scholarly journals Enhanced sensitivity for the differential pulse polarographic determination of Mo(VI) based on adsorption catalytic current

1995 ◽  
Vol 352 (6) ◽  
pp. 598-599
Author(s):  
Bharathibai J. Basu ◽  
D. K. Padma ◽  
S. R. Rajagopalan
Keyword(s):  
Differential Pulse ◽  
Polarographic Determination ◽  
Catalytic Current ◽  
Enhanced Sensitivity

Fast scan differential pulse polarographic determination of cyanide

1982 ◽  
Vol 47 (8) ◽  
pp. 2214-2218 ◽  
Author(s):  
Věra Stará ◽  
Miloslav Kopanica
Keyword(s):  
Detection Limit ◽  
Differential Pulse ◽  
Polarographic Determination ◽  
Mean Deviation ◽  
Anodic Current ◽  
Catalytic Current ◽  
Fast Pulse

The measurement of the catalytic current, caused by the interaction between cyanide and nickel(II)-ethanolamine complex enables the determination with the detection limit 0.4 μg l-1 with the relative mean deviation 0.90%. Direct fast pulse polarographic determination, based on the measurement of the anodic current has the limit 40 μg l-1 and the relative mean deviation 0.93%.

Determination of platinum in biological material by differential pulse polarography: Analysis in urine, plasma and tissue following sample combustion

1983 ◽  
Vol 48 (10) ◽  
pp. 2903-2908 ◽  
Author(s):  
Viktor Vrabec ◽  
Oldřich Vrána ◽  
Vladimír Kleinwächter
Keyword(s):  
Biological Material ◽  
Biological Fluid ◽  
Mercury Electrode ◽  
Differential Pulse ◽  
Differential Pulse Polarography ◽  
Linear Calibration ◽  
Catalytic Current ◽  
Pulse Polarography ◽  
Dropping Mercury Electrode

A method is described for determining total platinum content in urine, blood plasma and tissues of patients or experimental animals receiving cis-dichlorodiamineplatinum(II). The method is based on drying and combustion of the biological material in a muffle furnace. The product of the combustion is dissolved successively in aqua regia, hydrochloric acid and ethylenediamine. The resulting platinum-ethylenediamine complex yields a catalytic current at a dropping mercury electrode allowing to determine platinum by differential pulse polarography. Platinum levels of c. 50-1 000 ng per ml of the biological fluid or per 0.5 g of a tissue can readily be analyzed with a linear calibration.

DIFFERENTIAL PULSE POLAROGRAPHIC DETERMINATION OF FORMALDEHYDE IN STORED NOXYTHIOLIN SOLUTIONS

1985 ◽  
Vol 10 (2) ◽  
pp. 177-183
Author(s):  
A. D. Woolfson ◽  
D. F. McCafferty ◽  
S. P. Gorman ◽  
Lesley Anderson
Keyword(s):  
Differential Pulse ◽  
Polarographic Determination

scholarly journals DIFFERENTIAL PULSE POLAROGRAPHIC DETERMINATION OF ARSENIC IN BITUMINOUS COAL

1998 ◽  
Vol 6 (7) ◽  
pp. 27-32
Author(s):  
M. Nogami Eurica ◽  
M. Dalmeida Gracinda ◽  
Jorge Nozaki
Keyword(s):  
Coal Sample ◽  
Bituminous Coal ◽  
Supporting Electrolyte ◽  
Arsenic Concentration ◽  
Differential Pulse ◽  
Polarographic Determination ◽  
Differential Pulse Polarography ◽  
Acidic Media ◽  
Pulse Polarography

Differential pulse polarography was employed for the determination of arsenic in bituminous coal from Figueiras, Parana, Brazil. The dried coal sample was crushed to -100 mesh, ashed, and treated with reducing reagents in acidic media. The arsine generated was collected and selectively oxidized to Al +3 using an absorbing solution of 0.1 mol.L -1 [tris(hydroxymethyl) aminomethane] ( TRIS) and 0. 002 mol.L -1 silver nitrate. A solution of TRIS and hydrochloric acid, pH -1, was used as supporting electrolyte for differential pulse polarographic determination of Al+3 in the concentration range 0.05 -0.60 μglmL. The average arsenic concentration found was 69.0 ± 2.6 mg.kg -1 and was in agreement with the spectrophotometric method using silver-diethyldithiocarbamate-pyridine.

Differential pulse polarographic determination of dicrotophos, crotoxyphos and chlorfenvinphos in grains and soils

Talanta ◽  
1997 ◽  
Vol 44 (10) ◽  
pp. 1859-1863 ◽  
Author(s):  
N SREEDHAR ◽  
P RAJENDRAKUMARREDDY ◽  
G SUBBAREDDY ◽  
S REDDY
Keyword(s):  
Differential Pulse ◽  
Polarographic Determination
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