Table 3 Time to peak and estimated elimination half-lives after peak excretion for the individual markers.

From: Renal excretion of 1,2-dihydroxynaphthalene (DHN) in firefighting instructors after exposure to polycyclic aromatic hydrocarbons (PAHs) during live fire training

Parameter

Time to peak, median (h)

Time to peak, range (h)

Estimated half-life, mean (h)

Estimated half-life, 95% CI (h)

DHN

3.3

2.5–19.0

6.6

5.4–8.6

1-NAP

3.3

2.2–11.2

6.2

5.1–7.8

2-NAP

3.3

2.2–11.2

5.2

4.4–6.3

1-PYR

5.3

2.5–13.9

7.7

5.9–11.1

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