Changes in the distribution of short-term exposure concentration with different averaging times.

@article{Kumagai1995ChangesIT,
  title={Changes in the distribution of short-term exposure concentration with different averaging times.},
  author={Shinji Kumagai and Ichiro Matsunaga},
  journal={American Industrial Hygiene Association journal},
  year={1995},
  volume={56 1},
  pages={24-31}
}
For 10 workers (16 worker-chemical combinations) exposed to organic solvents, the distributions of 7.5-min time-weighted average (TWA) concentrations, 15-min TWAs, 30-min TWAs, and 60-min TWAs were examined by the Shapiro-Wilk W test and by plotting the TWA values and logarithmic values on probability paper. The hypothesis of normality of 7.5-min TWA and 15-min TWA was rejected for almost all combinations, while the hypothesis of lognormality was rejected only for a few combinations. For 30-min… CONTINUE READING