This book is mainly focuses on 1. determination of heavy metals 2. comparison of the three digestion methods 3. describes Ethiopian spices 4. explains the advantage of Atomic absorption spectroscopy 5.evaluate the methods in terms of cost, reliability, recovery, rapidity and suitability 6.determine the concentrations of lead, chromium and cadmium in Black cumin, Garlic, Ginger and Fenugreek 7. make comparison between the metal contents in all tested spice samples.