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KMID : 0385520090220040307
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Analytical Science & Technology
2009 Volume.22 No. 4 p.307 ~ p.312
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Determination of carbaryl in aqueous solution by fluorescence spectrometry
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Kim Wook-Hyun
Lee Sang-Hak
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Abstract
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A spectrofluorimetric methods has been developed for the determination of carbaryl in an aqueous solution. The effects of excitation wavelength, concentration of surfactant, concentration of ethanol as cosurfactant and emission wavelength on the fluorescence intensity were investigated to find the optimum experimental conditions to determine carbaryl. The emission intensity of the carbayl was increased with addition of sodium dodecyl sulfate (SDS) as a surfactant. The emission intensity of the carbaryl was further increased with addition of ethanol as a co-surfactant. The optimum conditions were 281 ㎚ for excitation wavelength, 1.0×10?2 ㏖/L SDS, 20% (v/v) ethanol and 349 ㎚ for emission wavelength. Under the optimum conditions, the emission intensity increased with the carbaryl concentration in the range of 5×10?7 to 1.0×10?4 ㏖/L with a detection limit (3σ) of 1.1×10?8 ㏖/L. The resulting correlation coefficient of the working curve was 0.9996.
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KEYWORD
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Carbaryl, sodium dodecyl sulfate, ethanol, fluorescence spectrometry
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