Abstract
Nearly 70-80% of the world's population relies on non-conventional medicines, often derived from herbal plants, according to World Health Organization (WHO) figure. Medicinal plants are starting material for any herbal preparation such as herbal medicines, herbal teas, herbal oil etc. These preparations are being used worldwide due to their therapeutic potential and as they are considered to be safe as compared to allopathic medicines. Lead, cadmium, chromium, nickel, arsenic and mercury are the most common toxic metals that have become a matter of concern due to the reports of their contamination in various herbal preparations and herbal ingredients .Although the minimum acceptable limits have been laid out as safety concern. Heavy metal are evaluated by AAS, ICP-OES, ICP-MS, XRFS, HPLC, DPP, NAA, ASV and disposable sensor applications for achieving therapeutic efficacy and evolutions of heavy metal in herbals.
Highlights
There is no clear definition of heavy metals but density is considered to be the most defining factor
Mercury, cadmium, Nickel, chromium and arsenic are the most common toxic metals that have become a matter of concern due to the reports of their contamination in various herbal preparations and herbal ingredients [1]
This study examines pollution levels and health danger to humans caused by heavy metal especially on herbs medicines, which provide a basis for evidence on which you can continue to build preventive measures, set consistent standards, and controls external contamination
Summary
This work was carried out in collaboration among all authors. Author MS designed the study, and wrote the first draft of the manuscript. Authors VG and SB managed the analyses of the study. All authors read and approved the final manuscript. & L. de Beaumont Bonelli for cancer Research, Italy. (1) Sangeetha R K, Sri Ramakrishna Institute of Paramedical Sciences, India. (2) Nguyen Thanh Giao, Can Tho University, Vietnam
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