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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1991-3-8
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pubmed:abstractText |
A gas chromatographic method is presented to measure cocaine in serum, plasma or blood. To reduce the in-vitro chemical and enzymic hydrolysis of cocaine, samples should be collected into fluoride oxalate tubes, frozen immediately and stored at -20 degrees C until analysis. Extractions are carried out in disposable glass tubes immersed in an ice-bath. The method uses a single step extraction from a mildly basic solution into n-butyl acetate containing maprotiline internal standard. A portion of the upper organic layer is chromatographed for 5 min isothermally on a packed column (3% SP2250) with nitrogen-phosphorus detection. The coefficient of variation (CV) of the assay is below 6% at 0.1 mg/L and the limit of accurate measurement is 0.02 mg/L. A case of acute cocaine intoxication is described to illustrate the application of the method.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0004-5632
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
27 ( Pt 5)
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
478-81
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:2281928-Adult,
pubmed-meshheading:2281928-Calibration,
pubmed-meshheading:2281928-Chromatography, Gas,
pubmed-meshheading:2281928-Cocaine,
pubmed-meshheading:2281928-Humans,
pubmed-meshheading:2281928-Male,
pubmed-meshheading:2281928-Maprotiline,
pubmed-meshheading:2281928-Overdose,
pubmed-meshheading:2281928-Plasma
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pubmed:year |
1990
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pubmed:articleTitle |
Gas chromatographic measurement of cocaine in serum, plasma and whole blood.
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pubmed:affiliation |
Poisons Unit, Guy's Hopital, London, UK.
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pubmed:publicationType |
Journal Article,
Case Reports
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