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Isolation of drug residues from tissues by solid phase dispersion
S A Barker1, A R Long, C R Short
1Department of Physiology, Pharmacology and Toxicology, School of Veterinary Medicine, Louisiana State University, Baton Rouge 70803.
Journal of Chromatography
|July 28, 1989
Summary
A novel solid phase dispersion technique simplifies drug isolation from tissues. This method enables stepwise extraction of multiple drug residues based on solubility, improving analytical efficiency.
Area of Science:
- Analytical Chemistry
- Pharmacology
- Biochemistry
Background:
- Accurate drug residue analysis in biological tissues is crucial for safety and efficacy monitoring.
- Existing methods for multidrug extraction can be complex and time-consuming.
Purpose of the Study:
- To develop and validate a new solid phase dispersion (SPD) method for efficient drug isolation from tissue samples.
- To demonstrate the method's applicability for simultaneous extraction of diverse drug classes.
Main Methods:
- Solid phase dispersion of homogenized tissue with a polymeric phase on a solid support.
- Stepwise elution of drugs based on differential solubility from the prepared matrix.
- Application to organophosphate, benzimidazole anthelmintic, and beta-lactam antibiotic residues.
Main Results:
- A semi-dry material suitable for column packing was successfully prepared.
- Stepwise isolation of drugs based on solubility characteristics was achieved.
- The method demonstrated applicability for multidrug residue extraction from a single tissue sample.
Conclusions:
- Solid phase dispersion offers a simplified approach for drug isolation from tissues.
- This technique facilitates efficient, stepwise extraction of multiple drug classes.
- The method holds promise for routine multidrug residue analysis in complex matrices.