Ultra-trace analysis of biological molecules in water by means of the resonance Raman spectra in liquid-core optical fiber
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1.
College of Physics, Jilin University, Changchun 130023, China;
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2.
Changchun Institute of Applied Chemistry, the Chinese Academy of Sciences, Changchun 130022, China
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Received Date:
2003-09-04
Accepted Date:
2004-04-13
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Abstract
The study on detecting,identifying and controlling the biological molecules in water is profound and significant project.We used the means of the resonance Raman spectra in the liquid-core optical fiber,and the intensity of the Raman spectra was enhanced 109 times.β-carotene was dissolved in organic solution(pyridine and water),poured into a number of hollow-core capillary made up of liquid-core optical fiber.The laser wavelength is 514.5nm.The laser power is 30mW.By this means we obtained the resonance Raman spectra of β-carotene with the concentration of 10-7mol/L～10-9 mol/L.This means provided an experiment technique for trace analysis of biological molecules in water.
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