Potentiometric sensors quantification

Makarova, N. M. and Kulapina, E. G. (2009). Quantification of binary and ternary mixtures of homologous nonylphenol polyethoxylates using the potentiometric sensor array. Electroanalysis 21(3-5), 521-529. 

Sulfadimethoxine (SMD) is a dmg frequently used to prevent the spreading of diseases in freshwater fish aquaculture, but its control is important to avoid environmental contamination. A potentiometric sensor selective to SMD was built inside a micropipette tip [211] by immersing a PVC membrane loaded with 1 % of meTO-tetra(phenyl)porphyrinate manganese(lll) chloride in a reference solution. This electrode gave near Nemstian response (54.1 mV/decade) and excellent detection limit (2.4 x 10 mol L ) was attained. For the quantification of SO2, a selective electrode was prepared by incorporation of Cio-(tetraphenyl)porphyr-inate zinc(ll) in a PVC membrane plasticized with 2-nitrophenyl-phenylether [212]. The new electrode presented a selective response to sulphite, with good linearity in an interval larger than four decades of concentration and slope of -59.5 mV per decade, and detection limit of 3.7 x 10 mol L . This sensor presented high... 

The multitransduction of signals was explored for the quantification of metals in solution. A polymeric membrane sensor was developed by incorporation of 5,10,15,20-tetra(ferrocenyl)porphyrin [248]. Simultaneous optical and potentiometric measurements made possible the detection of lead in the 2.7 x 10 to... 

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