The following are the important toxic metals of global concern: 1. Arsenic 2. Lead 3. Mercury 4. Chromium 5. Cadmium 6. Copper 7. Zinc 8. Aluminium 9. Manganese. 1. Arsenic: Arsenic is particularly difficult to characterize as a single element because its chemistry is so complex and there are many different arsenic compounds. It may […]