Sensors 2006, 6(5), 480-491; doi:10.3390/s6050480
Article

An Ion-selective Electrode for Anion Perchlorate in Thick-film Technology

1, 1, 1, 1, 1,* email, 2,* email and 2
Received: 23 January 2006; Accepted: 26 March 2006 / Published: 7 April 2006
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The ionophore 1,4,7,10,13-penta(n-octyl)-1,4,7,10,13-pentaazacyclopentadecane(L1) was used for the development of miniaturised perchlorate-selective electrodes in thick-film technology. Different PVC membranes containing L1 and the plasticizers o-nitrophenyloctyl ether (NPOE), dibutyl phthalate (DBP), bis(2-ethylhexyl)sebacate (DOS) and dibutylsebacate (DBS) were prepared and placed on a graphite working electrode manufactured byusing thick film serigraphic technology. The perchlorate selective electrode containing DBSas plasticizer showed a potentiometric Nernstian response of -57 mV per decade in a rangeof perchlorate concentration from 1 x 10-4 to 1 x 10-1 M with a detection limit of 5 x 10-5 M.The ion selective electrodes containing DBP and NPOE as plasticizers exhibit a workingrange from 6.3 x 10-5 to 1 x 10-1 M and 7.4 x 10-5 to 1 x 10-1 M for perchlorate, respectively,with a detection limit of ca. 2.2 x 10-5 M. For all three electrodes a response time of ca. 5 s was found. The prepared electrodes do not show appreciable decay of the slope for at least 25 days. Potentiometric selectivity coefficients (log KpotClO4-,X-) with respect to the primaryanion perchlorate were evaluated using the fixed interference method. These coefficients areof the order of 10-1.7 or smaller, indicating the relatively poor interference of the differentanions studied.
Keywords: ion-selective electrodes; perchlorate; thick-film.
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MDPI and ACS Style

Segui, M.J.; Lizondo-Sabater, J.; Martínez-Máñez, R.; Sancenón, F.; Soto, J.; García-Breijo, E.; Gil, L. An Ion-selective Electrode for Anion Perchlorate in Thick-film Technology. Sensors 2006, 6, 480-491.

AMA Style

Segui MJ, Lizondo-Sabater J, Martínez-Máñez R, Sancenón F, Soto J, García-Breijo E, Gil L. An Ion-selective Electrode for Anion Perchlorate in Thick-film Technology. Sensors. 2006; 6(5):480-491.

Chicago/Turabian Style

Segui, María J.; Lizondo-Sabater, Josefa; Martínez-Máñez, Ramón; Sancenón, Félix; Soto, Juan; García-Breijo, Eduardo; Gil, Luís. 2006. "An Ion-selective Electrode for Anion Perchlorate in Thick-film Technology." Sensors 6, no. 5: 480-491.

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