Evaluation of an Analytical Method Using GC-MS/MS and a 3-Layer Solid Phase Extraction Mini-Column for Pesticide Residues in Agricultural Products

2020 ◽  
Vol 61 (6) ◽  
pp. 239-246
Author(s):  
Yoshitsugu Okubo ◽  
Kengo Mukai
2018 ◽  
Vol 35 (3) ◽  
pp. 189
Author(s):  
Eudécio Bonfim dos Santos Dias ◽  
Eliane Da Costa Vilela ◽  
Fernando Mauro Lanças

Vegetable oil were introduced in human diet in the last decade to change the use of animal fats. The chemical products althrought utilized in correct manner can cause residues in food bring to healt there be a necessity of a constant monitoring of the concentration level the several agricultural products. The answer to this necessity has motivated the development of several of a methodology for simultaneous analysis of aldrin, dieldrin, endrin and endosulfanin vegetable oils by HRGC, using solid phase extraction (SPE) using silica and XAD-2. The recovery was 70-110%.


1996 ◽  
Vol 79 (5) ◽  
pp. 1209-1214 ◽  
Author(s):  
Frank J Schenck ◽  
Lori Calderon ◽  
Lynda V Podhorniak

Abstract A rapid, multiresidue solid-phase extraction (SPE) technique for determination of organochlorine pesticide and polychlorinated biphenyl (PCB) residues in nonfatty fish was modified for use with fatty fish. In the modified procedures, samples are extracted with acetonitrile, and the extract is cleaned up with both C18 and Florisil SPE columns. Residues are determined by gas chromatography with electron capture detection. The original method was modified for use with fatty fish by reducing the amount of tissue extracted and by using an improved Florisil SPE cleanup. Recovery data are presented for 24 fortified organochlorine pesticide residues (0.12 ppm) and 3 fortified PCB residues (0.80 ppm) from flounder, bluefish, and shad samples, which contained 0.8,5.4, and 22.6% fat, respectively. For the 3 types of fish, recoveries of 23 of 24 fortified organochlorine pesticide residues ranged from 55 to 129%, and recoveries of 3 fortified PCB residues ranged from 55 to 104%. There were no significant differences in recovery based on fish species and/or fat content for the majority of residues studied. This SPE method and the official AOAC method yielded comparable results for fish containing incurred organochlorine residues.


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