Читать книгу Groundwater Geochemistry - Группа авторов - Страница 108

The heavy metals, which are denser than water, are easily sustained in water and create heavy metal pollution in water. As documented in the literature, the presence of heavy metal contamination in water is more threatening to human health, as well as animals and marine life, owing to their carcinogenic nature. These include arsenic (As), mercury (Hg), lead (Pb), cadmium (Cd), chromium (Cr), zinc (Zn), antimony (Sb), and nickel (Ni). The exposure to heavy metals by human beings is lethal and toxic (Mohankumar et al. 2016; Talabi and Kayode 2019; Ahamad et al. 2020; Pooja et al. 2020). To address the carcinogenic nature of the elements, various foundations like the WHO, Bureau of Indian Standard (BIS), United States Environmental Protection Agency (US‐EPA), European Commission Environment (ECE), Australian Drinking Water Guidelines (ADWG), and Norma Official Mexicana (NOM)‐127‐SSA1‐1994 prescribe the limit (Fernandez‐Luqueno et al. 2013) of contaminants in water as described in Table 4.1.