The determination of thermal junction potential difference

2018 ◽  
Vol 61 (8) ◽  
pp. 1020-1024
Author(s):  
Nestor Uwitonze ◽  
Wei Chen ◽  
Da Zhou ◽  
Zhengda He ◽  
Yan-Xia Chen
Keyword(s):  
Potential Difference ◽  
Junction Potential

Determination of the local contact potential difference of PTCDA on NaCl: a comparison of techniques

2009 ◽  
Vol 20 (26) ◽  
pp. 264012 ◽  
Author(s):  
S A Burke ◽  
J M LeDue ◽  
Y Miyahara ◽  
J M Topple ◽  
S Fostner ◽  
...  
Keyword(s):  
Contact Potential Difference ◽  
Potential Difference ◽  
Contact Potential ◽  
Local Contact ◽  
Comparison Of Techniques

scholarly journals DETERMINATION OF ALKALINITY AND DISSOCIATION CONSTANTS OF HIGH SALINITY WATERS: USE OF F5BC TITRATION FUNCTION

2018 ◽  
Vol 35 (2) ◽  
pp. 79
Author(s):  
Bernadete F. Cavalcanti ◽  
Lourdes Cristina Lucena Agostinho ◽  
Luciano Nascimento
Keyword(s):  
Natural Waters ◽  
Dissociation Constants ◽  
A Priori ◽  
Linear Regression Analysis ◽  
Liquid Junction ◽  
Carbonate System ◽  
Ph Measurements ◽  
Apparent Dissociation Constant ◽  
Junction Potential

Measurements of parameters expressed in terms of carbonic species such as Alkalinity and Acidity of saline waters do not analyze the influence of external parameters to the titration such as Total free and associated Carbonic Species Concentration, activity coefficient, ion pairing formation and Residual Liquid Junction Potential in pH measurements. This paper shows the development of F5BC titration function based on the titrations developed by Gran (1952) for the carbonate system of natural waters. For practical use, samples of saline watersfrom Pocinhos reservoir in Paraiba were submitted to titration and linear regression analysis. Results showed that F5BC involves F1x and F2x Gran functions determination, respectively, for Alkalinity and Acidity calculations without knowing “a priori” the endpoint of the titration. F5BC also allows the determination of the First and Second Apparent Dissociation Constant of the carbonate system of saline and high ionic strength waters.

Determination of the electrostatic potential difference between DNA and the solution containing it: A kinetic approach

2007 ◽  
Vol 441 (1-3) ◽  
pp. 148-151 ◽  
Author(s):  
Mario Carrasco ◽  
Raquel Coca ◽  
Isabel Cruz ◽  
Silvia Daza ◽  
Manuela Espina ◽  
...  
Keyword(s):  
Electrostatic Potential ◽  
Potential Difference ◽  
Kinetic Approach

Détermination du bore inorganique dans l'Estuaire du Saint-Laurent

1978 ◽  
Vol 15 (4) ◽  
pp. 618-625 ◽  
Author(s):  
E. Pelletier ◽  
J. Lebel
Keyword(s):  
Coastal Waters ◽  
Ionization Constant ◽  
Accurate Method ◽  
Ionic Interactions ◽  
Lawrence Estuary ◽  
Analytical Error ◽  
Borate Complex ◽  
St Lawrence Estuary ◽  
Junction Potential

A precise and accurate method for the determination of inorganic boron in estuarine and coastal waters has been developed. The method takes into account the effects of ionic interactions in seawater on the electrode's junction potential, and on the ionization constant of the mannitol–borate complex. The analytical error is less than ±0.3% over the range of 0.35–4.45 mg B/kg seawater. This method, applied to 42 samples from the St. Lawrence Estuary, has allowed us to show that the B–Cl ratio varies in the region studied, and to localize regions that are deficient in dissolved inorganic boron.

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