Fungicide Residues, Determination of Dyrene in Apples by Application of the Zincke Reaction

1959 ◽  
Vol 7 (8) ◽  
pp. 560-561 ◽  
Author(s):  
D. L. Barry ◽  
D. J. Lisk
1967 ◽  
Vol 50 (5) ◽  
pp. 1102-1108
Author(s):  
Charles F Gordon ◽  
Richard J Schuckert ◽  
William E Bornak

Abstract A modified method for the determination of dithiocarbamate fungicide residues on crops is presented. A large representative subsample of the frozen crop is blended in ice-cold deaerated water and an aliquot of the homogenate is added to the analytical apparatus containing hot 5 0% sulfuric acid. Dithiocarbamates are decomposed to evolve CS2 which is removed by a continuous gentle air-sweep from the digestion flask. Variations in technique allow the analysis of dithiocarbamate fungicide residues in several ranges, 1-10, 10-200, and 200-1000 /ig maneb. Recoveries from a wide variety of crops averaged 70 to 103%. Certain crop types present low recoveries and/or high apparent control values, but modifications in the analytical procedure are successful in solving these problems.


The Analyst ◽  
1980 ◽  
Vol 105 (1248) ◽  
pp. 282 ◽  
Author(s):  
P. G. Baker ◽  
D. S. Farrington ◽  
R. A. Hoodless

2021 ◽  
pp. 345-348
Author(s):  
V. Božić ◽  
S. Vuković ◽  
S. Lazić ◽  
D. Šunjka ◽  
A. Žunić

1958 ◽  
Vol 6 (10) ◽  
pp. 747-750 ◽  
Author(s):  
H. J. Ackermann ◽  
H. A. Baltrush ◽  
H. H. Berges ◽  
D. O. Brookover ◽  
B. B. Brown

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