ABSTRACT
Environmental pollution involving heavy metals has attracted a great deal of attention in recent years, driven especially by concerns for human health. Air pollution and water pollution have increased human exposure to heavy metals, and research has revealed important health consequences of such exposure for many of the heavy metals. In many parts of the world, there have also
3.1 Introduction ............................................................................................................................ 59 3.1.1 Pollution, Heavy Metals, and Soil .............................................................................. 59 3.1.2 What Is a Heavy Metal? .............................................................................................60 3.1.3 Sources ........................................................................................................................60
