Study on the Applicability of Simple Measurement Method for NO₂ as a Personal Monitor

Abstract

An attempt was made to study the applicability of simple method of nitrogen dioxide measurement as a personal monitor usable in some field study. The device which we tested was a modification of so called simplified measurement method for NO₂ using filter paper adsorbed triethanolamine.
We did two experiments, the one was preliminary exposure experiment and the other was the experiment exposing the device under the circumstances like an ordinary kitchen.
The coefficient of variation of the results of measurement of 24 hour exposure was less than 10 % and the range of the results was from 20 ppb to 200 ppb. They showed a good linearity within the range above noted.
By simple regression analysis between the measurement results by chemiluminescent method and that of the simple method, the error of estimation of the latter was±21 ppb (confidence coefficient was 90%).
According to these results, we believe that this simple measurement apparatus for NO₂ can be used for the evaluation of personal exposure dose for NO₂.