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- W1968586096 abstract "Abstract A methodology for the on-line sample preparation and HPLC determination of priority pollutant chloro and nitrophenols at very low concentrations in water was developed. A long precolumn packed with a polymeric reversed phase is used for the extraction and preconcentration of the neutral analytes from an acidified water sample. Then, a selective transfer of the ionized phenols to a small anion-exchange precolumn is carried out by means of an alkaline hydroorganic solution. Finally, the coupling of the second precolumn to the HPLC system, equipped with UV and coulometric detectors, allows the on-line gradient elution, RP-separation and sensitive detection of the compounds of interest. Good recoveries, high precision and detection limits at the sub-μg/L level have been achieved with spiked water samples." @default.
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- W1968586096 date "1998-07-01" @default.
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- W1968586096 title "Trace Level Chromatographic Determination of Priority Pollutant Chloro and Nitrophenols in Water with On-Line Sample Preparation" @default.
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- W1968586096 doi "https://doi.org/10.1080/03067319808032624" @default.
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