Direct determination of arsenic in urine by differential pulse anodic stripping voltammetry

1981 ◽  
Vol 3 (1) ◽  
pp. 1042-1047 ◽  
Author(s):  
J. P. Franke ◽  
R. A. De Zeeuw
Keyword(s):  
Anodic Stripping Voltammetry ◽  
Direct Determination ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Anodic Stripping

scholarly journals Direct Determination of Zn, Cd, Pb and Cu in Wine by Differential Pulse Anodic Stripping Voltammetry

Beverages ◽  
2019 ◽  
Vol 5 (1) ◽  
pp. 6 ◽  
Author(s):  
Juliana Maciel ◽  
Michele Souza ◽  
Lisiane Silva ◽  
Daiane Dias
Keyword(s):  
Anodic Stripping Voltammetry ◽  
Direct Determination ◽  
Standard Addition ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Anthropogenic Sources ◽  
Organic Substances ◽  
Addition Method ◽  
Anodic Stripping

Metals in wine can originate from natural and anthropogenic sources and their concentrations have significant effects on wine proprieties as well in its conservation. In this work, direct and simultaneous determinations of Zn, Cd, Pb and Cu in wine samples were carried out by differential pulse anodic stripping voltammetry without any steps of previous pretreatment. The samples analyzed presented concentration levels from 4.64 to 69.3 µg L−1 of Zn, from 1.74 to 5.25 µg L−1 of Cd, from 4.57 to 17.9 µg L−1 of Pb and from 1.0 to 10.3 µg L−1 of Cu. Accuracy was evaluated with the standard addition method and recoveries ranged from 82.5 and 130.8% for Zn, from 85.7 to 107.0% for Cd, from 89.7 to 101.0% for Pb and from 81.4 to 105.9% for Cu. With the application of this method, it was possible to quantify the metals in a simple and easy way not requiring sample preparation or other approaches for the destruction of organic substances.

scholarly journals DIFFERENTIAL PULSE ANODIC STRIPPING VOLTAMMETRY FOR DETERMINATION OF SOME HEAVY METALS IN URANIUM

2010 ◽  
Vol 9 (2) ◽  
pp. 243-246
Author(s):  
Saryati Saryati
Keyword(s):  
Heavy Metals ◽  
Anodic Stripping Voltammetry ◽  
Direct Determination ◽  
Stripping Voltammetry ◽  
Differential Pulse ◽  
Buffer Solution ◽  
Carbonate Buffer ◽  
Relative Standard ◽  
Anodic Stripping

The direct determination of some metals impurity in uranium by using differential pulse anodic stripping voltammetry (DPASV) method at a hanging mercury drop electrode and in a carbonate buffer media was developed. It was found that the carbonate buffer show the strongest affinity for uranium and gives the best separation between the DPASV peaks of heavy metals impurities. The carbonate concentration markedly affects the oxidation and reduction the major and the minor constituents of the uranium samples. In 0.1 M carbonate buffer solution pH 10, copper, bismuth, thalium, lead, cadmium, zinc, could be determined without the removal of the uranium matrix. Recovery and relative standard deviation (RSD) of this method was in the range of 174% - 85.2% for recovery and 36.8% - 1.2% for RSD. The larger error of analytical result was obtained for Zn at low concentration. In general, the analytic results error and RSD decreased with increasing metals concentration.   Keywords: heavy metal determination, differential pulse anodic stripping voltammetry, uranium

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