Determination of metallothionein in Daphnia magna by modified square wave cathodic stripping voltammetry

2015 ◽  
Vol 52 ◽  
pp. 17-20 ◽  
Author(s):  
Wenhong Fan ◽  
Xiangrui Wang ◽  
Xiaomin Li ◽  
Feng Xue
Keyword(s):  
Daphnia Magna ◽  
Stripping Voltammetry ◽  
Square Wave ◽  
Cathodic Stripping Voltammetry ◽  
Cathodic Stripping

Determination of 2-amino-5-nitrothiazole by square-wave cathodic stripping voltammetry

1995 ◽  
Vol 351 (7) ◽  
pp. 686-688
Author(s):  
P. Hern�ndez ◽  
M. J. Gonz�lez de la Huebra ◽  
J. Vicente ◽  
M. H. Blanco ◽  
L. Hern�ndez
Keyword(s):  
Stripping Voltammetry ◽  
Square Wave ◽  
Cathodic Stripping Voltammetry ◽  
Cathodic Stripping

scholarly journals SQUARE WAVE CATHODIC STRIPPING VOLTAMMETRY ADSORPTIVE FOR NICKEL AND COBALT ANALYSIS

2010 ◽  
Vol 6 (2) ◽  
pp. 161-164
Author(s):  
Saryati Saryati ◽  
Sumardjo Sumardjo
Keyword(s):  
Supporting Electrolyte ◽  
Stripping Voltammetry ◽  
Adsorption Potential ◽  
Adsorption Time ◽  
Square Wave ◽  
Cathodic Stripping Voltammetry ◽  
Complex Nickel ◽  
Electrolyte Ph ◽  
Cathodic Stripping

The adsorptive stripping voltammetric determination of Ni and Co based on adsorption of the Ni/Co and dimethylglioxime (DMG) complex on a hanging mercury drop electrode is studied. The reduction current of the adsorbed DMG complex is measured by square wave cathodic stripping voltammetry method. The effect of various parameters such as ligand concentration, pH of supporting electrolytic, adsorption potential and adsorption time on the current peak of Ni and Co voltammogram were studied. Optimum condition of this method are supporting electrolyte pH 9, DMG concentration 5×10 -4 M, adsorption potential -0.7 V vs Ag/AgCl and adsorption time 180 second. A linier relationship between the current peak and Ni or Co concentration was obtained in the range 5 - 30 ng/mL and the detection limit 0.6 ng/ml for both Ni and Co. The recovery of Ni and Co were 98.11-104.17% using standard biological materials with RSD 2.59 - 10.37%. Based on ";t"; test can be conclude that the result are nearly equal to the standard reference material.   Keywords: adsorptive stripping voltammetric, dimethylglioxime complex, nickel, cobalt

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