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KMID : 0385519940070010033
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Analytical Science & Technology
1994 Volume.7 No. 1 p.33 ~ p.39
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A Study on the Development of Analytical Methods and Behaviors of Environmental Pollutants(Ⅲ)
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Lee Dai-Woon
Kim Jin-Young
Park Young-Hun
Moon Myeong-Hee
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Abstract
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The purpose on this study was to develop a new improved chromatographic method for determination of trace phenols from environmental waste water. The research was carried out with selected 8 phenols, and solid-phase extraction was employed as sample pretreatment method. The coupling of XAD-4 and Dowex 1 X8 resin as preconcentration column increased the. selectivities toward interferences coexisted in matrix. Automation vas accomplished with on-line process of pretreatment and HPLC system. After elution of sample through XAD-4´column, phenols were adsorbed by dispersion force, then displaced from it by ACN basified, simultaneously and selectively readsorbed via anion exchange on Doves 1X8. Dowex 1X8 column was washed by water. Phenols readsorbed were reanoved from Dowex 1X8 column by a minimum volumn of methanol containing HC1. Each pretreatment step was connected by switching valves and the eluate was directly on-line injected to ob-
tain fast and reliable results into the HPLC. Recovery of phenols was greater than 90%. To examine utility of this method, analysis of phenols from laboratory waste water sample which was added some organic pollutants to find with phenols on environmental waste water were also accomplished without their interference effects.
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KEYWORD
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Phenols, HPLC, On-line Concentration
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