The study of various phenomena related to environment has gained prime importance in last two decades. Environmental pollution has become one of the most important issues of global concern. In the recent years, the terms such as ozone depletion, greenhouse effect, acid rains, etc., have become the hot topics of discussion among the socially and educationally advanced people. Whenever we talk about these hot problems we tend to curse industrialisation and related developments in transportation, refrigeration, air conditioning and the manufacture of all kinds of chemicals. Chemistry plays a significant role in our environment, which literally means surroundings. Large number of chemical phenomena are associated with the species present in the environment. The branch of chemistry which deals with the study of various chemical phenomena occurring in the environment is called environmental chemistry.