Dissipation behavior of thiophanate-methyl in strawberry under open field condition in Egypt and consumer risk assessment

Malhat, Farag; Abdallah, Osama I.; Ahmed, Faisal; Salam, Shokr Abdel; Anagnostopoulos, Chris; Ahmed, Mohamed Tawfic

doi:10.1007/s11356-020-10186-4

Cited by 18 publications

(6 citation statements)

References 37 publications

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“…Thiophanate methyl is a broad-spectrum benzimidazole fungicide usually applied in pre-and post-harvest, for the control of a wide range of fruit and vegetable pathogens [38]. Similar results were reported by Salem et al [39] who detected thiophanate methyl in soil samples from El-Beheira governorate, Egypt.…”

Section: Discussionsupporting

confidence: 83%

Determination of Pesticide Residues in Agricultural Soil Samples Collected from Sinai and Ismailia Governorates, Egypt

et al. 2021

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Soil contamination by pesticide residues is a major concern due to their high soil persistence and dangerous effect on humans. Therefore, the aim of this study was to detect and determine the concentration of pesticide residues in agricultural soil samples. Agricultural soil samples were collected from three Egyptian governorates and were extracted using the QuEChERS method and analyzed by gas chromatography-mass spectrometry. A total of twenty different pesticide residues (approximately 43% of the tested pesticides) were detected in agricultural soil samples obtained from the three governorates. South Sinai was heavily contaminated by pesticides, with a total concentration of 0.505 mg/kg, followed by Ismailia (0.207 mg/kg) and North Sinai (0.075 mg/kg). According to its use in agriculture, the percentage of pesticide residues detected revealed that 60% of the pesticides were fungicides and 35% were insecticides. In Ismailia governorate, carbendazim was detected in 40% of agricultural soil samples. In North Sinai governorate, boscalid and chlorpyrifos were detected in 66.66% of the soil samples. In South Sinai governorate, thiophanate-methyl, metalaxyl, and carbendazim were detected in 50% of the soil samples. This study revealed the presence of different pesticide residues in Egyptian agricultural soil samples, which can affect agricultural products grown on contaminated agricultural soil. The accumulation of mixtures of pesticide residues in soil constitutes mostly toxic chemicals that are a worldwide environmental issue that must be considered in the agricultural production sustainability assessment. These results could be used as a base for designing environmental maps to cover the pesticide residue contamination that affects agricultural crops in Egypt.

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Section: Discussionsupporting

confidence: 83%

Determination of Pesticide Residues in Agricultural Soil Samples Collected from Sinai and Ismailia Governorates, Egypt

et al. 2021

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“…ADI (mg/kg bw/day) and ARfD (mg/kg bw/day) values of insecticides were taken from IUPAC Pesticide Properties DataBase (PPDB, 2022). ARfD values of insecticides were used for short-term acute dietary risk assessments (Liu et al, 2016;Malhat et al, 2021). ESTI (mg/ kg bw/day) and acute HQ values were calculated with the use of the following equations.…”

Section: Methodology For Assessing Dietary Intake Of Insecticidesmentioning

confidence: 99%

“Bayramiç Beyazı” nektarinlerde insektisit kalıntılarının belirlenmesi ve tüketiciler için risk analizi

SERBES

Tiryaki

2023

TED

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In this study, insecticide residues on “Bayramiç Beyazı” nectarines were investigated with the use of QuEChERS method and LC-MS/MS analysis. Analytical method was verified through SANTE 11312/2021 Guidelines. The limit of quantification were below the MRLs for 12 insecticides. Method recovery was identified as 89.6%. Such a value was within the SANTE recovery (60-140%) limits. Nectarine samples were collected from Çanakkale open markets between 15 June-30 September, 2022 and analyzed at ÇOMÜ Agriculture Faculty-Pesticide Laboratory (Çanakkale-Türkiye). Abamectin, acetamiprid, deltamethrin, etoxazole, novaluron, pyriproxyfen, spirodiclofen, tetramethrin and thiacloprid residue levels were below the MRLs. On the other hand, dimethoate, imidacloprid and omethoate residues exceeded their MRLs only in one sample each. The maximum residues of acetamiprid, deltamethrin, etoxazole and novaluron were about 1/2, 1/5, 1/10, and 1/70 of the MRLs in one sample, respectively. Risk assessments revealed that exposure levels for adults were low (hazard quotient, HQ ≤ 1), with the exception of omehoate residues. Omethoate posed a chronic risk to human health through consumption of nectarines. For the remaining 11 insecticides, there was no risk for human health. However, the highest acute HQ were found for dimethoate even though its HQ was less than or equal to 1 The use of dimethoate is in the process of being banned in Türkiye, while omethoate (metabolite of dimethoate) is already banned. Presence of omethoate residue may be due to the degradation product of dimethoate.

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“…The dissipation of residues and risk assessments of thiophanatemethyl and carbendazim in some crops have been reported previously. 16,[25][26][27][28][29][30] For example, Wang et al 25 developed a modified QuEChERS-UPLC-MS/MS method to determine the concentrations of thiophanate-methyl and carbendazim in apple leaves and investigated the dissipation kinetics of these two analytes. The dissipation followed the first-order model with half-lives of 5.2-6.0 days in apple leaves.…”

Section: Introductionmentioning

confidence: 99%

“…The results showed that the fungicide dissipated fast, with respective halflives of 2.49 and 2.64 days in grape and mango, and the recommended pre-harvest intervals (PHIs) for thiophanate-methyl were 15 days for both fruits. El-Hefny et al 28 and Malhat et al 29 studied the dissipation behavior of thiophanate-methyl in strawberry under field conditions. The data illustrated that the half-lives of thiophanate-methyl were 1.26-3.15 days, the proposed PHIs were 4-11 days and the application thiophanate-methyl in strawberry was unlikely to present a public health concern.…”

Section: Introductionmentioning

confidence: 99%

Determination, dissipation dynamics, terminal residues and dietary risk assessment of thiophanate‐methyl and its metabolite carbendazim in cowpeas collected from different locations in China under field conditions

et al. 2021

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BACKGROUND: Thiophanate-methyl and its metabolite carbendazim are broad-spectrum fungicides used on many crops. The residues of these chemicals could result in potential environmental and human health problems. Therefore, investigations of the dissipation and residue behaviors of thiophanate-methyl and its metabolite carbendazim on cowpeas and associated dietary risk assessments are essential for the safety of agricultural products. RESULTS: A simple analytical approach using liquid chromatography with tandem mass spectrometry was developed and validated for the determination of thiophanate-methyl and carbendazim concentrations in cowpeas. Good linearity (R 2 > 0.998) was obtained, and the recoveries and relative standard deviations were 80.0-104.7% and 1.4-5.2%, respectively. The dissipation rates of thiophanatemethyl, carbendazim and total carbendazim were high (half-lives of 1.61-2.46 days) and varied in the field cowpea samples because of the different weather conditions and planting patterns. Based on the definition of thiophanate-methyl, the terminal residues of total carbendazim in cowpea samples were below the maximum residue limits set by Japan for other legumes. The acute and chronic risk quotients of three analytes were 0.0-27.6% in cowpea samples gathered from all terminal residue treatments, which were below 100%.CONCLUSION: An optimized approach for detecting thiophanate-methyl and carbendazim in cowpeas was applied for the investigation of field-trial samples. The potential acute and chronic dietary risks of thiophanate-methyl, carbendazim and total carbendazim to the health of Chinese consumers were low. These results could guide the safe and proper use of thiophanatemethyl in cowpeas and offer data for the dietary risk assessment of thiophanate-methyl in cowpeas.

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Dissipation behavior of thiophanate-methyl in strawberry under open field condition in Egypt and consumer risk assessment

Cited by 18 publications

References 37 publications

Determination of Pesticide Residues in Agricultural Soil Samples Collected from Sinai and Ismailia Governorates, Egypt

Determination of Pesticide Residues in Agricultural Soil Samples Collected from Sinai and Ismailia Governorates, Egypt

“Bayramiç Beyazı” nektarinlerde insektisit kalıntılarının belirlenmesi ve tüketiciler için risk analizi

Determination, dissipation dynamics, terminal residues and dietary risk assessment of thiophanate‐methyl and its metabolite carbendazim in cowpeas collected from different locations in China under field conditions

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