Simultaneous detection in urine of cocai
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J. Ortuño; R. De La Torre; J. Segura; J. Camí
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Article
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1990
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Elsevier Science
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English
⚖ 264 KB
The simultaneous detection in urine of cocaine (CO), and the main biotransformation products, benzoylecgonine (BE) and ecgonine methyl ester (EME), is difficult due to their different physicochemical properties. The method presented involves a bonded silica solid-phase extraction procedure that allo