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Determination of residues of certain pesticides in fruits of tomatoes collected from central vegetable market in Darr´aa City

تقدير بقايا بعض المبيدات في ثمار البندورة المأخوذة من سوق الخضار المركزي في مدينة درعا

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 Publication date 2013
and research's language is العربية
 Created by Shamra Editor




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In this research, 66 samples of tomatoes were collected from vegetables central market in Darr´aa city during the period extended between 20 October/2009 - 4 October/2010) to investigate the presence of 26 pesticide residues which belong to different chemical classes using Gas Chromatography instruments equipped with μECD, FPD, MSD detectors. QuEChERS extraction method was used for residue extraction from tomato samples. The detectors linearity and pesticide detection limits were determined for every pesticide studied, and the recovery for all pesticides ranged from 90.6 for fenvalerate to 105.5% for propargite. Results showed that 56.1% of tomato samples contained detectable residues and Chlorpyrifos and cypermethrin were the most detected pesticides, while amounts of propargite, methamidofos, cypermethrin, chlorpyrifos were the largest detected and mounted to 0.99, 0.15, 0.015, 0.012 mg/kg respectively as a median values. Residues of methamidofos in only 2 samples were above the European MRLs.,


Artificial intelligence review:
Research summary
تُعدّ هذه الدراسة من الدراسات الهامة التي تهدف إلى تقدير بقايا المبيدات في ثمار البندورة المأخوذة من سوق الخضار المركزي في مدينة درعا. تم جمع 66 عينة من البندورة بين أكتوبر 2009 وأكتوبر 2010، وتم تحليلها باستخدام أجهزة الكروماتوغرافيا الغازية المزودة بكواشف مختلفة. استخدمت طريقة QuEChERS لاستخلاص بقايا المبيدات، وتم تحديد خطية الكواشف وحدود الكشف لكل مبيد. أظهرت النتائج أن 54.5% من العينات احتوت على بقايا مبيدات، وكان الكلوربيرفوس والسايبرمترين من أكثر المبيدات تكراراً. تجاوزت بقايا الميثاميدوفوس في عينتين الحد الأقصى المسموح به بحسب دستور الغذاء في الاتحاد الأوروبي، بينما كانت بقايا المبيدات الأخرى ضمن الحدود المسموح بها. توصي الدراسة بضرورة إجراء دراسات مراقبة دورية لبقايا المبيدات في الخضار والفواكه لضمان سلامة الغذاء.
Critical review
دراسة نقدية: تُعد هذه الدراسة خطوة مهمة نحو فهم مدى تلوث الخضار بالمبيدات في الأسواق المحلية، إلا أنها تفتقر إلى بعض الجوانب التي يمكن أن تعزز من موثوقيتها. على سبيل المثال، كان من الأفضل تضمين عينات من مناطق مختلفة في سوريا للحصول على صورة أشمل. كما أن الدراسة لم تتناول تأثيرات هذه البقايا على الصحة العامة بشكل مفصل، وهو جانب مهم يجب أخذه بعين الاعتبار. بالإضافة إلى ذلك، كان من الممكن تحسين منهجية التحليل بإضافة تقنيات حديثة أكثر دقة في الكشف عن بقايا المبيدات.
Questions related to the research
  1. ما هي نسبة العينات التي احتوت على بقايا مبيدات في الدراسة؟

    54.5% من العينات احتوت على بقايا مبيدات.

  2. ما هي أكثر المبيدات تكراراً في العينات المدروسة؟

    الكلوربيرفوس والسايبرمترين كانا من أكثر المبيدات تكراراً.

  3. هل تجاوزت بقايا أي من المبيدات الحد الأقصى المسموح به؟

    نعم، تجاوزت بقايا الميثاميدوفوس في عينتين الحد الأقصى المسموح به بحسب دستور الغذاء في الاتحاد الأوروبي.

  4. ما هي التوصيات التي قدمتها الدراسة؟

    توصي الدراسة بضرورة إجراء دراسات مراقبة دورية لبقايا المبيدات في الخضار والفواكه لضمان سلامة الغذاء.


References used
Al Kurdi, G. M. 2000. Study of food contamination with pesticide residues in Kalubia governorate Ph. D theses. Faculty of agriculture. Ain Shams university. Egypt
Bempah, C. K., A. Donkor., P. O. Yeboah., B. Dubey and P. Osei-Fosu. 2011. A preliminary assessment of consumer’s exposure to organochlorine pesticides in fruits and vegetables and the potential health risk in Accra Metropolis, Ghana. Food Chemistry, 28: 1058–1065
Berrada, H., M. Fernández., M. J. Ruiz., J. C. Moltó., J. Mañes and G. Font. 2010. Surveillance of pesticide residues in fruits from Valencia during twenty months (2004/5). Food Control, 21: 36-44
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