Volume 15, Issue 45 (9-2014)                   Zanko J Med Sci 2014, 15(45): 17-25 | Back to browse issues page

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Hashemi S, Rashidipour M, Rahimi A, Ghiasvand A, Hosseini F. A study of the pollution of ten popular medicinal plants by heavy metals in Khoramabad (Iran). Zanko J Med Sci 2014; 15 (45) :17-25
URL: http://zanko.muk.ac.ir/article-1-33-en.html
Abstract:   (4838 Views)
Background and Aim: Nowadays, pollution of soil and water resources by heavy metals has become a serious and extending problem. These pollutions may be absorbed by different agricultural products including medicinal plants and they may be consumed by humans. Due to the increasing use of medicinal plants, it is worth studying the possibility of pollution of these plants by heavy metals. The goal of this study is to investigate the pollution of popular medicinal herbs in Khoramabad by heavy metals. 
Materials and Methods: Twenty three samples from ten medicinal plants with different origins were purchased from herbal medicine markets in Khoramabad. The heavy metals were extracted from the samples by leaching with nitric acid. Cd, Cr, Cu and Pb were measured by electrothermal atomic absorption spectrometry and Hg was determined by cold vapor atomic absorption spectrometry. 
Results & Conclusion: The results of the determination of heavy metals in the medicinal plants showed no evidence of a significant pollution of the samples by Cr, Cu, Pb and probably Hg. All the concentrations of these metals were beyond the dangerous levels. For Cd, on the other hand, some significant contaminations were observed in three of the studied samples.
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Type of Study: Research | Subject: Special
Received: 2014/08/8 | Accepted: 2014/09/2 | ePublished: 2014/09/16

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