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The book focuses on heavy metals that have damaged the ecosystem Earth and its life forms. It characterizes natural and anthropo- genic sources of pollutants, identifies physical, chemical and biological conditions that affect their ecosystem mobiss and concentrate to toxic levels in organisms. The text reviews the different environmental assessment monitoring samples and analytical techniques used to determine how sample types bond the metals and hence affect their bioavailibility and bioaccumulation. Consideration is given to existing remediation methodologies and those being researched. Finally, the book emphasizes how pre-planning during project studies can result in incorporation of technologies that will prevent or at least greatly alleviate release of toxic metals to our living environment.