Carbon Monoxide Quick Reference Guide |
Time |
Standard |
Info |
|
SPARROW |
||||
1 – 2 ppm |
|
|
Low
levels may be found in some environments |
|
9 ppm |
For 8 hours |
WHO (World Health
Organization) & US EPA
(Environmental Protection Agency) Standard for CO exposure in Outdoor Air |
Sensitive
individuals are at greater risk to low levels of CO: Pregnant
women, infants, elderly, and those with respiratory illnesses |
|
15 ppm – SPARROW’s 1st alert
level |
||||
26 ppm |
1 hour |
WHO Guidelines for recommended exposure
threshold |
Varying
health effects with long-term exposure |
|
35 ppm |
1 hour |
US EPA Standard for
Outdoor Air |
Not
to be exceeded more than 1 time per year |
|
35 PPM –SPARROW’s 2nd alert level |
||||
52 ppm |
30 minutes |
WHO Guidelines for
recommended exposure threshold |
|
|
70 PPM
– SPARROW’s 3rd
alert level |
||||
87 ppm |
15 minutes |
WHO Guidelines for
recommended exposure threshold |
Headache,
fatigue, dizziness, nausea |
|
330 ppm |
1 hour |
NRC (National Research
Council) AEGL-3 |
Lethal |
|
600 ppm |
30 minutes |
NRC AEGL-3 |
Lethal |
|
1700 ppm |
10 minutes |
NRC AEGL-3 |
Lethal |