Differential pulse anodic stripping voltametry

Figure 7.11. DPASV (differential pulse anodic stripping voltametry) polarograms obtained for the exudate solutions obtamed from either Fe-deficient (-Fe) or Fe-sufficient (4- Fe) ryegrass Lolium perenne ). at two levels of addition of Cu (0.14 and 0.71 xM). The dashed line indicates the electric potential corresponding to the labile Cu species (presumably dominated by Cu- ) that was obtained in the Cu solution without exudates (0.011 V). The shift of the peak toward more negative electric potential values and lower intensities is indicative of increasing complexahon of Cu with decreasing Cu concentrations and increasing phytosiderophore secretion as a result of Fe deficiency. (Adapted from Thomas et al., 2005.)...

Duinker, J.C. and Kramer, C.J.M., 1977. An experimental study on the speciation of dissolved zinc, cadmium, lead and copper in river Rhine and North Sea water, by differential pulsed anodic stripping voltametry. Mar. Chem., 5 207—228. 

Franke, J.P. and Zeeuw, R.A. (1976) Differential pulse anodic stripping voltametry as a rapid screening technique for heavy metal intoxications. Arch. Toxicol., 37, 47-55. 

Electrothermal vaporization isotopa dilution inductively coupled plasma mass spectrometry (ETV-ID-ICP-MS) has been utilized for the analysis of cadmium in fish samples. Radiochemical neutron activation analysis (RNAA), differential pulse anodic stripping voltametry (ASV) and the calorimetric dithizone method may also be employed. The AAS techniques appear to be most sensitive, with cadmium recoveries ranging from 94 to 109% (Koplan, 1999). 

In real samples, the voltammetric responses of differential pulse anodic stripping voltametry have been applied to investigate the Cd-binding properties in MLPs from mussels. The existence of two different Cd-MLP complexes was thus demonstrated. 

Anodic stripping voltammetry, potentiometric stripping voltametry, and differential pulse polarography are used for the simultaneous determination of up to 10 analytes at extremely low concentrations (detection limits <0.01 pgl ). Electroanalytical techniques are applicable for 30 elements. Stripping analysis allows differentiation between chemical forms but is subject to interference from adsorption... 

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