2015
DOI: 10.1007/s10008-015-2832-9
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Abstract: A citrate selective coated graphite electrode (CGE) based on zinc monoamino-phthalocyanine functionalized graphene (ZnMAPc-G) has been developed and potentiometrically evaluated. The composition of the membrane prepared from ZnMAPc-G, DOS, and PVC in THF was optimized. The sensor based on ZnMAPc-G containing 5 % ZnMAPc possessed the optimum performance in glycine buffer 0.01 M of pH 3.9 with a near Nernstian slope of −57.3±0.5 mV/decade, a linear range of 8×10 −7 -1×10 −2 mol L −1 and a detection limit of 5×10… Show more

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Cited by 14 publications
(3 citation statements)
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“…The classical ion-selective electrodes (ISEs), due to their design, e.g., large dimensions, are not compatible with modern clinical applications, which aims at reducing the sample volume. For this reason, for decades, vast part of research was focused on the elimination of the classic redox system (e.g., Ag/AgCl with liquid internal electrolyte) by designing electrodes in solid-contact technology [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The use of solid-contact technology enabled design of the ISEs in planar technology, their miniaturization, and unquestionably widening range of implementation of ISEs, including clinical and biological analyses of small volume samples [25][26][27][28].…”
Section: Introductionmentioning
confidence: 99%
“…The classical ion-selective electrodes (ISEs), due to their design, e.g., large dimensions, are not compatible with modern clinical applications, which aims at reducing the sample volume. For this reason, for decades, vast part of research was focused on the elimination of the classic redox system (e.g., Ag/AgCl with liquid internal electrolyte) by designing electrodes in solid-contact technology [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The use of solid-contact technology enabled design of the ISEs in planar technology, their miniaturization, and unquestionably widening range of implementation of ISEs, including clinical and biological analyses of small volume samples [25][26][27][28].…”
Section: Introductionmentioning
confidence: 99%
“…Other widespread preservative agents are citrates and their salts. For their electrochemical determination, the surface of glassy carbon electrode (GCE) was modified with monoamiono-substituted zinc(II) phthalocyanine covalently attached to graphene oxide [19]. The fabricated sensor revealed in potentiometric studies a 500 nM limit of detection of citrate and a linear range of 0.8 µM-10 mM.…”
Section: Food Pollutants and Components Sensingmentioning
confidence: 99%
“…Carbon nanomaterials, including single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), nanofibers, activated carbon and graphene, have unique properties such as chemical stability and durability, high electrical conductivity, mechanical strength and a high surface-to-volume ratio which collectively makes them an excellent choice for electrochemical sensors and biosensors development [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. Carbon nanotubes (CNTs) are an excellent and promising option in fabricating electrochemical sensors owing to their remarkable electrical and thermal conductivity, high surface area, chemical stability and mechanical properties [ 11 , 12 , 13 , 14 ].…”
Section: Introductionmentioning
confidence: 99%