ISSN 2321–3647
Sun, 19 Nov 2017

Determination of Heavy Metal Levels in Pakistani Branded Herbal Medicines Used for Cardiac and Liver Disorders by Atomic Absorption Spectroscopy

Riaz Ahmad1, Shuja Abbas Khan1, Farhat Abbas1, Nadia Bukhari1, Mirwase Khan2, ShaukatShujah1*

1. Department of Chemistry, Kohat University of Science and Technology Kohat 26000, KPK, Pakistan.

2. Ajmal Tibbia College Rawalpindi, Pakistan.


Heavy metals levels in Pakistani branded herbal medicines used for cardiac and liver disorder were investigated using atomic absorption spectroscopy. The collected samples were prepared for analysis by wet digestion method using nitric acid and per choleric acid. Five metals iron, lead, copper, manganese and zinc were analyzed. Iron has the highest concentration with a range of 91.25-10.00 ppm and Pb the lowest with values in the range 8.15-0.50 ppm in the herbal medicines used for heart disorder. Copper and zinc was found in the range of 18.35-1.40 ppm and Zn 49.20-8.65 ppm respectively whereas manganese was below detection limit. In herbal medicines used for liver disorder zinc has the highest concentration with a range of 70.20-15.60 ppm and Pb the lowest values in the range of 28.40-4.70 ppm. Iron and copper were found in the range of 59.20-11.90 ppm and 33.40-0.50 ppm respectively, where manganese was below detection limits. Results are comparable with the reported values in literature. The heavy metal levels were below toxic limits in all of the samples.

Keywords: Heavy metals, herbal medicines, atomic absorption spectroscopy

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