Getting to the bottom of arsenic standards and guidelines

摘要

Inorganic arsenic (As_i) is ubiquitous in the environment (1). As, is a Class 1, nonthreshold carcinogen (2-4), for which risk assessments are based on a linear dose response (2). Thus, in effect, As_i is everywhere and, if current assumptions regarding As_i risk assessment are correct, every exposure constitutes a risk.