scholarly journals Monitoring Pesticide Residues in Egyptian Fruits and Vegetables in 1995

1999 ◽  
Vol 82 (4) ◽  
pp. 948-955 ◽  
Author(s):  
Salwa M Dogheim ◽  
Sohair A Gad Alla ◽  
Ashraf M El-Marsafy ◽  
Safaa M Fahmy
Keyword(s):  
Organochlorine Pesticide ◽  
Pest Control ◽  
Pesticide Residues ◽  
Fruits And Vegetables ◽  
Synthetic Pyrethroids ◽  
Fruit And Vegetable ◽  
Vegetable Samples ◽  
Codex Committee ◽  
Maximum Residue Limits ◽  
Organochlorine Pesticide Residues

Abstract Organophosphorus, dithiocarbamates, and some synthetic pyrethroids pesticides, which are commonly used in Egypt for pest control, were monitored, as well as persistent organochlorines, which had been prohibited from use several years ago. Fruit and vegetable samples (397) were collected from 8 local markets and examined for 52 pesticides. Of all analyzed samples, 42.8% contained detectable residues, of which 1.76% exceeded their maximum residue limits (MRLs). The rates of contamination with the different pesticides were 0-86%. However, violation rates among contaminated products were very low, ranging from 0 to 4.6%. In general, organochlorine pesticide residues were not detected in most samples. Dithiocarbamate residues were found in 70.4% of 98 samples analyzed for dithiocarbamates, but only one grape sample had residues exceeding the MRL established by the Codex Committee on Pesticide Residues.

scholarly journals Monitoring of Pesticide Residues in Egyptian Fruits and Vegetables During 1996

2001 ◽  
Vol 84 (2) ◽  
pp. 519-531 ◽  
Author(s):  
Salwa M Dogheim ◽  
Sohair A Gad Alla ◽  
Ashraf M El-Marsafy
Keyword(s):  
Organochlorine Pesticides ◽  
Pesticide Residues ◽  
Fruits And Vegetables ◽  
Synthetic Pyrethroids ◽  
Fruit And Vegetable ◽  
Local Markets ◽  
Vegetable Samples ◽  
Maximum Residue Limits

Abstract Samples of the most common fruits and vegetables were collected from 8 local markets in 6 governorates. These 1579 samples were analyzed for residues of 53 pesticides, which included organophosphorus and organonitrogen compounds and some synthetic pyrethroids. Samples were also analyzed for residues of organochlorine pesticides, although they had been prohibited from use several years ago. Only 510 of the 1579 samples were analyzed for dithiocarbamate pesticide residues, which were determined as CS2. Overall, 76.1% of the total analyzed samples had no detectable residues, 23.9% contained detectable residues, and 2.59% contained residues that exceeded maximum residue limits. For individual crops, contaminated samples ranged from 0 to 96% of the number of samples analyzed. However, the highest violative percentage for samples of individual crops was 12.5. Chlorpyrifos, carbaryl, dimethoate, bromopropylate, and profenofos were the violative pesticides determined in fruit and vegetable samples. The results of the current study demonstrated that no restricted or banned pesticides such as DDT, HCH, and their isomers were found in any of the samples analyzed. Dithiocarbamate residues were detected in 9.4% of the 510 samples analyzed, with a violative percentage of 0.39, representing one grape sample and one peach sample.

scholarly journals Modification of AOAC Multiresidue Method for Determining Synthetic Pyrethroid Residues in Fruits, Vegetables, and Grains. Part III: Studies of Analyte Stability and Method Ruggedness

1997 ◽  
Vol 80 (1) ◽  
pp. 63-73 ◽  
Author(s):  
Guo-Fang Pang ◽  
Yan-Zhong Cao ◽  
Chun-Lin Fan ◽  
Jin-Jie Zhang ◽  
Xue-Min Li
Keyword(s):  
Fruits And Vegetables ◽  
Synthetic Pyrethroids ◽  
Good Precision ◽  
Fruit And Vegetable ◽  
Multiresidue Analysis ◽  
Method Performance ◽  
Pyrethroid Insecticides ◽  
Vegetable Samples ◽  
Agriculture Products ◽  
The Stability

Abstract The stability of 8 synthetic pyrethroids in 9 crops during storage for 90 days were studied. The 8 pyrethroid insecticides were highly persistent in the 6 grains during storage. But their stabilities in 3 kinds of fruits and vegetables were different from those in the 6 grains: Most of them were degraded. Florisil purification conditions were studied with 6 batches of Florisil from 3 countries at various extents of deactivation and amounts. The best conditions of Florisil purification found in this present research agree with those found 1 year ago. The efficiencies of acetonitrile and acetone to extract the 8 pyrethroids from 6 fruit and vegetable samples were compared. The extraction efficiency of acetone was competitive with that of acetonitrile for the 6 fruit and vegetable samples. Method performance was evaluated by 6 analysts from different areas. The ruggedness tests demonstrate further that the proposed method is simple, accurate with good precision, and suitable for multiresidue analysis of pyrethroids in various agriculture products.

scholarly journals DETERMINATION OF ORGANOCHLORINE PESTICIDE RESIDUES IN SOME VEGETABLES AND FRUIT BY QuEChERS TECHNIQUES AND GAS CHROMATOGRAPHY /MASS SPECTROMETRY

2020 ◽  
Vol 4 (2) ◽  
pp. 365-370
Author(s):  
F. Suleiman ◽  
A. A. Nuhu ◽  
K. I. Omoniyi ◽  
Z. I. Yashim
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Fruits And Vegetables ◽  
Heptachlor Epoxide ◽  
Gas Chromatography Mass Spectrometry ◽  
Sample Collection ◽  
Chromatography Mass Spectrometry ◽  
Organochlorine Pesticide Residues

The concentrations of organochlorine pesticide residues were analysed in some vegetables and fruit (spinach, lettuce, cabbage, tomatoes, carrots and onions)  grown at Dagachi farming areas along River Galma of Zaria in Kaduna State, Nigeria. Sample collection and preparation were carried out using standard procedures. The concentrations of all the pesticides in the fruits and vegetables samples were analysed using quick easy cheap effective rugged and safe (QuEChERS) multi- residue extraction and clean up techniques, followed by gas chromatography – mass spectrometry (GC – MS). The most commonly detected organochlorine pesticide residues in the entire samples analysed are lindane, delta – BHC, heptachlor epoxide (B), endosulfan I, dieldrin, and endosulfan II. Furthermore, the results of the study shows that the mean concentration of these organochlorines pesticide detected were higher in onion and spinach with heptachlor epoxide (B) having concentrations 2.303 mg/kg and 2.011 mg/kg respectively. Likewise, endosulfan II (1.433 mg/kg) in lettuce was observed. Heptachlor epoxide (B) detected were also very high in other samples such as carrot, cabbage, and tomatoes and with values 0.600 mg/kg, 0.716 mg/kg, and 0.524 mg/kg respectively. Indeed, these concentrations of all the organochlorine pesticides detected in the fruit and vegetables samples analysed were observed to be at alarming levels, much higher than the maximum residue limits (MRLs) by the Codex 2009 (WHO and FAO) except for lindane with values 0.007 mg/kg and 0.01 mg/kg in carrot and onions respectively 

Occurrence of organochlorine pesticide residues in eggs, chicken and meat in Jordan

Chemosphere ◽  
2010 ◽  
Vol 78 (6) ◽  
pp. 667-671 ◽  
Author(s):  
Rafat Ahmad ◽  
Nida’ M. Salem ◽  
Hussein Estaitieh
Keyword(s):  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Organochlorine Pesticide Residues

scholarly journals Organochlorine Pesticide Residues in Chicken Fat: A Survey

1986 ◽  
Vol 65 (6) ◽  
pp. 1084-1089 ◽  
Author(s):  
J.M. KAHUNYO ◽  
C.K. MAITAI ◽  
A. FRØSLIE
Keyword(s):  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Chicken Fat ◽  
Organochlorine Pesticide Residues
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