5,5-DIETHYLBARBITURATE TUBULAR ELECTRODE FOR USE IN FLOW-INJECTION DETECTION SYSTEMS

• Type: Article in International Scientific Journal
• Date: 1990

Authors

LIMA, JLFC (Author) FFUP; MONTENEGRO, MCBSM (Author) FFUP; ALONSO, J (Author) Other; BARTROLI, J (Author) Other; RAURICH, JG (Author) Other

Journal

Title: Analytica Chimica Acta

Vol. 234

Pages: 221-225

ISSN: 0003-2670

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 18 Citations

Scopus - 17 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-001-RN3

DOI: 10.1016/s0003-2670(00)83560-6

Abstract (EN): The construction, assessment and pharmaceutical appalications of a tubular potentiometric detector sensitive to the 5,5-diethylbarbiturate anion based on quaternary ammonium salt (tetraoctylammonium5,5-diethylbarbiturate) dissolved in o-nitrophenyl octyl ether immobilized in PVC are described. The intrinsic characteristics of the tubular electrode were determined in a low-dispersion manifold and compared with those of a conventional-shaped electrode with no internal reference solution and incorporating the same sensor. The behaviour of a double-channel flow-injection manifold with the same potentiometric detector was evaluated to assess its applicability to the determination of 5,5-diethylbarbiturate in pharmaceutical preparations. Data obtained in the determination of the anion in the latter matrices are presented and compared with those obtained by the conventional British Pharmacopoeia method. © 1990.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5