A method for the separation and determination of neutral compounds in postmortem tissues

Area of Science:

• Forensic Chemistry
• Analytical Chemistry
• Toxicology

Background:

• Accurate drug detection in necrotic tissues is crucial for forensic and toxicological analyses.
• Existing methods for extracting neutral drugs from challenging biological matrices like necrotic tissue can be inefficient.

Purpose of the Study:

• To develop and validate a convenient and effective method for the extraction of neutral drugs from necrotic tissues.
• To establish a reliable procedure for quantitative analysis of these drugs using gas chromatography.

Main Methods:

• The described procedure utilizes hot dilute acid to isolate neutral drugs from tissue extract residues.
• An internal standard is employed to enhance the accuracy of quantitative and recovery measurements.
• Gas chromatography is used for the final drug analysis.

Main Results:

• The method demonstrated successful recovery of seven neutral compounds from liver tissue, with recovery rates ranging from 47.0% to 89.3%.
• The limits of detection for these drugs were determined to be between 0.5 and 1.0 mg/kg, indicating good sensitivity.

Conclusions:

• The developed method provides a convenient and reliable approach for extracting and quantifying neutral drugs in necrotic tissues.
• This technique is valuable for toxicological investigations requiring precise drug level determination in post-mortem or degraded biological samples.