Determination of organophosphorus and synthetic pyrethroid pesticide residues and their variability in large size fruit crops

2021 ◽  
Author(s):  
Mohammad Dalower Hossain Prodhan ◽  
Marina Afroze ◽  
Afroza Begum ◽  
Debasish Sarker
Keyword(s):  
Pesticide Residues ◽  
Synthetic Pyrethroid ◽  
Fruit Crops ◽  
Large Size ◽  
Pyrethroid Pesticide

scholarly journals Determination of Organochlorine and Synthetic Pyrethroid Pesticide Residues in Water Samples Collected from Different Locations of Bangladesh

2021 ◽  
Vol 12 (02) ◽  
pp. 11-21
Author(s):  
Mohammad Dalower Hossain Prodhan ◽  
Md. Sultan Ahmed ◽  
Nirmal Kumar Dutta ◽  
Debasish Sarker ◽  
Syed Nurul Alam
Keyword(s):  
Water Samples ◽  
Pesticide Residues ◽  
Synthetic Pyrethroid ◽  
Pyrethroid Pesticide

Determination of pyrethroid pesticide residues in fatty materials by solid-matrix dispersion partition, followed by mini-column size-exclusion chromatography

1999 ◽  
Vol 833 (1) ◽  
pp. 19-34 ◽  
Author(s):  
Alfonso Di Muccio ◽  
Patrizia Pelosi ◽  
Danilo Attard Barbini ◽  
Tiziana Generali ◽  
Silvana Girolimetti ◽  
...  
Keyword(s):  
Size Exclusion Chromatography ◽  
Pesticide Residues ◽  
Size Exclusion ◽  
Solid Matrix ◽  
Pyrethroid Pesticide ◽  
Exclusion Chromatography

scholarly journals Determination of Levels of Organochlorine, Organophosphorus, and Pyrethroid Pesticide Residues in Vegetables from Markets in Dar es Salaam by GC-MS

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
John A. M. Mahugija ◽  
Farhat A. Khamis ◽  
Esther H. J. Lugwisha
Keyword(s):  
Public Health ◽  
Mass Spectrometry ◽  
Pesticide Residues ◽  
Dar Es Salaam ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrethroid Pesticide ◽  
Maximum Residue Limits ◽  
Samples And Sampling ◽  
Dar Es Salaam City

This study investigated the levels of pesticides and metabolites in vegetables from major markets in Dar es Salaam city, Tanzania. Samples of fresh cabbage, spinach, and onions from the markets were analysed for pesticide residues. Extraction was performed using acetone followed by dichloromethane : cyclohexane mixture and the extracts were cleaned up using Florisil. The compounds were determined by gas chromatography-mass spectrometry (GC-MS). Pesticides and metabolites were detected in 72.2% of the samples. The detected pesticide residues and their highest mean concentrations were p,p′-DDT 4.00 × 10−3 mg/kg, p,p′-DDD 6.40 × 10−1 mg/kg, o,p′-DDD 1.00 × 10−2 mg/kg, α-endosulfan 6.00 × 10−1 mg/kg, β-endosulfan 2.10 × 10−1 mg/kg, chlorpyrifos 3.00 mg/kg, and cypermethrin 4.00 × 10−2 mg/kg. The most frequently detected compounds were p,p′-DDD and chlorpyrifos. The order of contamination was spinach > cabbage > onions. Generally, there were no significant variations in concentrations of pesticide residues among samples and sampling sites, which indicated similarities in contamination patterns. The concentrations of contaminants were above the maximum residue limits (MRLs) in 33.3–50% of the samples. The findings indicated risks and concerns for public health.

​Evaluation of Level of Pesticide Residue in Seminal Fluid of Crossbred Bulls

2021 ◽  
Author(s):  
Paramveer Singh Sangha ◽  
Ajeet Kumar ◽  
Mrigank Honparkhe ◽  
Jasbir Singh Bedi ◽  
Ashwani Kumar ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Pesticide Residue ◽  
Seminal Plasma ◽  
Pesticide Residues ◽  
Seminal Fluid ◽  
Reproductive Organs ◽  
Synthetic Pyrethroid ◽  
Pyrethroid Pesticide ◽  
Fresh Semen ◽  
Livestock Development

Background: Pesticides act as endocrine disruptors and cause enormous disturbances in steroidogenesis, spermatogenesis and sexual behavioural display. These toxicants modulate and/or disrupt the reproductive and hormonal environment by acting on hypothalamus, pituitary and reproductive organs. Few studies have been carried out to assess the levels of pesticides in dairy cattle / buffaloes. The information on pesticide residues in body fluids especially blood and semen in breeding bulls is lacking. Method: In the light of above background nineteen fresh semen ejaculates were collected from Milkfed, Khanna and PLDB (Punjab Livestock Development Board), Nabha, Punjab and stored at -80◦C. Immediately after collection, the semen was centrifuged at 4500 × g for 20 min at 4◦C. The supernatant (seminal plasma) was stored at -20◦C until processing for the assessment of pesticide residues using gas chromatography (GC). In the present study on crossbred breeding bulls, the semen samples were analyzed for organochlorines, organophosphates and synthetic pyrethroid pesticide residues. Seven OCP were screened namely Heptachlor epoxide, Chlordane, Fipronil, Lindane, Methoxychlor, op-DDT, Endrin. Eleven OPP were screened namely Chorpyrifos, Dichlorovos, Ethion, Monocrotophos, Malathion, Parathion-methyl, Profenphos, Phorate, Triazophos, Quinalphos and Phosalone and four SP’s namely Cypermethrin, Permethrin, Deltamethrin, Cyalothrin were screened in the semen samples. Semen samples were also assessed for viability, HOST (%) and abnormality (%) for both fresh as well as post thaw samples. Result: None of the semen samples were found positive for any of the above pesticide residues. This may be attributed to the feeding of fodder cultivated at the stations without using any pesticides, hence no pesticide residue found in the semen samples of the crossbred breeding bulls of these semen stations In present study, viability (%) of sperms were found to be significantly higher (p less than 0.05) in fresh (75.57 ± 5.31) as compared to post thaw (70.17 ± 4.64) semen of bulls. The abnormality (%) of sperms was found to be significantly lower (p less than 0.05) in fresh (13.61 ± 3.71) than post thaw (18.22 ± 3.59) semen bulls. Also in present study the host (%) was found 67.23±4.76 in fresh semen which decreased to 46.82±3.55 in post thaw semen.

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