Monitoring the environment for metals has become a topic of considerable importance, not only to those industries emitting heavy metals but also to surveillance agencies and other organizations assessing the impact of metals on the environment. Our goal is to provide a comprehensive and easyto- read text for anyone working in the environmental analytical chemistry arena and to provide essential information to consultants and regulators about analytical and quality control procedures helpful in their evaluation and decision-making procedures. The book is also useful for technicians in their everyday chores