Chiu, Yueh-HsiuHart, Jaime E.Smith, Thomas J.Hammond, S. KatharineGarshick, EricLaden, Francine2019-09-302009Chiu, Yueh-Hsiu, Jaime Hart, Thomas Smith, S. Katharine Hammond, Eric Garshick, and Francine Laden. 2009. “Nicotine Contamination in Particulate Matter Sampling.” International Journal of Environmental Research and Public Health 6 (2): 601–7. https://doi.org/10.3390/ijerph6020601.1660-46011661-7827http://nrs.harvard.edu/urn-3:HUL.InstRepos:41426753We have addressed potential contamination of PM(2.5) filter samples by nicotine from cigarette smoke. We collected two nicotine samples - one nicotine sampling filter was placed in-line after the collection of PM(2.5) and the other stood alone. The overall correlation between the two nicotine filter levels was 0.99. The nicotine collected on the "stand-alone" filter was slightly greater than that on the "in-line" filter (mean difference = 1.10 mu g/m(3)), but the difference was statistically significant only when PM(2.5) was low (<= 50 mu g/m(3)). It is therefore important to account for personal and secondhand smoke exposure while assessing occupational and environmental PM.en-USJournal Article2019-09-3010.3390/ijerph6020601