Published: Journal of Analytical Toxicology, Volume 23, Number 3, May/June 1999, pp.216-219.
Comparison of Solid-Phase Extraction and Supercritical
Fluid Extraction for the Analysis of Morphine in Whole Blood
A comparative study of the quantitative determination of morphine in whole blood using solid-phase extraction (SPE) and supercritical fluid extraction (SFE) is described. Comparative studies were made of the two techniques for the extraction of morphine from authentic forensic blood specimens. Quantitative results indicate that morphine levels measured using SPE correspond well to morphine levels produced using SFE. The two techniques are therefore comparable, although SFE is faster and cleaner and extracts may be produced with higher analyte recoveries than with SPE. This paper presents a comparison of the two techniques and the morphine concentrations determined in blood.
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