Determination of alkylmethylphosphonic acids, the main metabolites of organophosphorus nerve agents, in biofluids by gas chromatography-mass spectrometry and liquid-liquid-solid-phase-transfer-catalyzed pentafluorobenzylation.

abstract：:A sensitive and reproducible gas chromatographic procedure for the quantitative determination of urinary o-cresol is described. The first step involves acid hydrolysis (2N HCl, 100 degrees C, 10 min), which yields unconjugated o-cresol. After extraction (methylene chloride, pH 2), the organic layer is concentrated by ...

journal_title：Journal of analytical toxicology

authors： Truchon G,Tardif R,Brodeur J

更新日期：1996-09-01 00:00:00

abstract：:We devised a highly sensitive method for simultaneously determining methamphetamine (MA) and amphetamine (AP) enantiomers, desmethylselegiline (DMSG) and selegiline (SG), in human hair using a derivatization technique and high-performance liquid chromatography-electrospray ionization-mass spectrometry (HPLC-ESI-MS). M...

journal_title：Journal of analytical toxicology

authors： Nishida K,Itoh S,Inoue N,Kudo K,Ikeda N

更新日期：2006-05-01 00:00:00

abstract：:The testing for drugs of abuse in hair is increasingly used to detect illicit substances. Laboratories have implemented various decontamination, or washing, procedures in order to eliminate concerns regarding potential contamination of the hair with drug from the environment. However, the effect of these decontaminati...

journal_title：Journal of analytical toxicology

authors： Paulsen RB,Wilkins DG,Slawson MH,Shaw K,Rollins DE

更新日期：2001-10-01 00:00:00

abstract：:A method for the detection and quantitation of methamphetamine and its major metabolite in hair, nails, sweat, and saliva from habitual users of methamphetamine by mass fragmentography has been developed. Hair and nail samples were washed with water and methanol to remove the external contamination, processed with 0.6...

journal_title：Journal of analytical toxicology

authors： Suzuki S,Inoue T,Hori H,Inayama S

更新日期：1989-05-01 00:00:00

abstract：:Storage of drug-based evidence inside sealed safes may allow chemical vapors to accumulate, creating concerns of drug exposure by inhalation, or the possibility of cross-contamination of drug evidence. Air samples were taken from inside eight drug safes and one small storage room at nine city and country police statio...

journal_title：Journal of analytical toxicology

authors： Doran GS,Deans R,De Filippis C,Kostakis C,Howitt JA

更新日期：2018-06-01 00:00:00

abstract：:3,4-Methylenedioxypyrovalerone (MDPV) is a psychoactive, synthetic analog of the central nervous system stimulant cathinone. Its recent popularity as a recreational drug in the United States has led to numerous reports to poison control centers across the country. As with other synthetic cathinones, the recreational u...

journal_title：Journal of analytical toxicology

authors： Wyman JF,Lavins ES,Engelhart D,Armstrong EJ,Snell KD,Boggs PD,Taylor SM,Norris RN,Miller FP

更新日期：2013-04-01 00:00:00

abstract：:Propane can be responsible for several types of lethal intoxication and explosions. Quantifying it would be very helpful to determine in some cases the cause of death. Some gas chromatography-mass spectrometry (GC-MS) methods of propane measurements do already exist. The main drawback of these GC-MS methods described ...

journal_title：Journal of analytical toxicology

authors： Smith F,Augsburger M,Varlet V

更新日期：2014-03-01 00:00:00

abstract：:Phenazepam and etizolam were the first uncontrolled benzodiazepines available for sale in the UK. Pyrazolam, flubromazepam and diclazepam are not used medicinally anywhere in the world; they are produced exclusively for the uncontrolled, recreational market. It is important to know whether potentially abused drugs lik...

journal_title：Journal of analytical toxicology

authors： O'Connor LC,Torrance HJ,McKeown DA

更新日期：2016-03-01 00:00:00

abstract：:Decomposed bone and plasma samples of rats exposed to amitriptyline (AMI) and citalopram (CIT) under different dosing patterns were analyzed. Wistar rats received one acute dose (120 mg AMI/kg and 40 mg CIT/kg; n = 5) or two doses (40 mg AMI/kg and 13 mg CIT/kg, n = 5) 40 min apart. After collection of perimortem bloo...

journal_title：Journal of analytical toxicology

authors： Watterson JH,Cornthwaite HM

更新日期：2013-10-01 00:00:00

abstract：:In June 1986, an epidemic of poisoning occurred in Sierra Leone, West Africa; it involved 49 persons--with 14 deaths. Our laboratory's approach and investigation of this incident is described. Using positive chemical ionization mass spectrometry and nuclear magnetic resonance spectroscopy, the toxicant was identified ...

journal_title：Journal of analytical toxicology

authors： Hill RH Jr,Alley CC,Ashley DL,Cline RE,Head SL,Needham LL,Etzel RA

更新日期：1990-07-01 00:00:00

abstract：:A rapid, simple, highly sensitive procedure for the simultaneous analysis of bromazepam, alprazolam, clonazepam, lorazepam, oxazepam, diazepam, midazolam, flurazepam, flunitrazepam, nordiazepam, triazolam, temazepam, nitrazepam, and chlordiazepoxide in oral fluid is described, using liquid chromatography coupled to a ...

journal_title：Journal of analytical toxicology

authors： Moore C,Coulter C,Crompton K,Zumwalt M

更新日期：2007-11-01 00:00:00

abstract：:The Substance Abuse and Mental Health Services Administration (SAMHSA) is currently evaluating hydrocodone (HC) for inclusion in the Mandatory Guidelines for Federal Workplace Drug Testing Programs. This study evaluated the time course of HC, norhydrocodone (NHC), dihydrocodeine (DHC) and hydromorphone (HM) in paired ...

journal_title：Journal of analytical toxicology

authors： Cone EJ,DePriest AZ,Heltsley R,Black DL,Mitchell JM,LoDico C,Flegel R

更新日期：2015-09-01 00:00:00

abstract：:A variety of chemical agents were evaluated to determine their effects on fluorescence polarization immunoassays for drugs of abuse. Sixteen different agents, at concentrations up to 10%, were tested against urine assays for cannabinoids, cocaine (metabolite), amphetamines, opiates, phencyclidine (PCP), and barbiturat...

journal_title：Journal of analytical toxicology

authors： Schwarzhoff R,Cody JT

更新日期：1993-01-01 00:00:00

abstract：:Despite the efforts to prevent the spread of new psychoactive substances (NPS) such as synthetic amphetamine derivatives, it is apparent that newer types of NPS are still emerging on the market in recent years. Due to high potential for their abuse, reliable analytical methods are required to determine these substance...

journal_title：Journal of analytical toxicology

authors： Kim JY,Suh S,Park J,In MK

更新日期：2018-11-01 00:00:00

abstract：:Amoxapine, a tricyclic antidepressant, is metabolized to 8-hydroxyamoxapine and 7-hydroxyamoxapine. There are few reports on the metabolism of this drug and correlation of clinical symptoms in overdose patients. Five such patients admitted to the Emergency Unit of the University of Cincinnati Hospital were studied. Cl...

journal_title：Journal of analytical toxicology

authors： Tasset JJ,Pesce AJ

更新日期：1984-05-01 00:00:00

abstract：:Synthetic cathinones inhibit monoamine transporters, such as serotonin, norepinephrine, and dopamine transporters, and act on the central nervous system via increasing synaptic concentrations of monoamines. These compounds, which are highly addictive and potentially poisonous, are new psychoactive substances. In this ...

journal_title：Journal of analytical toxicology

authors： Fujita Y,Mita T,Usui K,Kamijo Y,Kikuchi S,Onodera M,Fujino Y,Inoue Y

更新日期：2018-01-01 00:00:00

abstract：:Sixteen apparently intact procainamide tablets, in varied stages of drug depletion, were found distributed throughout the gastrointestinal tract of a man who died of arteriosclerotic heart disease with pulmonary complications. The tablets were found to contain procainamide by a thin layer chromatography system with ca...

journal_title：Journal of analytical toxicology

authors： Griesemer EC

更新日期：1984-09-01 00:00:00

abstract：:This report describes a possible suicide by overdosage with diltiazem. The decreased, a 39-year-old male who had been under treatment for an unidentified heart condition, was discovered on the bathroom floor in his residence. Comprehensive drug screens performed on available postmortem specimens revealed the presence ...

journal_title：Journal of analytical toxicology

authors： Kalin JR,Wood KM,Lee AJ

更新日期：1994-05-01 00:00:00

abstract：:An analytical procedure for simultaneous determination of codeine and morphine in urine is described. The detection of codeine and morphine is based on liquid-liquid extraction and derivatization to the acetylated compounds. The acetylated codeine and morphine are separated by capillary gas chromatography and identifi...

journal_title：Journal of analytical toxicology

authors： Paul BD,Mell LD Jr,Mitchell JM,Irving J,Novak AJ

更新日期：1985-09-01 00:00:00

abstract：:An original high-performance liquid chromatographic-mass spectrometric (HPLC-MS) procedure was developed for the determination of cyanide (CN) in whole blood. After the addition of K13C15N as internal standard, blood was placed in a microdiffusion device, the inner well of which was filled with a mixture of taurine (5...

journal_title：Journal of analytical toxicology

authors： Tracqui A,Raul JS,Géraut A,Berthelon L,Ludes B

更新日期：2002-04-01 00:00:00

abstract：:Hop-derived iso-α-acid (IAA) ingredient congeners are specific to beer. Concentrations of IAAs were determined in blood of five volunteers over 6 h following the consumption of small volumes of beer containing relatively high (Pale Ale beer) or low (wheat beer) concentrations of IAAs. IAAs were quickly absorbed with p...

journal_title：Journal of analytical toxicology

authors： Rodda LN,Gerostamoulos D,Drummer OH

更新日期：2014-07-01 00:00:00

abstract：:A feasibility study was performed to examine the effectiveness of hair testing in determining the prevalence of drug use in a young adult population. The study included 200 randomly selected young adults in Norway. It was designed to make the collection, preparation and analysis of the samples as little resource deman...

journal_title：Journal of analytical toxicology

authors： Lund HM,Gjerde H,de Courtade SM,Oiestad EL,Christophersen AS

更新日期：2013-07-01 00:00:00

abstract：:Bone was analyzed for ketamine and norketamine to examine whether different patterns of drug exposure could be discriminated. Rats received (intraperitoneally) one 75 mg/kg dose (Acute-1 and Acute-2 groups), three 25-mg/kg doses 1 hour apart (Repeated group), or nine single daily ketamine doses of 75 mg/kg followed by...

journal_title：Journal of analytical toxicology

authors： Watterson JH,Donohue JP,Betit CC

更新日期：2012-07-01 00:00:00

abstract：:A case of lethal overdose by prilocaine, a local anaesthetic, is presented. The patient died in the dental office during treatment, and the time course of events was documented. The drug concentration in blood, urine, and liver was measured. ...

journal_title：Journal of analytical toxicology

authors： Kaliciak HA,Chan SC

更新日期：1986-03-01 00:00:00

abstract：:This manuscript details a validated liquid chromatography-atmospheric pressure chemical ionization-tandem mass spectrometry (LC-APCI-MS-MS) method for the quantification of methadone and its metabolites 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine (EDDP) and 2-ethyl-5-methyl-3,3-diphenylpyroline (EMDP) in 0.5 mL ...

journal_title：Journal of analytical toxicology

authors： Choo RE,Jansson LM,Scheidweiler K,Huestis MA

更新日期：2007-06-01 00:00:00

abstract：:Confirmation of drugs of abuse by gas chromatography-mass spectrometry (GC-MS) is the most time-consuming process used by drug-testing laboratories. Cost effectiveness and competitive turnaround times for testing results demand fast, efficient, and reliable extraction methods. We applied the Cerex Polycrom-THC solid-p...

journal_title：Journal of analytical toxicology

authors： Crockett DK,Nelson G,Dimson P,Urry FM

更新日期：2000-05-01 00:00:00

abstract：:Pigmented (C57BI) and nonpigmented (balb/c) mice, 25 days of age, were treated intraperitoneally with [3H]-nicotine (4 mg/kg, 555 dpm/ng) or [3H]-flunitrazepam (1 mg/kg, 2200 dpm/ng) daily for three days. After 21 days, shaved back hair was digested at 37 degrees C for 24 h with either 1 M sodium hydroxide or 1 M sodi...

journal_title：Journal of analytical toxicology

authors： Claffey DJ,Stout PR,Ruth JA

更新日期：2000-01-01 00:00:00

abstract：:Analytical methods were developed to determine the presence of ethylenediaminetetraacetic acid (EDTA) in dried bloodstains to provide probative information when allegations of evidence tampering have been made in criminal cases. A simple screening method using ion chromatography to analyze stains was found to be quant...

journal_title：Journal of analytical toxicology

authors： Miller ML,McCord BR,Martz R,Budowle B

更新日期：1997-11-01 00:00:00

abstract：:An assay for neurotoxic esterase (neuropathy target esterase, NTE) was developed by Johnson (1,2) to assess the delayed neurotoxic potential of organophosphorus compounds. NTE activity is calculated from the rate of phenyl valerate hydrolysis resistant to paraoxon and sensitive to mipafox inhibition under specified co...

journal_title：Journal of analytical toxicology

authors： Kayyali US,Moore TB,Randall JC,Richardson RJ

更新日期：1991-03-01 00:00:00

abstract：:Vitreous humor is a fluid contained in the eye that is largely composed of water. The advantages of vitreous humor as a specimen for postmortem drug analysis include its relatively low susceptibility to contamination and the ability to analyze vitreous humor with little or no pretreatment. The postmortem analysis of e...

journal_title：Journal of analytical toxicology

authors： Cox D,Jufer Phipps RA,Levine B,Jacobs A,Fowler D

更新日期：2007-10-01 00:00:00