Abstract
Arsenic (As) is considered the most toxic xenobiotic according to the Agency for Registration of Toxic Substances and Disease (ATSDR) in the United States. Among the chemical species present in the environment, inorganics (As3+ and As5+) are the most toxic to humans and the methylated forms are less toxic (monomethyl arsenic, dimethyl arsenic, and arsenobetaine). When present in the soil,…