A Review on Heavy Metal Contamination in Herbals

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 preparation such as teas, oil etc. These preparations being used worldwide due their therapeutic potential and they considered be safe compared allopathic medicines. Lead, cadmium, chromium, nickel, arsenic mercury most common toxic metals that have become a matter concern reports contamination in various ingredients .Although minimum acceptable limits been laid out safety concern. Heavy metal evaluated by AAS, ICP-OES, ICP-MS, XRFS, HPLC, DPP, NAA, ASV disposable sensor applications achieving efficacy evolutions heavy herbals.