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

A convenient method for the extraction of neutral drugs in necrotic tissues is described. The procedure includes the use of hot dilute acid for isolating neutrals from tissue extract residues and of internal standard to facilitate quantitative and recovery measurement of the drugs by gas chromatography. The recovery of seven neutral compounds from liver ranged from 47.0% to 89.3%. The limit of detection of these drugs were 0.5 to 1.0 mg/kg.