TY - JOUR
T1 - Gas chromatographic method for determining strychnine residues in alfalfa
AU - Miller, G.
AU - Warren, J.
AU - Gohre, K.
AU - Hanks, L.
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 1982
Y1 - 1982
N2 - A gas-liquid chromatographic procedure is described for determining strychnine in alfalfa with a nitrogen-phosphorus detector. Alfalfa samples containing strychnine residues are chopped and extracted in a blender using ethyl acetate, sodium carbonate, and sodium sulfate, and the organic extract is extracted with 0.1N H2SO4 solution, made basic and subsequently extracted with methylene chloride. Following concentration, the strychnine residues are quantitated by peak height, using an external standard. Recoveries for 0.05 ppm spikes were 88 ± 11%.
AB - A gas-liquid chromatographic procedure is described for determining strychnine in alfalfa with a nitrogen-phosphorus detector. Alfalfa samples containing strychnine residues are chopped and extracted in a blender using ethyl acetate, sodium carbonate, and sodium sulfate, and the organic extract is extracted with 0.1N H2SO4 solution, made basic and subsequently extracted with methylene chloride. Following concentration, the strychnine residues are quantitated by peak height, using an external standard. Recoveries for 0.05 ppm spikes were 88 ± 11%.
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U2 - 10.1093/jaoac/65.4.901
DO - 10.1093/jaoac/65.4.901
M3 - Article
C2 - 7118797
AN - SCOPUS:0020446070
SN - 1060-3271
VL - 65
SP - 901
EP - 903
JO - Journal of AOAC International
JF - Journal of AOAC International
IS - 4
ER -