Pls specify whether number or mass cocn. are in a question. As for numbers, it is OK to have UFP (ussually defined 3-100 nm) more than the rest of your size ranges.

Manfred

You specifically asked me about the subject, but the research I was involved in focused on non-smoking environments becasue of the people involved. Though I remember that our Greek partner mentioned that in Greece many asthmatics smoke.

Jan: I was amazed about 2-fold higher PM2.5 in "non-smoking rooms" compared to outdoor (with high city traffic). Smoking rooms reached the mg/m³ range.

Also ultrafines travel from the smoking room to the adjacent non-smoking room and increase lung deposited surface area, which was 7-fold higher in "non-smoking rooms" compared to non-smoking venues without a neighboring smoking room.

Even more surprising was, that we were not able to find significant differences related to closed and open door between smoking room and "non-smoking room" during our measurements.

Colleagues from Copenhagen University have published concentrations not so much below as far as I remember, in private homes in Denmark where smoking used to be prevalent, but is much less so than in Eastern Europe today.

ultrafines: http://www.ncbi.nlm.nih.gov/pmc/?term=10.1289/ehp.7562

(Personal Exposure to Ultrafine Particles and Oxidative DNA Damage

Peter S. Vinzents et al. Environ Health Perspect. 2005; 113(11): 1485–1490. doi: 10.1289/ehp.7562)

PM2.5: http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0668.2009.00635.x/abstract;jsessionid=9C0F396A8D217274D70B86199B41A032.d02t03

Jakob, http://www.ncbi.nlm.nih.gov/pmc/?term=10.1289/ehp.7562 is not accessible at present; do you have the title and first author?

The 2nd is an interesting birth cohort studies, but reporting PM2.5 in children's bedrooms (median 12.7 µg/m³, 95.pct. 53.3 µg/m³).

I added the author information by editing my original response but that probably goes unnoticed in ResearchGate whereas I guess that this response will cause an alert to those of you following this question?

Anyway I was not sure exactly what you were looking for: particle counts in rooms adjacent to places where smoking is allowed or just particle counts of similar magnitude? The latter has been observed as indicated by the study in homes by Vinzents et al. I am not aware of other studies measuring in places similar to those in the Vienese studies.

Jakob, thank you for your references. Children's bedrooms in Denmark seem to be less polluted. The problem in Austria, Czech Republic and few other EU countries seem to be partial smoking bans without enforcement because of the influence of the tobacco industry. The highest concentrations of nicotine, PM2.5 and ultrafines we found in smoking rooms with many smokers. Unexpected was the high contamination of the adjacent "non-smoking rooms", both in particle mass (especially PM1) and particle count and lung deposited surface area.