Editing Tobacco smoke (section)

=== Tumorigenic agents ===
{{Main|List of cigarette smoke carcinogens}}
{| class="wikitable"
|+ '''Tumorigenic agents in tobacco and tobacco smoke'''
|-
! rowspan="2" | Compounds
! rowspan="2" | In processed tobacco, per gram
! rowspan="2" | In mainstream smoke, per cigarette
! colspan="2" | IARC evaluation of evidence of carcinogenicity
|-
! In laboratory animals
! In humans
|-
| colspan="5" | '''[[Polycyclic aromatic hydrocarbon]]s'''
|-
| [[Benz(a)anthracene]]
| &nbsp;
| 20–70&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Benzo(b)fluoranthene]]
| &nbsp;
| 4–22&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Benzo(j)fluoranthene]]
| &nbsp;
| 6–21&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Benzo(k)fluoranthene]]
| &nbsp;
| 6–12&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Benzo(a)pyrene]]
| 0.1–90&nbsp;ng
| 20–40&nbsp;ng
| sufficient
| probable
|-
| [[Chrysene]]
| &nbsp;
| 40–60&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Dibenz(a,h)anthracene]]
| &nbsp;
| 4&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Dibenzo(a,i)pyrene]]
| &nbsp;
| 1.7–3.2&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Dibenzo(a,l)pyrene]]
| &nbsp;
| present
| sufficient
| &nbsp;
|-
| [[Indeno(1,2,3-c,d)pyrene]]
| &nbsp;
| 4–20&nbsp;ng
| sufficient
| &nbsp;
|-
| [[5-Methylchrysene]]
| &nbsp;
| 0.6&nbsp;ng
| sufficient
| &nbsp;
|-
| colspan="5" | '''[[Aza-arene]]s'''
|-
| [[Quinoline]]
| 1–2 μg
| &nbsp;
| &nbsp;
| &nbsp;
|-
| [[Dibenz(a,h)acridine]]
| &nbsp;
| 0.1&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Dibenz(a,j)acridine]]
| &nbsp;
| 3–10&nbsp;ng
| sufficient
| &nbsp;
|-
| [[7H-Dibenzo(c,g)carbazole]]
| &nbsp;
| 0.7&nbsp;ng
| sufficient
| &nbsp;
|-
| colspan="5" | '''[[N-Nitrosamine]]s'''
|-
| [[N-Nitrosodimethylamine]]
| 0–215&nbsp;ng
| 0.1–180&nbsp;ng
| sufficient
| &nbsp;
|-
| [[N-Nitrosoethylmethylamine]]
| &nbsp;
| 3–13&nbsp;ng
| sufficient
| &nbsp;
|-
| [[N-Nitrosodiethylamine]]
| &nbsp;
| 0–25&nbsp;ng
| sufficient
| &nbsp;
|-
| [[N-Nitrosonornicotine]]
| 0.3–89 μg
| 0.12–3.7 μg
| sufficient
| &nbsp;
|-
| [[NNK|4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone]]
| 0.2–7 μg
| 0.08–0.77 μg
| sufficient
| &nbsp;
|-
| [[N-Nitrosoanabasine]]
| 0.01–1.9 μg
| 0.14–4.6 μg
| limited
| &nbsp;
|-
| [[N-Nitrosomorpholine]]
| 0–690&nbsp;ng
| &nbsp;
| sufficient
| &nbsp;
|-
| colspan="5" | '''[[Aromatic amine]]s'''
|-
| [[2-Toluidine]]
| &nbsp;
| 30–200&nbsp;ng
| sufficient
| inadequate
|-
| [[2-Naphthylamine]]
| &nbsp;
| 1–22&nbsp;ng
| sufficient
| sufficient
|-
| [[4-Aminobiphenyl]]
| &nbsp;
| 2–5&nbsp;ng
| sufficient
| sufficient
|-
| colspan="5" | '''[[Aldehyde]]s'''
|-
| [[Formaldehyde]]
| 1.6–7.4 μg
| 70–100 μg
| sufficient
| &nbsp;
|-
| [[Acetaldehyde]]
| 1.4–7.4 μg
| 18–1400 μg
| sufficient
| &nbsp;
|-
| [[Crotonaldehyde]]
| 0.2–2.4 μg
| 10–20 μg
| &nbsp;
| &nbsp;
|-
| colspan="5" | '''[[Volatile organic compound|Miscellaneous organic compound]]s'''
|-
| [[Benzene]]
| &nbsp;
| 12–48 μg
| sufficient
| sufficient
|-
| [[Acrylonitrile]]
| &nbsp;
| 3.2–15 μg
| sufficient
| limited
|-
| [[1,1-Dimethylhydrazine]]
| 60–147 μg
| &nbsp;
| sufficient
| &nbsp;
|-
| [[2-Nitropropane]]
| &nbsp;
| 0.73–1.21 μg
| sufficient
| &nbsp;
|-
| [[Ethyl carbamate]]
| 310–375&nbsp;ng
| 20–38&nbsp;ng
| sufficient
| &nbsp;
|-
| [[Vinyl chloride]]
| &nbsp;
| 1–16&nbsp;ng
| sufficient
| sufficient
|-
| colspan="5" | '''[[Inorganic compound]]s'''
|-
| [[Hydrazine]]
| 14–51&nbsp;ng
| 24–43&nbsp;ng
| sufficient
| inadequate
|-
| [[Arsenic]]
| 500–900&nbsp;ng
| 40–120&nbsp;ng
| inadequate
| sufficient
|-
| [[Nickel]]
| 2000–6000&nbsp;ng
| 0–600&nbsp;ng
| sufficient
| limited
|-
| [[Chromium]]
| 1000–2000&nbsp;ng
| 4–70&nbsp;ng
| sufficient
| sufficient
|-
| [[Cadmium]]
| 1300–1600&nbsp;ng
| 41–62&nbsp;ng
| sufficient
| limited
|-
| [[Lead]]
| 8–10 μg
| 35–85&nbsp;ng
| sufficient
| inadequate
|-
| [[Polonium-210]]
| 0.2–1.2 pCi
| 0.03–1.0 pCi
| sufficient
| sufficient
|}