Geochemistry is defined as the study of the processes that control the abundance, composition, and distribution of chemical compounds and isotopes in geologic environments. Geochemists study the composition, structure, processes, and other physical aspects of the Earth. They examine the distribution of chemical elements in rocks and minerals, as well as the movement of these elements into soil and water systems.These scientists can also use their expertise to reduce pollutants and increase water quality. Employed by oil companies, environmental consultancies, universities and research institutes, geochemists use state-of-the-art equipment and scientific techniques to analyse rocks, soil and minerals