scholarly journals DETERMINAÇÃO DE RESÍDUOS DE AGROTÓXICOS ORGANOCLORADOS EM HORTALIÇAS

2002 ◽  
Vol 12 ◽  
Author(s):  
MARIA TERESA PLATA OVIEDO ◽  
MARIA CECÍLIA DE FIGUEIREDO TOLEDO ◽  
EDUARDO VICENTE
Keyword(s):  
Gas Chromatography ◽  
Pesticide Residues ◽  
Detection Limits ◽  
Heptachlor Epoxide ◽  
Endosulfan Sulfate ◽  
Average Recovery ◽  
Pesticides Residues ◽  
Organochlorine Pesticide Residues ◽  
The University

Foram analisados resíduos de Clorotalonil, Aldrin, Dieldrin, Heptacloro, Heptacloro epóxido, Endosulfan alfa, Endosulfan beta e Sulfato de Endosulfan nas seguintes hortaliças: alface, acelga, chicória, repolho, tomate, chuchu, batata, cenoura, mandioca e mandioquinha. As amostras foram coletadas no restaurante da Universidade Estadual de Campinas, no período de abril/1998 a abril/ 2001 e nas Centrais de Abastecimento de Campinas, no período de abril a agosto/2001. Os resíduos dos agrotóxicos organoclorados foram determinados por cromatografia a gás com detector de captura de elétrons (CG-DCE- 63Ni). Os limites de detecção (LD) encontrados para Clorotalonil, Aldrin, Dieldrin, Heptacloro, Heptacloro epóxido, Endosulfan alfa, Endosulfan beta e Sulfato de Endosulfan foram 0,0006, 0,0006, 0,0008, 0,0006, 0,0007, 0,0008, 0,0009 e 0,0016 mg/kg, e os limites de quantificação 0,002, 0,002, 0,003, 0,002, 0,003, 0,003, 0,003 e 0,005 mg/kg, respectivamente. A recuperação média dos agrotóxicos analisados variou de 76,0 a 97,0% em repolho, de 90,0 a 103,0% em tomate e de 81,0 a 106,0% em batata. Em todas as amostras de hortaliças analisadas (n=151), os níveis residuais de agrotóxicos apresentaram-se abaixo dos limites de detecção (LD) do método validado. DETERMINATION OF ORGANOCHLORINE PESTICIDES RESIDUES ON VEGETABLES Abstract Residues of Chlorotalonil, Aldrin, Dieldrin, Heptachlor, Heptachlor epoxide, alpha and beta Endosulfan and Endosulfan sulfate were analysed in the following vegetables: lettuce, swiss chad, chicory, cabbage, tomato, chayote, potato, carrot, cassava and cassava specy. The samples were collected at the restaurant of the University of Campinas, from April/1998 to April/2001 at the “Centrais de Abastecimento de Campinas (CEASA)”, from April to August/2001. The organochlorine pesticide residues were determined by gas chromatography with an electron capture detector (ECD-63Ni). The detection limits of Chlorotalonil, Aldrin, Dieldrin, Heptachlor, Heptachlor epoxide, alpha and beta Endosulfan and Endosulfan sulfate were 0.0006, 0.0006, 0.0008, 0.0006, 0.0007, 0.0008, 0.0009 and 0.0016 mg/kg respectively, and their quantification limits were 0.002, 0.002, 0.003, 0.002, 0.003, 0.003, 0.003 and 0.005 mg/kg. The average recovery of the pesticides varied between 76.0 and 97.0% for cabbage, 90,0 to 103.0% for tomato and 81.0 to 106.0% for potato. The samples analysed (n=151) showed pesticide levels below the detection limits of the validated method.

scholarly journals Occurrence of Organochlorine Pesticide (OCP) Residues in Chicken Skin, Liver and Muscle in Egypt

2019 ◽  
Vol 16 (3) ◽  
pp. 659-667
Author(s):  
Tamer M. Abd El-Aziz El-Mergawy ◽  
Wafai Z. A. Mikhail ◽  
Islam Noeman Nasr ◽  
Waiel M. Salah El Dien
Keyword(s):  
Gas Chromatography ◽  
Organochlorine Pesticide ◽  
Electron Capture ◽  
Pesticide Residues ◽  
Egg Production ◽  
Heptachlor Epoxide ◽  
Tissue Type ◽  
Chicken Skin ◽  
Organochlorine Pesticide Residues

This study was conducted for determination of organochlorine (OCPs) pesticide residues in muscle, skin and liver of chickens (laying hens). The examined samples were collected from three laying hen farms (white Hy- Line breed) in El- Dakahlia, El-Sharkia and El-Giza Governorates, Egypt. Five samples of each tissue were collected at 3 stages; start, peak and end, of egg production from the three farms with the total of 45 samples for each tissue type. The examined samples were extracted and prepared to organochlorine pesticide detection by gas Chromatography system equipped with electron capture detector (ECD). Exactly 14 of organochlorine pesticide residues were analyzed. The obtained results revealed that the Methoxychlor, PP-DDE, Dieldrin, Aldrin, Heptachlor epoxide and α-BHC residues were not detected in all the examined samples. Meanwhile, PP-DDT, PP-DDD, Endrin, Endosulfan, Heptachlor, Δ-BHC, ɤ-BHC (lindane) and ɤ-chlordane were detected in the examined samples in different concentrations. No considerable difference in organochlorine residues could be noticed either between the different Governorates or between the different stages of egg production. The results exhibited relatively higher levels of these residues in skin and liver samples comparing with those in the muscle samples.

Determination of multiple organochlorine pesticide residues in shrimp using modified QuEChERS extraction and gas chromatography

2018 ◽  
Vol 16 (1) ◽  
pp. 81-93
Author(s):  
MDH Prodhan ◽  
SN Alam
Keyword(s):  
Gas Chromatography ◽  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Limit Of Detection ◽  
Residue Analysis ◽  
Limit Of Quantification ◽  
Modified Quechers ◽  
Endosulfan Sulphate ◽  
Organochlorine Pesticide Residues

Determination of organochlorine pesticide residues in shrimp is very important to ensure the consumer’s safety and to fulfill the importer’s demand. Therefore, a simple and efficient multiple organochlorine pesticide residues analytical method using quick, easy, cheap, effective, rugged and safe (QuEChERS) extraction technique and Gas Chromatography coupled with Electron Capture Detector (ECD) has been developed and validated for the determination of 19 organochlorine pesticides (α- BHC, δ- BHC, β- BHC, γ- BHC, Heptachlor, Aldrin, Heptachlor Epoxide, γ- Chlordane, α- Chlordane, α- Endosulfan, 4,4 DDE, Dieldrin, Endrin, 4,4 DDD, β- Endosulfan, 4,4 DDT, Endosulfan sulphate, Methoxychlor, and Endrin Ketone) in shrimp. The method was validated by evaluating the accuracy, precision, linearity, limit of detection (LOD) and limit of quantification (LOQ). The average recoveries of the selected pesticides ranged from 84% to 106% with RSDr ≤ 14% in four fortification levels of 0.05, 0.1, 0.2 and 0.3 mg kg-1. The linearity was ≥ 0.996 for all of the selected pesticides with matrix matched calibration standards. The LOD ranged from 0.003 to 0.009 mg kg-1 and the LOQ was 0.05 mg kg-1. This method was applied successfully for the residue analysis of 40 shrimp samples collected from different regions in Bangladesh.SAARC J. Agri., 16(1): 81-93 (2018)

scholarly journals DETERMINATION OF ORGANOCHLORINE PESTICIDE RESIDUES IN HUMAN MILK IN PIRACICABA, SP

2017 ◽  
Vol 36 (4) ◽  
pp. 21
Author(s):  
Rosana M.O. Freguglia ◽  
Graziela C. R. Moura Andrade ◽  
Valdemar Luiz Tornisielo
Keyword(s):  
Gas Chromatography ◽  
Human Milk ◽  
Organochlorine Pesticides ◽  
Solid Phase ◽  
Phase Extraction ◽  
Endosulfan Sulfate ◽  
Milk Samples ◽  
Organochlorine Pesticide Residues ◽  
Potential Impact

Worldwide, there is great concern with the issue of bioaccumulation of organochlorine compounds in human milk and their potential impact on health. Breastfeeding is recognized as essential for the proper development and protection of children’s health. In this study, we collected human milk samples from 40 donors in Piracicaba - SP, and analyzed to determine the levels of residues of organochlorine pesticides: hexachlorobenzene (HCB), lindane, heptachlor, aldrin, heptachlor epoxide, o,p’ DDE, a- endosulfan, p,p’ DDE, dieldrin, endrin, b-endosulfan, endosulfan sulfate, and methoxychlor. The analysis was performed by solid phase extraction (SPE) and quantification by gas chromatography using electron capture detector (ECD). Residues of organochlorine pesticides were detected in 65% of the donors evaluated.

scholarly journals Determination of Organochlorine Pesticide Residues in Medicinal Plants Sold in Coimbra, Portugal

1999 ◽  
Vol 82 (5) ◽  
pp. 1206-1213 ◽  
Author(s):  
Celeste Lino M ◽  
Lúcia M C Guarda ◽  
Silveira M Irene N
Keyword(s):  
Medicinal Plants ◽  
Organochlorine Pesticide ◽  
Pesticide Residues ◽  
Endosulfan Sulfate ◽  
National Brands ◽  
Detection Frequency ◽  
Organochlorine Pesticide Residues ◽  
Maximum Residue Levels ◽  
Foreign Brands

Abstract Levels of 14 organochlorine pesticide residues—1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane (DDT) group (p,p'-DDT, p,p'-DDT, p,&-DDD, and p,&-DDE), HCH isomers (α-, ß-, and γ-HCH), hexachlorobenzene (HCB), aldrin, dieldrin, endrin, heptachlor, α-endosulfan, and endosulfan sulfate—were evaluated in 127 samples of medicinal plants collected in pharmacies (78 samples) and herb stores (49 samples) in 1996. Samples were divided between 15 national brands and 7 foreign brands. Most samples sold in pharmacies contained residues of γ-HCH (51.3%). All residues were detected in analyzed samples, with exception of endrin in herb store samples. Detection frequency varied between 51.3% for γ-HCH and 1.3% for endrin in pharmacy samples, and between 34.7% for HCB and 4.1 % for endosulfan sulfate in herb store samples. Maximum residue levels were exceeded in 38 (48.7%) pharmacy samples and in 26 (53.1 %) medicinal herb store samples.

Sign in / Sign up

Export Citation Format

Share Document