“…In fact, hair is commonly used for several toxic metals such as mercury, arsenic, lead or cadmium (e.g. Samanta et al, 2004;Morton et al, 2002;Puchyr et al, 1998;Loranger et al, 2002;Rodushkin and Axelsson, 2000). There are several advantages of using hair to monitor exposure history, since hair is a minor excretory organ (Ho et al, 2001).…”