Herbicide Residues, Electron Affinity Residue Determination of CIPC, Monuron, Diuron, and Linuron by Direct Hydrolysis and Bromination

1964 ◽  
Vol 12 (1) ◽  
pp. 46-48 ◽  
Author(s):  
W. H. Gutenmann ◽  
D. J. Lisk
Keyword(s):  
Electron Affinity ◽  
Herbicide Residues ◽  
Residue Determination ◽  
Direct Hydrolysis

Electron Affinity Residue Determination of Nitrated MCP, MCPB, and NAA; Conversion of MCPB to MCP in Bean Plants

1964 ◽  
Vol 47 (2) ◽  
pp. 348-352
Author(s):  
Carl A Bache ◽  
Donald J Lisk ◽  
Michael A Loos
Keyword(s):  
Electron Affinity ◽  
Snap Bean ◽  
Residue Determination ◽  
Bean Plants ◽  
Nitro Derivatives

Abstract In developing a method for determining residues of MCP, MCPB, and NAA by electron affinity, it was found that because of their low response, the herbicides must first be nitrated to (presumably) the 5 and 6 nitro derivatives. The method was used to determine about 0.1 ppm of MCP, MCPB, and NAA as residues in timothy, peas, and apples, respectively, and also to detect the conversion of MCPB to MCP in snap bean plants.

scholarly journals Determination of some herbicide residues in sweet potato

2021 ◽  
Vol 7 (1) ◽  
pp. 1910159
Author(s):  
Yvonne A. Hormenoo ◽  
Jacob K. Agbenorhevi ◽  
Seth O. Ekyem ◽  
Kwasi O. Bonsu ◽  
Vincent Torve ◽  
...  
Keyword(s):  
Sweet Potato ◽  
Herbicide Residues

scholarly journals Dynamics of the Degradation of Acetyl-CoA Carboxylase Herbicides in Vegetables

Foods ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 405
Author(s):  
Miroslav Jursík ◽  
Kateřina Hamouzová ◽  
Jana Hajšlová
Keyword(s):  
Linear Models ◽  
Growing Season ◽  
Field Trials ◽  
Baby Food ◽  
Vegetable Production ◽  
The Czech Republic ◽  
Herbicide Residues ◽  
Harvest Intervals ◽  
Small Plot

(1) Background: Aryloxyphenoxy-propionates and cyclohexanediones are herbicides most widely used in dicot crops worldwide. The main objective of the study was to determine the dynamics of herbicide residues in carrot, lettuce, cauliflower, and onion in order to suggest a low level of residues in harvested vegetables. (2) Methods: Small plot field trials were carried out in four vegetables in the Czech Republic. The samples of vegetables were collected continuously during the growing season. Multiresidue methods for the determination of herbicide residues by LC-MS/MS were used. Non-linear models of degradation of individual herbicides in vegetables were calculated using the exponential decay formula. Action GAP pre-harvest intervals for the 25% and 50% maximum residue limit (MRL) and 10 µg kg−1 limit (baby food) were established for all tested herbicides. (3) Results: The degradation dynamics of fluazifop in carrot, onion, and cauliflower was significantly slower compared to quizalofop and haloxyfop. The highest amount (2796 µg kg−1) of fluazifop residues was detected in cauliflower 11 days after application. No residue of propaquizafop and cycloxydim was detected in any vegetable samples. (4) Conclusions: Aryloxyphenoxy-propionate herbicide (except propaquizafop) could contaminate vegetables easily, especially vegetables with a short growing season. Vegetables treated with fluazifop are not suitable for baby food. Lettuce and cauliflower treated by quizalofop are not suitable for baby food, but in onion and carrot, quizalofop could be used. Propaquizafop and cycloxydim are prospective herbicides for non-residual (baby food) vegetable production.

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