From: Estimations of the lethal and exposure doses for representative methanol symptoms in humans
Methanol in respiratory air (mg/L)
Urinary methanol concentration (mg/L)
References
Occupational exposure
66.6
23
[18]
70
21.8
[17]
152
40
181.4
74
[37]
200
42
[14]
26
Background exposure
0.06–0.32 (μg/l)
0.73
[1]
-
1.1
[17] (as control group)