Determination of pesticide metabolites in human urine using an isotope dilution technique and tandem mass spectrometry.

abstract：:The identification of benzodiazepines (BZD) in biological fluids can be a challenging process. The large number of various BZD in pharmaceutical distribution, with similar core structures, and individual metabolic profiles all contribute to a complicated and time-consuming analysis. The purpose of the current study wa...

journal_title：Journal of analytical toxicology

authors： DeRienz RT,Holler JM,Manos ME,Jemionek J,Past MR

更新日期：2008-07-01 00:00:00

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：:A simple, rapid, and sensitive method which allows us to simultaneously determine bromvalerylurea (BVU) and its three metabolites (3-methylbutyrylurea [MVU], alpha-(cystein-S-yl)isovalerylurea [CVU], and alpha-(N-acetylcystein-S-yl)isovalerylurea [AcCVU]) was investigated by frit-fast atom bombardment liquid chromatog...

journal_title：Journal of analytical toxicology

authors： Tsuchihashi H,Nishikawa M,Igarashi K,Tatsuno M,Katagi M,Kasuya F,Fukui M

更新日期：1998-11-01 00:00:00

abstract：:Bupropion is a "second generation" antidepressant agent structurally related to the phenethylamines. Postmortem toxicology data are presented from three suicidal drug overdoses in which bupropion was detected. In two cases in which bupropion was the major toxicology finding, peripheral blood levels of the parent drug ...

journal_title：Journal of analytical toxicology

authors： Friel PN,Logan BK,Fligner CL

更新日期：1993-11-01 00:00:00

abstract：:The objective of this project was to validate a new high-throughput homogeneous enzyme immunoassay (HEIA) for the rapid detection of carisoprodol in human urine. Carisoprodol (Soma(®)) and meprobamate are widely prescribed as musculoskeletal pain relief drugs and are listed as one of the 10 most frequently identified ...

journal_title：Journal of analytical toxicology

authors： Wang G,Huynh K,Barhate R,Rodrigues W,Moore C,Coulter C,Vincent M,Soares J

更新日期：2011-03-01 00:00:00

abstract：:In this study, we investigated the effectiveness of the Roche Kinetic Interaction of Microparticles in Solution (KIMS) screening assay for cannabinoid metabolites. Urine specimens (N = 1689) were collected during elimination of cannabinoids from 25 subjects with a history of marijuana use. Specimens were analyzed conc...

journal_title：Journal of analytical toxicology

authors： Lyons TP,Okano CK,Kuhnle JA,Bruins MR,Darwin WD,Moolchan ET,Huestis MA

更新日期：2001-10-01 00:00:00

abstract：:The present study evaluates the suitability of headspace gas chromatography (GC) with a capillary column as a method for determining the ethanol content in different biological fluids. This procedure allows the use of headspace GC not only as a reference method but also in routine diagnostics and monitoring work. The ...

journal_title：Journal of analytical toxicology

authors： Macchia T,Mancinelli R,Gentili S,Lugaresi EC,Raponi A,Taggi F

更新日期：1995-07-01 00:00:00

abstract：:As an approved medicinal product and reportedly an abused substance that have been associated with death and "considered to be a factor...of impaired driving, sexual assault, and other violent crimes", triazolam is controlled at the same level (Level III) as flunitrazepam in Taiwan. Alleged misuses of this substance h...

journal_title：Journal of analytical toxicology

authors： Lin DL,Huang TY,Liu HC,Yin RM

更新日期：2005-03-01 00:00:00

abstract：:Cyanohydrins, also be called cyanoalcohols, are important industrial precursors to carboxylic acids and some amino acids. Acetone cyanohydrin (ACH) and formaldehyde cyanohydrin (glycolonitrile, FCH), which are the typical examples of cyanohydrins, are classified as extremely hazardous substances. As the cyanohydrins c...

journal_title：Journal of analytical toxicology

authors： Zheng S,Yuan X,Wang W,Liang C,Cao F,Zhang R

更新日期：2016-06-01 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：:Suvorexant (Belsomra®) is a novel dual orexin receptor antagonist used for the treatment of insomnia. The prevalence of suvorexant in forensic samples is relatively unknown, which demonstrates the need for robust analytical assays for the detection of this sedative hypnotic in forensic toxicology laboratories. In this...

journal_title：Journal of analytical toxicology

authors： Skillman B,Kerrigan S

更新日期：2020-04-30 00:00:00

abstract：:A simple isocratic HPLC procedure for the analysis of cocaine in plasma, with or without an internal standard, is described for the first time. Basified plasma was extracted in ether, re-extracted in acetic acid, which was subsequently basified prior to the final extraction in n-hexane. The hexane extract was evaporat...

journal_title：Journal of analytical toxicology

authors： Masoud AN,Krupski DM

更新日期：1980-11-01 00:00:00

abstract：:Unknown compounds that were not amenable to GC/MS were found during routine benzodiazepine HPLC screening in a postmortem case. The apparent thermolability made the application of liquid chromatography with mass spectrometry mandatory. The moving-belt interface was used because of its value for identification based on...

journal_title：Journal of analytical toxicology

authors： Verheij ER,van der Greef J,La Vos GF,van der Pol W,Niessen WM

更新日期：1989-01-01 00:00:00

abstract：:As part of a search for phencyclidine (PCP) antagonists, a series of eleven aryl-substituted PCP analogs were prepared and characterized. TLC and GC elution profiles of these derivatives are described in a number of systems allowing for the tentative identification of the PCP analogs. Further, MS, NMR, UV/vis and IR s...

journal_title：Journal of analytical toxicology

authors： Costa JF,Speaker TJ

更新日期：1983-09-01 00:00:00

abstract：:In Europe, the compound 3,4-methylenedioxymethamphetamine (MDMA, Ecstasy, Adam), in addition to cannabis, is the most abused illicit drug at all-night "techno" parties. Methods for the determination of MDMA and its metabolites, 4-hydroxy-3-methoxymethamphetamine (HMMA), 3,4-dihydroxy-methamphetamine (HHMA), 3,4-methyl...

journal_title：Journal of analytical toxicology

authors： Helmlin HJ,Bracher K,Bourquin D,Vonlanthen D,Brenneisen R

更新日期：1996-10-01 00:00:00

abstract：:While earlier studies have attempted to resolve the challenges encountered when interpreting gamma-hydroxybutyric acid (GHB) concentrations in hair (primarily due to its endogenous presence), few have had large sample sizes. The first objective of this study was to evaluate the inter-individual variation of endogenous...

journal_title：Journal of analytical toxicology

authors： Thomas JL,Strickland EC,Lloyd EW,Donnelly CC,Rankoth A,Pieczonka SM,Colpoys C,Smith MA,LeBeau MA,Montgomery MA,Karas RP,Peters EM,Miller ML

更新日期：2020-10-12 00:00:00

abstract：:The concentrations of amphetamine and methamphetamine in a new lyophilized human urine reference material (RM) were determined at the National Institute of Standards and Technology, in cooperation with the College of American Pathologists. In order to minimize the possibility of undetected bias, two different methods ...

journal_title：Journal of analytical toxicology

authors： Ellerbe P,Long T,Welch MJ

更新日期：1993-05-01 00:00:00

abstract：:Gas chromatographic methods have been developed using a Supelco 1240-DA column for the determination of pentachlorophenol (PCP) in plasma and urine samples, and phenol in urine samples. These methods required no derivatization. Electron capture detection has been used for PCP determination, while flame ionization dete...

journal_title：Journal of analytical toxicology

authors： Rick DL,Licht CF,McCarty LP

更新日期：1982-11-01 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：:The effects of decomposition microclimate on the distribution of dextromethorphan (DXM) and dextrorphan (DXT) in skeletonized remains of rats acutely exposed to DXM were examined. Animals (n = 10) received DXM (75 mg/kg, i.p.), were euthanized 30 min post-dose and immediately allowed to decompose at either Site A (sha...

journal_title：Journal of analytical toxicology

authors： Unger KA,Watterson JH

更新日期：2016-10-01 00:00:00

abstract：:An analytical procedure for the determination of the new pain medication tapentadol and its main metabolite N-desmethyltapentadol (DMT), in urine and oral fluid has been developed and validated using liquid chromatography with tandem mass spectral detection (LC-MS-MS). Oral fluid was collected using Quantisal™ devices...

journal_title：Journal of analytical toxicology

authors： Coulter C,Taruc M,Tuyay J,Moore C

更新日期：2010-10-01 00:00:00

abstract：:Four kinds of volatile anesthetics (halothane, enflurane, isoflurane, and sevoflurane) that were dissolved in 3 microL of experimental plasma samples were examined by the pulse-heating gas chromatographic-mass spectrometric method, and this approach was found to be reliable for qualitative and quantitative analysis. T...

journal_title：Journal of analytical toxicology

authors： Saito K,Takayasu T,Nishigami J,Kondo T,Ohtsuji M,Lin Z,Ohshima T

更新日期：1995-03-01 00:00:00

abstract：:Oxymorphone (OM), a prescription opioid and metabolite of oxycodone, was included in the recently published proposed revisions to the Mandatory Guidelines for Federal Workplace Drug Testing Programs. To facilitate toxicological interpretation, this study characterized the time course of OM and its metabolite, noroxymo...

journal_title：Journal of analytical toxicology

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

更新日期：2016-10-01 00:00:00

abstract：:Gas chromatographic-mass spectrometric (GC-MS) quantitation of 25 cannabis sed oils determined delta 9-tetrahydrocannabinol (THC) concentrations from 3 to 1500 micrograms/g oil. In a pilot study, the morning urine of six volunteers who had ingested 11 or 22 g of the oil, which contained the highest THC content (1500 m...

journal_title：Journal of analytical toxicology

authors： Lehmann T,Sager F,Brenneisen R

更新日期：1997-09-01 00:00:00

abstract：:Oxymorphone, a semi-synthetic opioid analgesic, has been available as Numorphan since the 1950s in the form of injectable solutions and a suppository. Recently, in 2006, oxymorphone was approved by the Federal Drug Administration for use in the form of immediate and extended release tablets under the trade name Opana....

journal_title：Journal of analytical toxicology

authors： Garside D,Hargrove RL,Winecker RE

更新日期：2009-04-01 00:00:00

abstract：:Analysis and interpretation of the findings for the drug of abuse gamma hydroxybutyric acid (GHB) in fatalities has become very problematic. This is primarily because of variable data in postmortem biological fluids resulting from the endogenous nature of the compound, possible postmortem production, and varying metho...

journal_title：Journal of analytical toxicology

authors： Elliott SP

更新日期：2004-01-01 00:00:00

abstract：:A fast and efficient multiresidue extraction-purification procedure was developed for low levels (ppb range) of phenanthrene and hydroxyphenanthrene in biological matrices, in order to quantify phenanthrene and metabolites in blood, milk, urine, and biological tissues of lactating goats. Detection and identification o...

journal_title：Journal of analytical toxicology

authors： Grova N,Monteau F,Le Bizec B,Feidt C,Andre F,Rychen G

更新日期：2005-04-01 00:00:00

abstract：:Dehydroepiandrosterone (DHEA) is an endogenous androgenic steroid produced by the ovaries and adrenal glands. Research suggests that DHEA can be converted to testosterone in peripheral tissues. Classified as a nutritional supplement, this compound may be purchased without a prescription. The military and international...

journal_title：Journal of analytical toxicology

authors： Bosy TZ,Moore KA,Poklis A

更新日期：1998-10-01 00:00:00

abstract：:With the increased availability of nitrite-containing commercial products that are used for the adulteration of urine samples in the workplace, it is necessary for laboratories to be able to detect and confirm the presence of nitrite in these samples. We have developed a method to confirm the presence of nitrite in ur...

journal_title：Journal of analytical toxicology

authors： Singh J,Elberling JA,Hemphill DG,Holmstrom J

更新日期：1999-05-01 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