Journal of chromatography. B, Biomedical sciences and applications 1997-10-24

Determination of low levels of poly(ethylene glycol) 400 in plasma and urine by capillary gas chromatography-selected ion-monitoring mass spectrometry after solid-phase extraction.

C Fakt, M Ervik

Index: J. Chromatogr. B. Biomed. Sci. Appl. 700(1-2) , 93-100, (1997)

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Abstract

A convenient and sensitive method for the quantitative determination of poly(ethylene glycol) 400 in plasma and urine with capillary gas chromatography-mass spectrometry has been developed. The sample preparation involves solid-phase extraction with subsequent derivatization with heptafluorobutyric anhydride, which proved to give the most stable derivative. The derivatization procedure was optimized using experimental design, and different solid-phase extraction columns were evaluated. The limit of quantitation was 1 micromol/l (0.4 microg/ml) for both plasma and urine.

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