Some 65 of the known 92 elements are metallic in nature. The term’ metal’ designates an element that is a good conductor of electricity whose electrical resistance is directly proportion to absolute 0T. In addition, metals share some distinctive characteristics such as high thermal conductivity and high density. Metallic elements are intrinsic components of the environment. Some 19 heavy metals of the known 65 metals are toxic in nature and cause a great threat to the living as well as non-living world, and so man is no exception. Actually toxic heavy metals are present at <0.1%levelsin the earth’s crust but anthropogenic activities such as smelting and mining of ores, releasing industrial wastes, use of metallic compounds in industries and in the production of vehicles and aeroplanes have released a large number of toxic metals and their salts into the environment. So, dispersion of heavy metals in environment has become a most challenging problem. If proper management and mass awakening right from grass root level to top policy makers have not been considered inevitable within time, no force on this earth can check the propagation of carcinogenic characters of the heavy metals. This book will be helpful in solving the crux of heavy metal pollution; as it is compilation of most advanced research articles of the scientists of repute in the concerned field. Besides, the book will be very much helpful for the students, research scholars, professors, scientists as well as for those who have interest in toxicology.
ABOUT THE AUTHOR Arvind Kumar
Dr. Arvind Kumar (b. 23-03-1953), University Professor, Department of Zoology, S.K. University, Dumka has 24 years' experience as an outstanding teacher and researcher. He is a recipient of National Merit Scholarship all through his college and university years and got meritorial fellowship of CSIR, New Delhi. He has been awarded Professor W.A. Nizami Gold Medal by the Zoological Society of India in 2000during 11th annual Congress. He did his M. Sc. In Zoology in 1976 and Ph.D. in 1982 on Eco-Physiology of Aquatic Insect from Bhagalpur University. He has done pioneering work in the field of limnology, aquatic insect ecology, biodiversity, conservation and tribal ecology. Dr. Kumar has successfully guided more than 11 research scholars for Ph.D. and got more than 205 research articles and reviews published in reputed national and international journals. He has authored/ edited more than 15 books and is also on the Editorial Board of more than a dozen esteemed national and international journal. Dr Kumar is a fellow, life-member and member of number of organizations and is also working as office bearer of some of them. Dr. Kumar has charied a number of sessions of different seminars/ symposia. He was also made convener of the National Symposium organized by S.K. University in 1998. He has been invited to different Universities, such as, University of Madras, Chennai, Dr. R.M.L. Avadh University, Faizabad, etc. to deliver lectures' on different topics of Environmental Sciences. Presently, Dr. Kumar is the Charman of Board of Environment Impact Assessment & Ecoplanning, Jharkhand, President of Tribal Ecoconservation Society ad Secretary General of Society of Environmental Sciences. He is also the Chief Editor of Journal of Current Sciences and the Editor of Indian Journal of Environment and Ecoplanning. Professor Kumar has visited Switzerland, France, Germany, Italy & Vienna in 2005 and China, Japan & Singapore in 2006 in order to deliver lectures during international symposia. He is a fellow, life member and member of number of organizations and is also working as office organizations and is also working as office bearer of some of them. Dr. Kumar has chaired a number of sessions of different seminars/symposia in India and abroad. He has been editing there international scientific journals at a time regularly since more than fifteen years and is Editor-in-Chief of The Ekologia , Chief Editor of Journal of Current Sciences & Editor of Indian Journal of Environment and Ecoplanning. Dr. Kumar is also the hon'ble member, Jharkhand State Pollution Control Board, Ranchi.
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