Salicylate Ion-Selective Electrode Based on a Calix[4]arene as Ionophore

2015 ◽  
Vol 27 (7) ◽  
pp. 1676-1684 ◽  
Author(s):  
Melek Nur Ayanoğlu ◽  
H. Elif Kormalı Ertürün ◽  
Ayça Demirel Özel ◽  
Özlem Şahin ◽  
Mustafa Yılmaz ◽  
...  
1998 ◽  
Vol 9 (3) ◽  
pp. 249-251 ◽  
Author(s):  
Julio Cesar B. Fernandes ◽  
Carlos Alexandre B. Garcia ◽  
Luciane A. Grandin ◽  
Graciliano de Oliveira Neto ◽  
Oswaldo E.S. Godinho

2007 ◽  
Vol 23 (2) ◽  
pp. 171-176 ◽  
Author(s):  
Guangrong YE ◽  
Yaqin CHAI ◽  
Yuan RUO ◽  
Lu ZHOU ◽  
Yan LI ◽  
...  

1981 ◽  
Vol 46 (2) ◽  
pp. 368-376 ◽  
Author(s):  
Josef Veselý

Titration of sulphates with lead perchlorate employing lead ion selective electrode indication was studied using additions of various organic solvents at different pH' and ionic strength values. As the optimum emerged systems with 60-70% 1,4-dioxane, pH' 5.3-5.6. After dehydration with sodium hydroxide, dioxane must be freed from the electrode surface-oxidizing impurities by their reduction with sodium metal and subsequent distillation. The method was applied to determination of sulphates in mountain spring waters. Units of ppm can be determined; the limit of determination, however, depends considerably on the content of dioxane, total salt content in the sample, and speed of the semi-automatic titration. Lead can be determined with EDTA in concentrations down to c(Pb2+) = 5 . 10-6 mol l-1.


1986 ◽  
Vol 51 (11) ◽  
pp. 2437-2443
Author(s):  
František Kopecký ◽  
Mária Vojteková ◽  
Milan Pešák

The conventional activity of chloride ions was measured by an ion-selective electrode at 25 °C in aqueous solutions of benflurone, i.e. 5-(2-(N,N-dimethylamino)ethoxy)-7-oxo-7H-benzo(c)fluorene hydrochloride, without or with additions of KCl. These results suggest a gradual association of benflurone; the formation of a hetero-associate, (BH+)2Cl-, followed by higher associates was evaluated in the measured range up to 0.1 mol l-1.


2006 ◽  
Vol 112 (1-2) ◽  
pp. 13-18 ◽  
Author(s):  
R. Le Van Mao ◽  
N. Al-Yassir ◽  
L. Lu ◽  
N. T. Vu ◽  
A. Fortier

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