Results 231 to 240 of about 177,068 (269)
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Square-wave adsorptive cathodic stripping voltammetry of pantoprazole
Journal of Pharmaceutical and Biomedical Analysis, 2003Adsorption and reduction of pantoprazole were investigated by cyclic and square-wave voltammetry on a hanging mercury drop electrode in Britton-Robinson buffers at pH 2.0-11.0. The reduction process gave rise to a single peak within the entire pH range.
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The determination of platinum in sea water by adsorptive cathodic stripping voltammetry
Analytica Chimica Acta, 1988Abstract The catalytic effect of the formazone complex with platinum on the development of hydrogen at a mercury electrode is used to provide a very sensitive method of determining dissolved platinum in fresh and sea water by adsorptive cathodic stripping voltammetry. The optimal analytical conditions include the addition of 0.012% (w/v) formaldehyde,
Constant M.G. van den Berg +1 more
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Determination of trace tin by catalytic adsorptive cathodic stripping voltammetry
Analytica Chimica Acta, 2005Abstract A highly sensitive and selective catalytic adsorptive cathodic striping procedure for the determination of trace tin is presented. The method is based on adsorptive accumulation of the Sn(IV)–3,4-dihydroxybenzoic acid (DHBA) complex onto a hanging mercury drop electrode, followed by reduction of the adsorbed species. The reduction current is
Yi-Heng Li, Hui Long, Fang-Qin Zhou
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Copper complexing capacities of freshwaters by adsorptive cathodic stripping voltammetry
Analytica Chimica Acta, 2000Abstract Copper complexation in freshwater was investigated by cathodic stripping voltammetry (CSV) with ligand competition using 8-hydroxyquinoline (oxine). Complexing capacity titrations were used to determine concentrations of natural copper complexing ligands and their conditional stability constants. The effect of the adsorption potential on the
Li Jin, Niall J. Gogan
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Talanta, 2000
A very sensitive and selective catalytic adsorptive cathodic stripping procedure for trace measurements of cobalt is presented. The method is based on adsorptive accumulation of the cobalt-MTB (methyl thymol blue) complex onto a hanging mercury drop electrode, followed by reduction of the adsorbed species by voltammetric scan using differential pulse ...
A, Safavi, E, Shams
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A very sensitive and selective catalytic adsorptive cathodic stripping procedure for trace measurements of cobalt is presented. The method is based on adsorptive accumulation of the cobalt-MTB (methyl thymol blue) complex onto a hanging mercury drop electrode, followed by reduction of the adsorbed species by voltammetric scan using differential pulse ...
A, Safavi, E, Shams
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A Kinetic Study of Nickel Complexation in Model Systems by Adsorptive Cathodic Stripping Voltammetry
Environmental Science & Technology, 2001Adsorptive cathodic stripping voltammetry (AdCSV) in conjunction with the competing ligand-exchange method (CLEM) was investigated as a tool for measuring dissociation rate coefficients of nickel complexes in model systems. Dimethylglyoxime (DMG) was used as the competing ligand.
V, Celo +3 more
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Talanta, 2000
A reliable and very sensitive procedure for the determination of trace levels of molybdenum in seawater is proposed. The complex of molybdenum with 8-hydroxyquinoline (Oxine) is analyzed by cathodic stripping square-wave voltammetry based on the adsorption collection onto a hanging mercury drop electrode (HMDE).
Y C, Sun, J, Mierzwa, C R, Lan
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A reliable and very sensitive procedure for the determination of trace levels of molybdenum in seawater is proposed. The complex of molybdenum with 8-hydroxyquinoline (Oxine) is analyzed by cathodic stripping square-wave voltammetry based on the adsorption collection onto a hanging mercury drop electrode (HMDE).
Y C, Sun, J, Mierzwa, C R, Lan
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Journal of Hazardous Materials, 2009
In this work bovine albumin was used innovatively as a medium for adsorptive accumulation of Se-I(2) on thin mercury film electrode. Se-I(2) was formed by reaction between Se(IV) and iodide in HCl media. The adsorbed Se-I(2) was stripped in 0.05 M HCl by differential pulse cathodic potential scan.
Mehdi, Ashournia, Alireza, Aliakbar
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In this work bovine albumin was used innovatively as a medium for adsorptive accumulation of Se-I(2) on thin mercury film electrode. Se-I(2) was formed by reaction between Se(IV) and iodide in HCl media. The adsorbed Se-I(2) was stripped in 0.05 M HCl by differential pulse cathodic potential scan.
Mehdi, Ashournia, Alireza, Aliakbar
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Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 1987
Abstract A voltammetric method for the determination of 3-mercapto-D-2-methylpropanoyl-L-proline, a hypotensive drug whose pharmaceutical name is Captopril (CPT), in the concentration range from 9.0×10 −10 M to 3×10 −6 M , is described. In this range the peak current increases linearly with drug concentration even when different collection periods
PASSAMONTI, Paolo +2 more
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Abstract A voltammetric method for the determination of 3-mercapto-D-2-methylpropanoyl-L-proline, a hypotensive drug whose pharmaceutical name is Captopril (CPT), in the concentration range from 9.0×10 −10 M to 3×10 −6 M , is described. In this range the peak current increases linearly with drug concentration even when different collection periods
PASSAMONTI, Paolo +2 more
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Determination of aflatoxins B1 and B2 by adsorptive cathodic stripping voltammetry in groundnut
Food Chemistry, 2009Abstract In this study, adsorptive stripping voltammetry was proposed for determination of aflatoxins B1 (AFB1) and B2 (AFB2) using hanging mercury drop electrode (HMDE) as the working electrode. Both aflatoxins were found to adsorb and undergo irreversible reduction reaction at the working mercury electrode.
R. Hajian, A.A. Ensafi
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