PMID- 21141815 OWN - NLM STAT- MEDLINE DCOM- 20110225 LR - 20151119 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 45 IP - 1 DP - 2011 Jan 1 TI - Thirdhand smoke: heterogeneous oxidation of nicotine and secondary aerosol formation in the indoor environment. PG - 328-33 LID - 10.1021/es102060v [doi] AB - Tobacco smoking is well-known as a significant source of primary indoor air pollutants. However, only recently has thirdhand smoke (THS) been recognized as a contributor to indoor pollution due to the role of indoor surfaces. Here, the effects of relative humidity (<10% RH and approximately 45% RH) and substrate (cellulose, cotton, and paper) on secondary organic aerosol (SOA) formation from nicotine-ozone-NO(x) reactions are discussed. SOA formation from the sorbed nicotine-ozone reaction ([O(3)] = 55 ppb) varied in size distribution and number, depending on RH and substrate type, indicating the role of substrate and water interactions in SOA formation. This led to SOA yields from cellulose sorbed nicotine-ozone reaction of approximately 1 and 2% for wet and dry conditions, respectively. SOA formation from nicotine-NO(x) reactions was not distinguishable from background levels. Simultaneously, cellulose sorbed nicotine-ozone reaction kinetics ([O(3)] = 55 ppb) were obtained and revealed pseudofirst-order surface rate constants of k(1) = (1 +/- 0. 5) x 10(-3) and k(1) < 10(-4) min(-1) under <10% and approximately 45% RH, respectively. Given the toxicity of some of the identified products and that small particles may contribute to adverse health effects, the present study indicates that exposure to THS ozonation products may pose additional health risks. FAU - Petrick, Lauren M AU - Petrick LM AD - Faculty of Civil and Environmental Engineering, Technion - Israel Institute of Technology, Haifa, Israel. FAU - Svidovsky, Alona AU - Svidovsky A FAU - Dubowski, Yael AU - Dubowski Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20101208 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Aerosols) RN - 0 (Air Pollutants) RN - 0 (Tobacco Smoke Pollution) RN - 6M3C89ZY6R (Nicotine) SB - IM MH - Aerosols/*analysis/chemistry MH - Air Pollutants/*analysis/chemistry MH - Air Pollution, Indoor/*analysis MH - Environmental Monitoring MH - Humidity MH - Kinetics MH - Nicotine/*analysis/chemistry MH - Oxidation-Reduction MH - Surface Properties MH - Tobacco Smoke Pollution/*analysis EDAT- 2010/12/15 06:00 MHDA- 2011/02/26 06:00 CRDT- 2010/12/15 06:00 PHST- 2010/12/15 06:00 [entrez] PHST- 2010/12/15 06:00 [pubmed] PHST- 2011/02/26 06:00 [medline] AID - 10.1021/es102060v [doi] PST - ppublish SO - Environ Sci Technol. 2011 Jan 1;45(1):328-33. doi: 10.1021/es102060v. Epub 2010 Dec 8.