Indirect determination of phosphate and arsenale using silver ion-selective electrode

1974 ◽  
Vol 272 (1) ◽  
pp. 44-45 ◽  
Author(s):  
Takashi Tanaka ◽  
Kazuo Hiiro ◽  
Akinori Kawahara
2015 ◽  
Vol 12 (1) ◽  
pp. 188-196
Author(s):  
Baghdad Science Journal

A new method for construction ion-selective electrode (ISE) by heating reaction of methyl orange with ammonium reineckate using PVC as plasticizer for determination methyl orange and determination Amitriptyline Hydrochloried drug by formation ion-pair on electrode surface . The characteristics of the electrode and it response as following : internal solution 10-4M , pH (2.5-5) ,temperature (20-30) and response time 2 sec. Calibration response for methyl orange over the concentrationrange 10-3 -10-9 M with R=0.9989 , RSD%=0.1052, D.O.L=0.315X10-9 MEre%=(-0.877- -2.76) , Rec%.=(97.230 -101.711) .


1979 ◽  
Vol 44 (6) ◽  
pp. 1742-1746 ◽  
Author(s):  
Adam Košturiak ◽  
Dagmar Kalavská

A procedure is suggested for direct volumetric determination of cobalt with a sodium diethyldithiocarbaminate titrant solution in the medium of 80% dimethylformamide, using indication with a silver ion selective electrode. The procedure was applied to the cobalt determination in Co-Sm-Fe alloys. The method was adapted for the determination of cobalt in aqueous solution by back titration of excess sodium diethyldithiocarbaminate with a silver nitrate titrant solution or with generated Ag(I), using the same indication or biamperometric indication.


2009 ◽  
Vol 42 (17) ◽  
pp. 2928-2936 ◽  
Author(s):  
Zenovia Moldovan ◽  
Sultana Niţă ◽  
Cristina Bozdoacă ◽  
Andrei A. Bunaciu ◽  
Hassan Y. Aboul-Enein

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.


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