NaDos: A real-time, wearable, personal exposure monitor for hazardous organic vapors

Abstract We have demonstrated an intrinsically safe, near-real-time, personal exposure monitor (PEM) for measuring naphthalene in the breathing zone of the wearer. The NaDos PEM is a fully integrated, battery powered,  3 . The performance of the instrument has been demonstrated across a range of naphthalene concentrations from 10 μg/m 3 to over 100 mg/m 3 . Performance was found to meet or exceed NIOSH recommended acceptance criteria of ± 25% of the true concentration, >95% of time. To deliver this accuracy in a real-world environment, the monitor accurately removes the effects of both humidity (0–95% RH) and temperature (0 °C to >45 °C). A major feature is its real-time nature, giving highly specific, high sensitivity, real time data which is a superior predictor of human health outcomes.