Simultaneous differential pulse-polarographic determination of CS2 and COS gases and its application in the analysis of dithiocarbamate fungicide residues in foods

1995 ◽  
Vol 351 (2-3) ◽  
pp. 297-300 ◽  
Author(s):  
Wolfgang Schwack ◽  
Bernd Br�ger ◽  
Steven Nyanzi
Keyword(s):  
Differential Pulse ◽  
Polarographic Determination ◽  
Fungicide Residues

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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