Mount DL, Todd GD, Navaratnam V. Packed-column supercritical fluid chromatography of artemisinin (qinghaosu) with electron-capture detection.
JOURNAL OF CHROMATOGRAPHY. B, BIOMEDICAL APPLICATIONS 1995;
666:183-7. [PMID:
7655617 DOI:
10.1016/0378-4347(94)00560-r]
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Abstract
In this preliminary report, a supercritical fluid chromatographic method is described for the determination of artemisinin in whole blood. The chromatography is carried out on a 20 cm x 1 mm I.D. Deltabond cyano supercritical fluid chromatographic column with detection of the artemisinin via an electron-capture detector. The sample work-up uses a liquid-liquid extraction with hexane, giving a recovery of 82%. The current limit of detection using 1 ml of blood is 20 ng/ml. We speculate that the endoperoxide moiety accounts for the response to the electron-capture detector and thus provides a new approach by which this class of compounds may be analyzed.
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