Results 171 to 180 of about 2,731 (212)
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Robotic Method for the Analysis of Cocaine and Benzoylecgonine in Urine*
Journal of Analytical Toxicology, 1991A totally automated procedure has been developed for the detection and quantitation of cocaine and benzoylecgonine (cocaine metabolite) in urine. A Zymate laboratory robotic system confirms positive samples from the Syva ETS by performing the extraction and derivatization of cocaine and benzoylecgonine.
R W, Taylor, S D, Le
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Direct photolysis of benzoylecgonine under UV irradiation at 254 nm in a continuous flow microcapillary array photoreactor [PDF]
Chemical Engineering Journal, 2016 Benzoylecgonine (BE) is the major metabolite of cocaine and a contaminant of emerging concern often detected in sewage treatment plant (STP) effluents and surface waters.
Danilo Russo +2 more
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The interpretation of cocaine and benzoylecgonine concentrations in postmortem cases
Forensic Science International, 1999This study examined cocaine and benzoylecgonine concentrations in 100 consecutive deaths where either compound was identified in blood or urine specimens to determine whether any relationship between these concentrations and cause of death can be found.
Amanda J Jenkins +2 more
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Detection of Benzoylecgonine in Urine by Means of UV Spectrophotometry
Journal of Analytical Toxicology, 1983A simple and reliable method has been developed for the detection of benzoylecgonine in urine by UV spectrophotometry. Benzoylecgonine was isolated by liquid-liquid extraction and subsequently identified based on its hydrolysis by NaOH. The decrease in absorbance at 235 nm caused by this NaOH hydrolysis was used to identify benzoylecgonine even in the ...
W, Sweeney, L R, Goldbaum, N T, Lappas
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Brain Concentrations of Cocaine and Benzoylecgonine in Fatal Cases
Journal of Forensic Sciences, 1985Abstract Since cocaine in blood rapidly hydrolyzes to benzoylecgonine, cocaine concentrations determined in postmortem blood may not reflect the presence or concentration of cocaine in the body at the time of death. The interpretative value of the determination of cocaine and benzoylecgonine in brain tissue was investigated.
V R, Spiehler, D, Reed
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Seizures Induced by the Cocaine Metabolite Benzoylecgonine in Rats
Epilepsia, 1992Summary:The half‐life (t1/2) of cocaine is relatively short, but some of the consequences of its use, such as seizures and strokes, can occur hours after exposure. This led us to hypothesize that a metabolite of cocaine may be responsible for some of those delayed sequelae. We evaluated the potential of the major metabolite of cocaine, benzoylecgonine (
R J, Konkol +4 more
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Optimization of Storage Conditions for Cocaine and Benzoylecgonine in Urine: A Review
Journal of Analytical Toxicology, 1994The maximum stability conditions for cocaine and its metabolite benzoylecgonine (BE) in urine were analyzed. Suggestions were presented after careful review of many studies and personal communications concerning cocaine and BE stability in urine. The optimal storage conditions for urine specimens with cocaine and BE were determined to be at -15 degrees
M J, Hippenstiel, B, Gerson
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Liquid-Liquid Extraction Systems for THC-COOH and Benzoylecgonine
Journal of Analytical Toxicology, 1991Because DuPont Instruments has discontinued commercial availability of the PREP automated sample processor, an alternate method for the general extraction of THC-COOH and benzoylecgonine from a urine matrix in the military drug screening laboratories' standard procedure is needed.
S B, Needleman, K, Goodin, W, Severino
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Effect of Intranasal Cocaine on the Urine Drug Screen for Benzoylecgonine
Otolaryngology–Head and Neck Surgery, 1992Otolaryngologists have long recognized the value of cocaine as a topical anesthetic and vasoconstricting agent. It is used in nasal surgery and as a vasoconstrictor before examination. As drug abuse has increased, screening for drugs of abuse has become common.
O S, Reichman, R A, Otto
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Detection and quantification of low levels of benzoylecgonine in equine urine
Forensic Science International, 2008Cocaine (COC) is a highly addictive plant alkaloid expressing strong psychostimulatory effect. It has no medical use in equine veterinary practice. The contamination of the environment with cocaine such as its presence on the US paper currency has been reported few times.
Connie, Luckie +8 more
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