Introduction: Beryllium is rare in the earth’s crust (6×10−4 % per weight) and its presence is rather limited. It does not occur as free metal in nature.    There are about 30 …

Introduction Nicotine is an alkaloid found in the leaves of tobacco. Nicotine, 3-(1-methyl-2-pyrrolidinyl) pyridine is a colourless, less to pale yellow, hygroscopic oily liquid present in the leaves of Nicotiana …