ارزیابی فاکتورهای مؤثر بر میزان جیوه در گلبول¬های قرمز خون(RBCs) برخی ساکنان شهرهای بندرعباس و ماهشهر
محورهای موضوعی : آلودگی های محیط زیست (آب، خاک و هوا)نرجس اکاتی 1 , عباس اسماعیلی ساری 2
1 - استادیار گروه محیط زیست، دانشکده منابع طبیعی، دانشگاه زابل، زابل، سیستان و بلوچستان، ایران. * (مسوول مکاتبات)
2 - استاد گروه محیط زیست، دانشکده منابع طبیعی و علوم دریایی، دانشگاه تربیت مدرس، نور، مازندران، ایران.
کلید واژه: جیوه, گلبول¬های قرمز خون(RBCs), مصرف ماهی, ماهشهر, بندرعباس.,
چکیده مقاله :
زمینه و هدف: مواجهه انسانی با ترکیبات جیوه به دلیل سمیت بالای آن به عنوان نگرانی عمده در سراسر جهان می باشد. این مقاله سعی دارد به ارزیابی فاکتورهای مؤثر بر میزان جیوه گلبولهای قرمز خون (RBCs) و میزان جذب روزانه جيوه در برخی ساکنان شهرهای بندرعباس و ماهشهرکه مصرف ماهی بالایی دارند، بپردازد.
روش بررسی: در این مطالعه توصیفی- تحلیلی و پرسشنامه ای، مقادیر جيوه کل در RBCs خون 53 نفر از افراد ساکن شهرهای بندرعباس و ماهشهر توسط دستگاه جذب اتمی مدل Perkins Elmer 4100 مجهز به Cold Vapor اندازهگيری گردید.
یافته ها: میانگین جیوه در RBCs و کل خون افراد در شهر بندرعباس به ترتیب 21/17 و µg/L 7/7 و در ماهشهر 41/44 و µg/L 98/19 بدست آمد. میانگین جذب روزانه جیوه افراد در شهرهای بندر عباس و ماهشهر به ترتیب 20/0 وµg/kg bw/d 53/0 محاسبه گردید. میزان جذب روزانه جیوه در افرادی که بیش از 2 بار در هفته ماهی مصرف میکردند در مقایسه با سایر گروهها با مصرف ماهی کم تر، به طور معنی داری بالاتر بدست آمد. متغیرهای مصرف ماهی، شهر محل سکونت، خانواده صیاد یا غیر صیاد بر روی ميزان جیوه RBCs تاثیرگذار بودند؛ اما اثر سن، جنسیت و تعداد دندانهای پرشده با آمالگام بر روی میزان جیوه RBCs معنیدار نبود.
بحث و نتیجه گیری: مقایسه مقادیر جیوه خون و جذب روزانه آن در افراد مورد مطالعه با استانداردهای تعیین شده نشان می دهد که افراد ساکن در ماهشهر مواجهه بالایی با جیوه دارند. از آنجا که میزان مصرف ماهی مهمترین عامل جذب جیوه در بدن می باشد، مطالعات دقیق ارزیابی ریسک جیوه و تعیین حدود مجاز مصرف ماهیان برای گروه های حساس جمعیت ضروری به نظر می رسد.
Background and Objective: Human exposure to mercury compounds has been of great public concern around the world due to mercury's high toxicity. The present study tries to assess the influencing factors on mercury levels in red blood cells (RBCs) and mercury daily intake in some residents of Bandar Abbas and Mahshahr cities.
Material and Methodology: In this cross-sectional and questionnaire study, the total mercury concentrations in RBCs of 53 people living in Bandar Abbas and Mahshahr cities were measured by Cold Vapor Atomic Absorption Spectrometer model equipped with a Perkins Elmer 4100.
Findings: The mean mercury concentrations in RBCs and whole blood of residents in Bandar Abbas were 17.21 and 7.7 μg/L, and for residents in Mahshahr were 44.41 and 17.217 μg/L, respectively. The means of mercury daily intake of people in Bandar Abbas and Mahshahr were obtained 0.20 and 0.53 µg/kg bw/d, respectively. Mercury daily intake in people who ate fish more than 2 meals per week was significantly higher than the other groups with lower fish consumption. The fish consumption of people, city of residence, fishermen and non-fishermen family had statistically significant effect on mercury in RBCs but the age, gender and number of dental amalgam fillings variables had no statistically significant effect on mercury in RBCs.
Discussion and Conclusion: The Comparison of blood mercury levels and mercury daily intake in subjects with established standards shows that people living in Mahshahr have high mercury exposure. As fish consumption is a major factor effect on mercury daily intake in human body, it is appears to be necessary the mercury risk assessment studies and setting the fish consumption limit for sensitive groups of the population.
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