoElectronic Science and Technology for Medicine,Ministry of Education,Fujian Normal University,Fuzhou 350007,China 3. College of Min Jiang,Fuzhou 350007,China 4. Key Laboratory of OptoElectronic Science and Technology for Medicine,Ministry of Education,Fujian Normal University,Fuzhou 350007,China;State Key Lab of Physical Chemistry of Solid Surface,Xiamen University,Xiamen 361005,China |
| Abstract: | We report the surface-enhanced Raman (SERS) spectra of morphine in silver colloid, and study the silver colloid enhanced effects on the Raman scattering of morphine.The Raman bands of morphine are assigned to certain molecule vibrations.The broad band in the long-wavelength region of the electronic absorption spectra of the sol with added adsorbent at certain concentrations has been explained in terms of the ag-gregation of the colloidal silver particles.The potential applications of SERS in quantitative measurement of the morphine samples are demonstrated.By using a proper Raman band of morphine, the detection limit of morphine in silver sol is found to be 1.5 ng/ml.The result suggests that it is of great significance to use SERS in illicit drug morphine inspection. |
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