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  • Title: Gas-liquid chromatographic determination of strychnine in grain baits.
    Author: Hanks AR, Engdahl BS, Colvin BM.
    Journal: J Assoc Off Anal Chem; 1975 Sep; 58(5):961-4. PubMed ID: 1158839.
    Abstract:
    A simple and rapid gas-liquid chromatographic procedure, using a 6' times 1/4'' glass column packed with 5% SE-30 on Chromosorb W (DMCS) and a flame ionization detector, is described. Grain baits containing strychnine alkaloid are ground, mixed, and extracted by shaking with chloroform containing an internal standard, 1,3,5-triphenylbenzene. Without further cleanup, extract filtrates are injected directly into a gas chromatograph. Peak height ratios are used for quantitation of strychnine. The analysis of commercial samples shows that the method compares well with a commonly employed ultraviolet spectrophotometric method; good precision, with recoveries ranging from 89.9 to 91.7%, is obtained in the analysis of prepared samples. The method is sensitive to 2 mug strychnine.
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