A rapid, accurate, precise and fully automated flow-injection method is described for the determination of 0.02-0.50 pg ml-' cortisone, 0.02-1.00 pg ml-' hydrocortisone and 0.20-5.00 pg ml-' dexamethasone in aqueous solutions and of 1.0-20.0 pg ml-' prednisolone, methylprednisolone, progesterone, co
Flow-injection chemiluminometric determination of some bile acids
β Scribed by Ioannis M. Psarellis; Nikolaos T. Deftereos; Evangelos G. Sarantonis; Antony C. Calokerinos
- Book ID
- 102981251
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 509 KB
- Volume
- 294
- Category
- Article
- ISSN
- 0003-2670
No coin nor oath required. For personal study only.
β¦ Synopsis
The chemiltinometric oxidation of sulphite by cerium(IV), permanganate, bromate and dichromate is sensitized by various bile acids. Each reaction is investigated by flow-injection chemiluminometric analysis and conclusions are drawn about the effectiveness of each oxidant. The reaction with cerium(IV) allows the measurement of 2.00-20.0 pg ml-' cholic acid, 2.00-50.0 pg ml-' urscdeoxycholic acid and 3.00-30.0 pg ml-' chenodeoxycholic and deoxycholic acids with limits of detection of ca. 1 fig ml-'.
π SIMILAR VOLUMES
Reszwed 24th Apnll991) Chcmd~ce 1s found to be generated by the act1011 of lwgemn or hexacyanoferrate(III) on tetracychnes The reaction wltb haxgenm etiblts chenuhumnescence after alkahne degradation of tetracychnes to the correqondmg 180 denvat~ves The reactum wtb hexacysnoferrate(III) occurs after
The chemiluminescent reaction, in alkaline solution, of lucigenin with the products from the photooxidation of ascorbic acid sensitized by toluidine blue has been studied. A flow-injection configuration is proposed for the determination of ascorbic acid over a concentration range of 1 X 10p9-3 X lop
A simple, selective and rapid method for determination of ascorbic acid from fruit juices was developed by combining a flow injection analysis (FIA) system with a chemiluminometric detector and a reactor with L-ascorbate oxidase immobilized on controlled pore glass. It was found that some reducing a