Meso: Exp 15Figs1-Exp6

5ppb Limonene and 20ppb O316.07.2009

08:49 SMPS sampling from chamber housing

09:00 half way through pre-exp

09:05 end of a fillnote the similar distribution following the spike to that of the

chamber housing on slide 2

09:20 pre-exp

09:30 the spikes in number happen at the very end of flushes (a few sec before the valve turn to fill. i.e the are more likely to be leak from

outside due to bag being under slight vacuum)

09:40 started filling from PCkept the bag under positive pressure during the final flush

and managed to reduce the size of the spike!

11:30 fill complete

11:56 supposdely 4.5ppb Limonene went in but the PTR didn’t see any of it! Nucleation occurred a few minutes after injection despite NOT

having any O3 or lights on!!

12:00 Lights on and O3 in

26min ALo – a small increase in number is observed indicating “limited” or “suppressed”

nucleation

54min ALO

2h 20min ALO (mode 24nm)

3h15min ALO (mode 26nm)

16:03 Lights off

16:27 sampling chamber housing air