برآورد پتانسیل خطر و جذب روزانه فلزات سنگین در برخی ارقام انگور تولیدی در شهر ملایر

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشیار گروه محیط‌زیست، دانشکده منابع طبیعی و محیط‌زیست، دانشگاه ملایر، ملایر، ایران

2 دانشجوی کارشناسی ارشد آلودگی محیط‌زیست، دانشکده منابع طبیعی و محیط‌زیست دانشگاه ملایر

چکیده

در این پژوهش جذب روزانه و خطر مصرف میوه انگور ازنظر آلودگی به فلزات سنگین در ملایر اندازه­گیری شد. برای نمونه­برداری ارقام انگور پنج روستا انتخاب و غلظت سرب، مس، نیکل، منگنز و روی با دستگاه جذب اتمی شعله و کوره گرافیتی اندازه­گیری شد. برای ارزیابی سطح آلودگی یک فلز از شاخص­ تک عاملی (SFI) و برای ارزیابی آلودگی تجمعی فلزات سنگین از شاخص­ تجمعی (IPI) استفاده شد. میزان غلظت مس، منگنز، روی، نیکل و سرب در نمونه­های کشمشی به‌ترتیب 28/0±05/1، 3/0±30/1، 11/0±60/0، 07/0±26/0 و 007/0±03/0، در نمونه­های عسکری به‌ترتیب 35/0±86/1، 21/0±23/1، 15/0±63/0، 08/0±27/0 و 033/0±04/0 و در نمونه­های فخری به‌ترتیب 52/0±93/0، 39/0±18/1، 11/0±65/0، 10/0±26/0 و 0034/0±03/0 میلی­گرم بر کیلوگرم وزن مرطوب تعیین شد. که این مقادیر پایین­تر از حد مجاز FAO/WHO بودند. در میان ارقام موردمطالعه، رقم عسکری حاوی بالاترین غلظت فلزات سنگین نسبت به دو رقم دیگر بود و رقم فخری پایین­ترین غلظت­ها را نشان داد. به‌طورکلی مقادیر کمی از سرب در هر سه رقم انگور مشاهده شد. در مقایسه با دو رقم دیگر آلودگی تجمعی فلزات سنگین در رقم عسکری بالاتر بود، اگرچه آلودگی تجمعی فلزات سنگین در سه رقم انگور در سطح ایمن بودند. بالاترین میزان مصرف روزانه (DIR) مربوط به رقم عسکری بود. مقادیر پتانسیل خطر(THQ) برای تمام فلزات کوچک‌تر از یک به‌دست آمد. شاخص تجمعی فلزات سنگین در سه رقم انگور پایین بود و آلودگی فلزات سنگین در سطح ایمنی 7/0 IPI ≤ بود. محاسبه میزان مصرف روزانه (DIR) و مقادیر پتانسیل خطر(THQ) نشان داد که مصرف ارقام انگور موردمطالعه هیچ خطری برای سلامتی ندارند.

کلیدواژه‌ها


عنوان مقاله [English]

Estimation of potential risk and daily intake of heavy metals in grape fruit

نویسندگان [English]

  • E. Solgi 1
  • M. Borchaloei 2
1 Associate Professor Department of Environment, Faculty of Natural Resources and Environment, Malayer University, Malayer, Iran
2 MSc Student ‎ of Environmental Pollution, Faculty of Natural Resources and Environment, Malayer University, Malayer, Hamedan, Iran
چکیده [English]

In this research, the daily intake and risk assessment of grape fruit withtheperspectiveofheavy metal contamination were measured in Malayer city. For sampling, five villages were selected. The concentrations of heavy metals were determined by atomic absorption spectrophotometry with flame and graphite furnace technique. For assessment the contamination level of each metal, the single factor index (SFI), and for assessment of the cumulative contamination of heavy metals, the integrated pollution index (IPI) were applied.The concentration level of heavy metals in the grape cultivars was found in the decreasing order as Cu>Mn>Zn>Ni>Pb and lower than the maximum permissible levels recommended by FAO/WHO. Among the studied cultivars, Askari cultivar contained higher heavy metal concentrations compared to the other two cultivars and Fakhri cultivar showed the lowest concentrations. In general, lead concentration was found to be low in the three grape cultivars. The integration pollution index (IPI) of heavy metals was higher in cv. Askari, as compared with the two other cultivars, although the IPI of heavy metals in three grape cultivars were at safe level. In general, the highest DIR was obtained for the Askari cultivar. The THQ of all metals were < 1. The integrated pollution index of heavy metals in three grape cultivars was low and heavy metals pollution was within the safe limits with IPI ≤ 0.7. The DIR and THQ showed that the consumption of grape cultivars pose no risk to health.

کلیدواژه‌ها [English]

  • Grape cultivars
  • Heavy metals
  • Risk Assessment
  • Daily intake rate (DIR)
  • Malayer
 

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