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د. رانيا حلمي باحث اول بقسم بحوث متبقيات المبيدات وتلوث البيئة .
خبرة في تحليل متبقيات المبيدات والملوثات في مختلف عناصر البيئة والمحاصيل الزراعية المحتلفة.
مراجع ومحكم للأبحاث العلمية في بعض المجلات الدولية.
تقدير متبقيات المبيدات في المحاصيل المختلفة وتقدير المخاطر الصحية الناتجة عنها .
تقدير فترات ما قبل الحصاد .
التخلص من متبقيات المبيدات في البيئة .
- 2018 دكتوراه - مبيدات - جامعة القاهرة - مصر
- 2004 ماجستير - وقاية نبات - مبيدات - جامعة قناة السويس - مصر
- 2023 - الحالي - باحث أول - قسم بحوث متبقيات المبيدات وتلوث البيئة
- 2018 - 2023 - باحث - قسم بحوث متبقيات المبيدات وتلوث البيئة
- 2014 - 2018 - باحث مساعد - قسم بحوث متبقيات المبيدات وتلوث البيئة
- 1997 - 2014 - مهندس زراعي - قسم بحوث متبقيات المبيدات وتلوث البيئة
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1-Al-kazafy Hassan Sabry, R. M. Helmy , Rasha A. Sleem , S. Abolmaaty, A. Mohamady (2025) . Impact of Two Nano-pesticide Formulations in Combating the Two-spotted Spider Mite, Tetranychus Urticae Koch, and Their Residues in Cucumber Fruits, Cucumis Sativus L . Scientific Reports
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2-A. Ismail, A. Ahmed, H. Eid, R. Saleh, R.M.A. Helmy , S.M. EL GANAINY, M. J. Hajjar, H. Mohamed (2024) . Exploring the Efficacy of Indigenous Trichoderma Asperellum and T. Harzianum for Biodegrading Thiamethoxam and Chlorantraniliprole Insecticides . Applied Ecology and Environmental Research
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3-M. Moustafa, Nourhan A. El-Said, N. A. Alfuhaid, Dalia E. El Hefny , R. M. Helmy , Adrien Fónagy, El-Desoky S. Ibrahim (2024) . Field Evaluation of the Bioactivity of Flonicamid and Flubendiamide and Their Mixtures with the Lemongrass, Cymbopogon Citratus, Essential Oil on Fall Armyworm (lepidoptera: Noctuidae) Infesting Sweet Corn and Dissipation of Chemicals in Seeds and Husks1 . Journal of entomological science
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4-R. Alrowais, Eldesoky Sabri Ibrahim, Dalia E. El-Hefny , R. M. Helmy , R. S. Yousef, S. A. Mottaleb, Mahmoud M. Abdel daiem, Wassef Ounaies, Bandar Alwushayh, Mohamed Mahmoud-Aly (2024) . Removal of Cyantraniliprole from Aquatic Environments by Chlamydomonas Reinhardtii . BioResources
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5-Reham M Abdelfatah, H. Soliman, R. M. Helmy (2024) . Depreciation, Risk Assessment Study of Pymetrozine, Pyriproxyfen, and Acetamiprid Residues Using Quechers and Hplc (dad) and Their Biochemical Effects on Eggplant Under Greenhouse Conditions . Journal of Plant Protection and Pathology
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6-Atef T. El Masry, Dalia E. El-Hefny , R. M. Helmy , Ahmed A.A. El-Ghanam (2024) . Effect of Some Insecticides, Depletion and Risk Assessment Against Whitefly Stages, Bemisia Tabaci (gennadius) on Cucumber Cultivation . Egyptian Journal of Chemistry
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7-Ahmed Elghnam, sherif Hussein, R. M. Helmy , Abdelbaset Elsaidy, Dalia E. El-hefny (2024) . Monitoring of Polychlorinated Biphenyls in Surface Water Using Quechers Extraction Method with Gas Chromatography-micro Electron Capture Detector . Egyptian Journal of Chemistry
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8-M. Moustafa, Dalia E. El Hefny , N. A. Alfuhaid, R. M. Helmy , Nourhan A. El-Said, El-Desoky S. Ibrahim (2024) . Effectiveness and Biochemical Impact of Flubendiamide and Flonicamid Insecticides Against Bemisia Tabaci (hemiptera: Aleyrodidae) and Residue Dissipation in Cherry Tomato Plants and Soil Under Greenhouse Conditions . Journal of entomological science
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9-Hassan Sabry, A. Mohamady, Rasha A. Sleem, S. Abolmaaty, R. M. Helmy (2023) . Role of Etofenprox Nanoformulation in Suppression of the Silver Whitefly, Bemisia Tabaci and Its Residue in Eggplant Fruits . Journal of Plant Protection Research
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10-R. Reda, Rania M. A. Helmy , A. Osman, Farag A Gh Ahmed, G. Kotb, A. H. A. El-fattah (2023) . The Potential Effect of Moringa Oleifera Ethanolic Leaf Extract Against Oxidative Stress, Immune Response Disruption Induced by Abamectin Exposure in Oreochromis Niloticus . Environmental science and pollution research international
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11-D. Barakat, El-Desoky S. Ibrahim, Rania M. A. Helmy (2023) . Quantification and Risk Assessment of Flutianil and of Propiconazole in Green Bean by Hplc-dad Under Greenhouse Conditions . Egyptian Journal of Chemistry
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12-F. Malhat , O. Abdallah, C. Anagnostopoulos, Mohamed Hussien, I. Purnama, Rania M. A. Helmy , H. Soliman, Dalia E. El-Hefny (2022) . Residue, Dissipation, and Dietary Intake Evaluation of Fenpyroximate Acaricide In/on Guava, Orange, and Eggplant Under Open Field Condition . Frontiers in Nutrition
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13-Rania M. A. Helmy , Hend A. Mahmoud, H. El-Gammal (2021) . Dynamic Dissipation Pattern and Pre-harvest Interval Prediction of Spirotetramat in Tomato and Onion Under Field Conditions . Pesticide Research Journal
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14-M. I. Ahmed, S. Ahmed, Rania M. A. Helmy , Fatemah Alzhraa M. W. A. Abd Elkareem (2021) . Determination of Pesticides Residues in Orange Samples Marketed in Assiut Governorate, Egypt .
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15-Rania M. A. Helmy , Dalia E. El-Hefny , Hany Hunter (2021) . Validation Using Quechers Method, Risk Assessment and Preharvest Intermission Using Gc-ms for Determination of Azoxystrobin in Tomato and Cucumber . Egyptian Journal of Chemistry
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16-Hend A. Mahmoud, Dalia E. El-Hefny , Rania M. A. Helmy (2019) . Environmental View for Chlorothalonil on Tomato and Pepper Fruits and Soil Field in Egypt: Risk Assessment and Pre-harvest Gap . International Journal of Environmental Analytical Chemistry
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17-Dalia E. El-Hefny , Ibrahim S. Abdallah, Rania M. A. Helmy , Hend A. Mahmoud (2019) . Dissipation of Methomyl Residues in Tomato Fruits, Soil and Water Using Lc-ms/ms . Journal of Plant Protection Research
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18-A. Soliman, Rania M. A. Helmy , I. Nasr, M. Abbas, Hend A. Mahmoud, Wayne Jiang (2017) . Behavior of Thiophanate Methyl and Propiconazole in Grape and Mango Fruits Under the Egyptian Field Conditions . Bulletin of Environmental Contamination and Toxicology