بررسی مقادیر فلزات سنگین و ارزیابی میزان پتانسیل خطر در نمک دریاچه مهارلو و معدن کرسیا

نوع مقاله : مقاله پژوهشی

نویسندگان

1 (استادیار، بخش مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز، داراب، ایران )

2 (دانشجوی کارشناسی، بخش مرتع و آبخیزداری، دانشکده کشاورزی و منابع طبیعی داراب، دانشگاه شیراز، داراب، ایران)

چکیده

یکی از مهمترین مواردی که همواره سلامت جوامع بشری را با تهدید مواجه ساخته آلودگی مواد غذایی به فلزات سنگین و رسیدن به محدوده خطر است. برای انجام این تحقیق در یک مطالعه موردی و کار آزمایشگاهی مقادیر عناصر سنگین (Cd،Zn ،Cu ،Pb ، Mn ، NiوFe) و پتانسیل خطر آنها برای سلامت انسان از طریق مصرف نمک دریاچه مهارلو و معدن کرسیا برای دو گروه پذیرنده کودک و بزرگسال بررسی گردید. برای انجام این تحقیق از دریاچه مهارلو و معدن نمک کرسیا نمونه­گیری شد و عناصر سنگین آن تعیین گردید. مقادیر ورود روزانه عناصر به بدن تعیین و با مقدار مرجع مقایسه شد. مقادیر پتانسیل خطر برای تمامی عناصر نمک دریاچه مهارلو برای بزرگسال و کودک کمتر از یک بود. این گفته به این معنی است که خطر ناشی از فلزات مورد بررسی در محدوده قابل‌قبول قرار دارد. برای نمک کرسیا مقادیر پتانسیل خطر برای فلز Pb و گروه کودک بیشتر از یک و برای بقیه فلزات (کودک و بزرگسال) کمتر از مقدار یک بود و نشان می­دهد که احتمال بروز آثار سوء بیماری­های غیر سرطانی برای کودکان وجود دارد. در بین فلزات مورد بررسی، برای نمک دریاچه مهارلو و نمک کرسیا بیشترین مقدار پتانسیل خطر (برای میانگین نمونه­ها) برای فلز Pb و کمترین آن برای فلز Zn به­دست آمد. مقدار شاخص خطر­پذیری برای فلزات مورد بررسی برای بزرگسال و کودک، برای نمک مهارلو کمتر از یک و برای نمک کرسیا بیشتر از یک بود که نشان می­دهد اثرات سوء بیماری­های غیر سرطانی به­دلیل مصرف عناصر سنگین ناشی از مصرف نمک کرسیا وجود دارد. مقدار آستانه نمک مصرفی برای سطح خطر 1، خطر مزمن ناچیز برای نمک مهارلو برای کودک و بزرگسال به ترتیب برابر 8/1003 و 4/4133 mg/day و برای نمک کرسیا برای کودک و بزرگسال به ترتیب برابر 2/13 و 5/543 mg/day تعیین گردید.

کلیدواژه‌ها

عنوان مقاله [English]

Heavy Metals Investigation and the Potential Risk Assessment in the Salt of Maharloo Lake and Korsia mine

نویسندگان [English]

  • Farid Foroughi 1
  • Rahil Ebrahimpour 2
1 (Assistant Professor, Department of Range and Watershed Management, College of Agriculture and Natural Resources of Darab, Shiraz University, Darab, Iran)
2 (Undergraduate student, Department of Range and Watershed Management, College of Agriculture and Natural Resources of Darab, Shiraz University, Darab, Iran)
چکیده [English]

One of the most important issues that has always threatened the health of human societies is the contamination of food with heavy metals and reaching the danger limit. To conduct this research in a case study and laboratory work, the amounts of heavy metals (Cd, Zn, Cu, Pb, Mn, Ni and Fe) and their Target hazard quotient of human health through salt consumption of Maharloo Lake and Korsia salt mine were investigated for both child and adults groups. For this study, Maharloo Lake and Korsia salt mine were sampled and their heavy metals were determined. The daily intake of metals was determined and compared with the reference value. The target hazard quotient, THQ for all metals of Maharloo Lake salt for adults and child was less than one. This means that the hazards of the proposed metals are within the acceptable limits. For korsica salt, the THQ for lead metal (for child group) was more than one and for other metals (child and adult groups) was less than one, indicating that non-cancerous adverse effects were likely to occur in childs. Among the proposed metals, the highest THQ was obtained for lead metal and the lowest one for zinc metal for Maharloo salt and korcia salt mine. The Hazard index for adults and child was less than one for Maharloo salt and more than one for Korsia salt, indicating that there are adverse effects of non-cancerous diseases due to the consumption of heavy elements caused by the consumption of this salt. Salt consumption threshold for hazard level 1, which is negligible in terms of chronic hazard, for Maharloo Lake salt, for child and adults were 1003.8 and 4133.4 mg/day and for Korsica salt for child and adults were 13.2 and 543.5 mg/day, respectively.

کلیدواژه‌ها [English]

  • Risk assessment
  • Environmental pollution
  • Heavy metals
  • Maharloo Lake
  • Korsia

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تحقیقات آب و خاک ایران
دوره 52، شماره 2
اردیبهشت 1400
صفحه 361-377

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