Abstract: Biomonitoring, the measurement of chemicals in human tissues and fluids, is becoming commonplace, and biomonitoring data has proved to be an important resource for identifying the presence of chemicals, both natural and synthetic, in human populations. However, the concentrations of the chemicals detected in human samples are generally very low, typically in the parts per billion (ppb) or parts per trillion (ppt) range, and the degree of risk posed by these chemicals depends on whether the exposure levels approach those known to cause toxicity ...
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Topics: 
Environmental chemistry
Toxicology