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Identification of Prescription Drugs in Adulterated Chinese Herbal Medications

AbstractAnalytical difficulties involved in the detection of a wide range of suspected polar and nonpolar drugs in botanical matrices have been solved by adopting a multipronged approach.

出版机构:Springer US

刊物名称:Pharmaceutical Research

出版时间:1987

ISSN:0724-8741

数据源:报刊文摘

Comparison of On-Column and Splitless Injections for the Capillary Gc Quantitation of Organics Extracted from Landfill Leachatesl

A characteristic fingerprint representing a number of components was consistently found in the analysis of the landfill leachate but not in the drinking water of the private residences located on an adjoining road.

出版机构:Taylor & Francis

刊物名称:Analytical Letters

出版时间:1987

ISSN:0003-2719

数据源:报刊文摘

The Origin and Fate of Isoprenoid C20 and C15 Sulphur Compounds in Sediments and Oils

The identification of isoprenoid C20 and C15 sulphur compounds in Rozel Point Oil is described. The occurrence of isoprenoid-thiophenes, -thiolanes, -benzothiophenes, -bithiophenes, -(thienyl)alkylthiophenes and -thienylthiolanes in this oil and in other oils and sediments is reported.

出版机构:Taylor & Francis

刊物名称:International Journal of Environmental & Analytical Chemistry

出版时间:1987

ISSN:0306-7319

数据源:报刊文摘

Laser Mass Spectrometry of Organophosphorus Pesticides and Related Compounds

Laser mass spectra obtained for 20 organophosphorus (OP) compounds were systematically evaluated for groups containing analogous structural features. Variations in fragmentation can be understood based on simple organic reactions.

出版机构:Taylor & Francis

刊物名称:International Journal of Environmental & Analytical Chemistry

出版时间:1987

ISSN:0306-7319

数据源:报刊文摘

An automated mechanism for protection of mass spectrometry sampling tubing

AbstractThe usefulness of medical mass spectrometers in intensive care units can be limited by too frequent obstruction of the tubing that transports gases from the patients to the analyzing unit.

出版机构:Springer Netherlands

刊物名称:Journal of Clinical Monitoring and Computing

出版时间:1987

ISSN:1387-1307

数据源:报刊文摘

Determination of the structure of sulfated tetra- and pentasaccharides obtained by alkaline borohydride degradation of hen ovomucin. A fast atom bombardment-mass spectrometric and1H-NMR spectroscopic

AbstractAlkaline borohydride reductive cleavage of hen ovomucin resulted in the release of a series of neutral and acidic oligosaccharide-alditols.

出版机构:Springer US

刊物名称:Glycoconjugate Journal

出版时间:1987

ISSN:0282-0080

数据源:报刊文摘

Accuracy of a central mass spectrometer system at high respiratory frequencies

AbstractWe have shown that in a laboratory setting the long lengths of sampling catheters necessary to access a central mass spectrometer restrict the high-frequency response of the system. Reported here are the results from a clinically operating Perkin-Elmer Advantage system.

出版机构:Springer Netherlands

刊物名称:Journal of Clinical Monitoring and Computing

出版时间:1987

ISSN:1387-1307

数据源:报刊文摘

Gas chromatography-mass spectrometry analysis of tert.-butyldimethylsilyl derivatives of 2-acetylaminofluorene and metabolites in isolated rat hepatocytes

This new gas chromatography-mass spectrometry method allowed the separation, identification and quantitation of seven known metabolites comprising five arylhydroxylated compounds, 2-aminofuorene and N-hydroxy-2-acetylaminofuorene.

出版机构:Springer Netherlands

刊物名称:Cell Biology and Toxicology

出版时间:1987

ISSN:0742-2091

数据源:报刊文摘

Positive and negative ion mass spectrometry of benzophenones, the acid-hydrolysis products of benzodiazepines

SummaryPositive electron impact (EI), positive chemical ionization (CI), and negative CI mass spectra of 14 benzophenones are presented. In the positive EI mode, intense molecular peaks appeared for most compounds; some other peaks due to splitting at both sides of the carbonyl group also appeared.

出版机构:Springer Verlag

刊物名称:International Journal of Legal Medicine

出版时间:1987

ISSN:0937-9827

数据源:报刊文摘

Growth rate and methane affinity of a turbidostatic and oxystatic continuous culture ofMethylococcuscapsulatus (Bath)

SummaryA turbidostatic and oxystatic fermentation system was used to study the growth kinetic ofMethylococcuscapsulatus (Bath). Dissolved oxygen and methane concentrations were measured continuously with membrane inlet mass spectrometry. The specific growth rate was found to increase from 0.

出版机构:Springer Netherlands

刊物名称:Biotechnology Letters

出版时间:1987

ISSN:0141-5492

数据源:报刊文摘