Table 1 Air Quality Guidelines for Europe, Second Edition published by the World Health Organisation (WHO) state that a carboxyhemoglobin (COHb) level of 2.5% should not be exceeded as determined in ambient carbon monoxide (CO) concentrations after a given exposure period
From: Prevalence of hidden carbon monoxide poisoning in auto service workers; a prospective cohort study
CO concentration (mg/m3) | CO concentration(ppm) | Exposure Time (Minute) |
|---|---|---|
100 | 90 | 15 |
60 | 50 | 30 |
30 | 25 | 60 |
10 | 10 | 480 |