Isoprene 300ppb on B-Caryo SOA Seed VOC/NOx 1 04.07.2008.

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Presentation transcript:

Isoprene 300ppb on B-Caryo SOA Seed VOC/NOx

Lights on at 09:50 Short DMA is out of service

1 HALO

1.5 HALO

12:20 (2.5 HALO) lights off

During filter flushing

DMPS averaged of filling and lights on (mode has not changed)

~ 1 HALO (isoprene)

High mz 30

There could be a bit of nucleation cpc number is stable and not decreasing anymore

1.75 HALO (nucleation is happening)

2.5 HALO (old mode increased from 217 to 250nm, new mode appeared)

Nucleation + wall losses (mass is not changing much)

3 HALO nucleation stopped at about 2 HALO!

3.3 HALO

Number is flat! Nucleation – wall loss = ZERO!

16:53 Lights off

Too long stopped it at 19:13