بررسی مخاطره سلامت تجمع عناصر آرسنیک و روی در گیاهان دارویی عرضه ‌‌شده در بازار مصرف شهر‌ همدان

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانش‌‌آموخته کارشناسی ارشد محیط‌‌زیست، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران

2 استادیار گروه محیط‌‌ زیست، دانشگاه ملایر، ملایر، ایران

3 دانشیار گروه محیط‌‌ زیست، واحد همدان، دانشگاه آزاد اسلامی، همدان، ایران

چکیده

استفاده از گیاهان دارویی در ارتقای سلامت جامعه انسانی نقش اساسی دارد. با توجه به این­‌که گیاهان مهم‌­ترین مسیر انتقال فلزات سنگین به زنجیر غذایی انسان و چرخه­‌های زیستی محسوب می‌­شوند، این پژوهش با هدف بررسی مخاطره سلامت تجمع فلزات سنگین آرسنیک و روی در آویشن شیرازی، بنفشه، پونه و عناب عرضه ­شده در بازار مصرف شهر همدان در سال 1394 انجام یافت. بدین منظور پس از تهیه 3 نمونه از هر گیاه دارویی و هضم اسیدی نمونه‌ها مطابق روش استاندارد، غلظت تجمع‌­یافته عناصر توسط دستگاه جذب اتمی در سه تکرار خوانده شد. هم­‌چنین پردازش آماری نتایج نیز توسط نرم‌­افزار آماری SPSS انجام یافت. نتایج نشان داد که بیشینه میانگین غلظت تجمع‌­یافته عناصر آرسنیک و روی در نمونه‌های گیاهان دارویی بر حسب میکروگرم در کیلوگرم با 026/0±035/0 و 520±1880 به­‌ترتیب مربوط به آویشن شیرازی و بنفشه می‌­باشد. نتایج محاسبه شاخص مخاطره سلامت برای همه نمونه‌­ها کوچک‌­تر از یک بود. همچنین مقایسه میانگین غلظت عناصر با استانداردهای سازمان جهانی بهداشت نیز بیان‌­گر آن است که میانگین غلظت عناصر آرسنیک و روی در همه نمونه­‌های گیاهان دارویی مورد آزمایش کم‌­تر از حد استاندارد می‌­باشد. بنابراین مصرف کنترل‌­شده گیاهان دارویی مورد بررسی اثر سوء بهداشتی بر سلامت مصرف‌­کنندگان ندارد. ولی با توجه به قابلیت تجمع‌زیستی فلزات سنگین در طولانی‌­مدت، نسبت به پایش دوره­‌ای و منظم گیاهان دارویی از نظر غلظت تجمع‌یافته آلاینده‌­های شیمیایی به‌­منظور حفظ امنیت غذایی توصیه می‌­شود.

کلیدواژه‌ها


عنوان مقاله [English]

Levels and health risk assessment of As and Zn in Shirazi thyme, sweet violet, pennyroyal and jujube marketed in Hamedan City

نویسندگان [English]

  • M. Karimi 1
  • L. Tayebi 2
  • S. Sobhanardakani 3
1 M.Sc. Graduate in Environmental Sciences, Department of the Environment, Hamedan Branch, Islamic Azad University, Hamedan, Iran
2 . Assistant professor, Department of the Environment, Malayer University, Malayer, Iran
3 Associate Professor, Department of the Environment, Hamedan Branch, Islamic Azad University, Hamedan, Iran
چکیده [English]

The use of medicinal herbs plays a vital role in improving the health of human society. Since the plants are the most important transmission route of heavy metals into human food chain and biological cycles, this study was conducted to assess the health risk of concentration of As and Zn in Shirazi thyme, sweet viola, pennyroyal and jujube marketed in Hamedan City during 2015. After preparation of 3 samples of each medicinal plant, the samples were digested in acid according to the standard methods. The concentration of each element in the samples was determined using atomic absorption spectroscopy (AAS) in 3 replicates. Statistical analyses were performed using SPSS statistical package. The results showed that the maximum mean concentrations of As and Zn were 0.035±0.026 and 1880±520 µg/kg related to thyme and viola, respectively. The results of health index for all samples were found lower than one. Moreover, the mean concentration of As and Zn in all samples were lower than WHO permissible limits. Although controlled consumption of medicinal plants has not adverse effect on the consumers’ health, concerning to the bioaccumulation of heavy metals in the long-term, regular periodic monitoring of chemical pollutants content especially heavy metals in medicinal plants are recommended for food safety.

کلیدواژه‌ها [English]

  • Medicinal plant
  • Heavy metal
  • Food Safety
  • Health risk
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