Table 4.
Median (range) of daily inhaled metal dose (μg/d) in aerosols with related exposure limits for Mn, Ni, and Pb.
| Value | Mn | Ni | Pb | |
|---|---|---|---|---|
| CD1 | Median (Range) |
3.2×10−4
(6.2×10−6–8.9×10−3) |
6.1×10−4
(4.1×10−5–7.4×10−3) |
2.9×10−3
(8.4×10−5–1.0×10−1) |
| Percent exceeding limit (%) | 0 | 0 | ||
| CD2 | Median (Range) |
8.2×10−5
(6.9×10−6–1.1×10−4) |
2.2×10−3
(1.5×10−3–3.1×10−2) |
1.6×10−4
(9.0×10−5–2.2×10−3) |
| Percent exceeding limit (%) | 0 | 0 | ||
| OD1 | Median (Range) |
3.8×10−2
(2.0×10−2–1.3×10−1) |
1.4 (5.9×10−1–9.11) |
2.2×10−1
(1.3×10−2–1.5) |
| Percent exceeding limit (%) | 0 | 100 | ||
| OD2 | Median (Range) |
2.8×10−1
(9.5×10−2–6.7×10−1) |
9 (1.0×10−1–32) |
2.4 (4.2×10−1–7.8) |
| Percent exceeding limit (%) | 7.4 | 88.9 | ||
| Limits | 0.62 a | 0.14 b | ||
| Reference cigarette 3R4F | 2.1 | 0.59 |
a
MRL for Mn (ATSDR 2012). MRLs are daily averages
b
ATSDR MRL for Ni (ATSDR 2005; U.S. EPA 2000).