METHYLENE-BLUE POLY(VINYL CHLORIDE) MEMBRANE-ELECTRODE BASED ON THE METHYLENE-BLUE TETRAPHENYLBORATE ION-PAIR COMPLEX AND ITS APPLICATION TO PHARMACEUTICAL ANALYSIS

Authors
WEN ML CHEN X ZHAO YB WANG CY
Citation
Ml. Wen et al., METHYLENE-BLUE POLY(VINYL CHLORIDE) MEMBRANE-ELECTRODE BASED ON THE METHYLENE-BLUE TETRAPHENYLBORATE ION-PAIR COMPLEX AND ITS APPLICATION TO PHARMACEUTICAL ANALYSIS, Analytical letters, 31(7), 1998, pp. 1121-1130
Citations number
20
Categorie Soggetti
Chemistry Analytical
Journal title
Analytical letters → ACNP
ISSN journal
00032719
Volume
31
Issue
7
Year of publication
1998
Pages
1121 - 1130
Database
ISI
SICI code
0003-2719(1998)31:7<1121:MPCMBO>2.0.ZU;2-#
Abstract
A methylene blue (MB) poly (vinyl chloride) membrane electrode based o n MBtetraphenylborate (TPB) ion-pair complex is described. The linear response covers the range 1x10(-2) -1x10(-6) mof dm(-3) MB solution, w ith a slope of 56.5+/-0.5 mv/decade (pH range 3.0-1 0.0). The detectio n limit is 7.75 x 10(-7) mol dm(-3). The electrode shows' stability, g ood reproducibility and fast response. Interferences from common inorg anic cations and some organic bases are negligible. These characterist ics of the electrode enabled it to be used successfully for the determ ination of MB in injection.