Results 221 to 230 of about 11,082 (256)
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Analytical Chemistry, 1996
A differential pulse anodic stripping voltammetric (DPASV) method was used to differentiate between the cadmium species Cd(2+) and MeCd(+) (Me = methyl) in aquatic systems. These two species show peaks in the DPASV voltammogram which differ by 112 mV.
R, Pongratz, K G, Heumann
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A differential pulse anodic stripping voltammetric (DPASV) method was used to differentiate between the cadmium species Cd(2+) and MeCd(+) (Me = methyl) in aquatic systems. These two species show peaks in the DPASV voltammogram which differ by 112 mV.
R, Pongratz, K G, Heumann
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Determination of indole in shrimps by differential-pulse voltammetry in an emulsified medium
The Analyst, 1990A method has been developed to determine indole in shrimps by differential-pulse voltammetry at a Pt electrode in an emulsified medium, after extraction into hexane - ethyl acetate (49 + 1). The standard additions method was used in order to minimise the matrix effect.
J M, Pingarrón Carrazón +2 more
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Differential pulse adsorptive stripping voltammetry of osmium-modified peptides
Bioelectrochemistry, 2002Complexes of osmium tetroxide with nitrogen ligands were developed and used in our laboratory as probes of the DNA structure. Here, we show that the complex of osmium tetroxide with 2,2'-bipyridine (Os,bipy) can be used for modification and electrochemical detection of proteins at neutral pH.
Sabina, Billová +2 more
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Simultaneous determination of three herbicides by differential pulse voltammetry and chemometrics
Journal of Environmental Science and Health, Part B, 2011A novel differential pulse voltammetry method (DPV) was researched and developed for the simultaneous determination of Pendimethalin, Dinoseb and sodium 5-nitroguaiacolate (5NG) with the aid of chemometrics. The voltammograms of these three compounds overlapped significantly, and to facilitate the simultaneous determination of the three analytes ...
Ni, Yongnian, Wang, Lin, Kokot, Serge
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Direct determination of lead in blood by differential pulse stripping voltammetry
Clinica Chimica Acta, 1987A simple and rapid method for determination of lead in blood by differential pulse stripping voltammetry (DPS) without preliminary mineralization of the sample, is described. Lead determination was performed in native samples of blood in the electrolyte of Britton-Robinson buffer (pH 5-5.5).
M, Nedeljković +3 more
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Determination of isopropylmethylphenols in black seed oil by differential pulse voltammetry
Phytochemical Analysis, 2004AbstractA differential pulse voltammetric method is presented for the determination of isopropylmethylphenols (carvacrol and/or thymol) in phytotherapeutic black seed oils. The voltammetric behaviours of these phenols were examined in various buffer systems over the pH range 3.5–10.0.
Astrid, Michelitsch +4 more
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Determination of chlorite in drinking water by differential pulse voltammetry on graphite
Analytical and Bioanalytical Chemistry, 2004The chlorite ion is an unavoidable by-product of the disinfection of drinking water by means of chlorine dioxide. The maximum concentration values of chlorite accepted in many countries' regulations range from 0.2 to 1.0 mg L(-1). A simple, inexpensive and quickly set up voltammetric procedure for the on-site determination of chlorite in drinking water
PEZZATINI, GIOVANNI +4 more
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Determination of nickel in human nails by adsorption differential-pulse voltammetry
The Analyst, 1985A procedure is described for the determination of nickel in human nails, which consists in a simple wet digestion followed by quantitation by adsorption differential-pulse voltammetry. This procedure produced more reliable results for low nickel levels than atomic-absorption spectrometry; for unexposed individuals, mean values for nickel in finger-and ...
Gammelgaard, Bente, Andersen, J R
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Talanta, 1986
This work describes optimal conditions for the determination of chlorpromazine and thioridazine by DPV, with a detection limit of 4.0 x 10(-7)M (0.16 microg/ml). The well-defined peaks indicate that direct measurement in a medium of 0.03 M perchloric acid in acetonitrile is possible and the use of DPV is advantageous when small amounts are to be ...
N, Zimová, I, Nemec, J, Zima
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This work describes optimal conditions for the determination of chlorpromazine and thioridazine by DPV, with a detection limit of 4.0 x 10(-7)M (0.16 microg/ml). The well-defined peaks indicate that direct measurement in a medium of 0.03 M perchloric acid in acetonitrile is possible and the use of DPV is advantageous when small amounts are to be ...
N, Zimová, I, Nemec, J, Zima
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Determination of lead in paint by differential-pulse anodic-stripping voltammetry
The Analyst, 1978A procedure for the determination of lead in paints by differential-pulse anodic-stripping voltammetry is presented. Only a few milligrams of sample are required for the analysis. Dry ashing with sodium carbonate as the flux has been found to be a simple and effective method for the destruction of the organic matrix. Samples of the dried paint of small
P C, Lai, K W, Fung
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