A new environmental monitor for nitrogen dioxide, ozone and aldehydes

摘要

In this paper we have demonstrated multi-analyte PiezOptic badge systems capable of monitoring oxidising gases (ozone and nitrogen dioxide, for 24-hour exposures) and aldehydes (glutaraldehyde and formaldehyde, for 15-minute exposures) in mixtures, with automatic compensation for effects of ambient humidity. A reagent spot providing compensation for temperature variations is also under development. The extensive calibration studies required to develop algorithms for Implementation of automatic derivation of the individual concentrations in a wide range of mixture compositions, temperatures and humidities are currently in progress. More detailed studies to optimise shelf-life and selectivity are also planned. The sensitivity, the interference compensation feature and the general ease of use with minimal training are unique advantages of these PiezOptic systems. They provide new opportunities for reliable personal exposure monitoring in a wide range of medical research and occupational health applications.