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EC number: 201-148-0
CAS number: 78-83-1
No significant EGG changes were recorded in any subject from either
group, either at rest or during the exercises.
In the 100 ppm group, the uptake of nBA during initial exposure at rest
was 43 mg of nBA, which corresponded to 48% of the dose applied. During
the 3 subsequent exercises of 50, 100 and 150 W the uptake was 80, 130
and 135 mg nBA, i.e. 37, 40 and 41% of
the dose. Arterial blood concentrations in the 100 ppm group increased
from 0.3 mg nBA/l at rest to 0.6, 0.9, and 1.3 mg/l during the
respective exercises. Following initial exposure to 200 ppm, about 80 mg
of nBA (47% of the dose applied) was taken up. The
uptake during the 3 subsequent exposures to 200 ppm with light exercise
was 145 - 160 mg nBA, corresponding to 36 - 39% of the dose. In the 200
ppm group, arterial blood concentrations rose from 0.5 mg nBA /l at
rest, to a plateau of 1.1 mg/l.
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