TY - JOUR
T1 - 5,5-Diethylbarbiturate tubular electrode for use in flow-injection detection systems
AU - Lima, José L.F.C.
AU - Montenegro, M. Conceição B.S.M.
AU - Alonso, J.
AU - Bartroli, J.
AU - Raurich, J. G.
PY - 1990/1/1
Y1 - 1990/1/1
N2 - 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.
AB - 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.
U2 - 10.1016/S0003-2670(00)83560-6
DO - 10.1016/S0003-2670(00)83560-6
M3 - Article
VL - 234
SP - 221
EP - 225
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
SN - 0003-2670
IS - C
ER -