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Journal - Association of Official Analytical Chemists.
Discontinued
Publisher:
Association of Official Analytical Chemists. Arlington, Va : Association of Official Analytical Chemists
Frequency: Bimonthly
Country: United States
Language: English
Author(s):
Association of Official Analytical Chemists.
Start Year:1966 - 1991
Identifiers
| ISSN: | 0004-5756 (Print) 0004-5756 (Linking) |
| NLM ID: | 7505559 |
| (DNLM): | J13460000(s) |
| (OCoLC): | 01034419 |
| Coden: | JANCA2 |
| Classification: | W1 JO223 |
Determination of ampicillin in serum by using simple ultrafiltration technique and liquid chromatographic analysis. A new liquid chromatographic method for determination of ampicillin in canine and equine serum has been developed. The serum sample (500 microL) is vortex-mixed with 20% ethanol (500 microL) and filtered using a 30,000 molecular weight cutoff microseparation tube to separate high molecular weight solutes following low-speed centrifugation. Ampicillin is then separated from other serum components by reverse phase ion-pair liquid chromatography (LC). The ultraviolet (UV) absorbance of the column effluent is monitored at 230 nm. Recoveries of ampicillin from canine serum spiked at concentrations ...
Analysis of pharmaceutical dosage forms for oxfendazole: II. Simultaneous liquid chromatographic determination of oxfendazole and trichlorfon in equine paste. A reverse phase liquid chromatographic procedure is described for the simultaneous determination of oxfendazole [2-(methoxycarbonylamino)-5-phenylsulfinylbenzimidazole] and trichlorfon [(2,2,2-trichloro-1-hydroxyethyl)phosphonic acid dimethyl ester] in equine paste. The sample is extracted by sonication in methanol. Insoluble excipients are removed by centrifugation and an aliquot plus internal standard are diluted with dilution solvent (water-acetonitrile-phosphoric acid, 80 + 20 + 1). The samples are filtered and injected onto a Partisil-5 ODS-3 column with acetonitrile-0.01 M phosphate buff...
Modification of present procedures for the determination of conjugated estrogens (equine) in various low-dosage forms. The presently used procedures for the colorimetric determination of conjugated estrogens (equine) have been modified for the assay of tablets, capsules, liquids, and creams of low declaration per dosage unit. Modifications in sample chromatographic column preparation and elution have provided a more efficient extraction of the steroids.
