Читать книгу Environmental and Agricultural Microbiology - Группа авторов - Страница 57

Zinc occupied a place in group IIB of periodic table. It is a transition element normally present in soil approximately 70 mg kg⁻¹ in ground rocks [47]. It is an essential micro nutrient in our diet but higher concentration is toxic and may cause anemia and cholesterol complications in human beings and nausea and vomiting in children [22]. Currently, Zn concentration is found to be rising because of increasing anthropogenic activities. Mostly, industrial sectors and other human activities like mining, incineration of coal and waste, and steel dispensation are major causes for increase in Zn concentration in the environment. Other sources of Zn contamination are crops or drinking water stored in metal chambers [23].