2
0 50 100 150 200 250 300 350 400 450 0
1 2 3 4 5 6 7 8 9
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
4 5 Figure S1b
0 50 100 150 200 250 300 350 400 450
0 1 2 3 4 5 6 7 8 9
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
6 7 8 9 10 11 12 13 14 15 16 17 18
0 50 100 150 200 250 300 350 400 450 0
1 2 3 4 5 6 7 8 9
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
20 21
thermal protocol with a maximum temperature in He of 650 °C (a), He-750 (b) and He-850 (c) protocols. The LAC-only samples were generated, as a mixture of pyrolysed organic carbon and native EC, by thermal treatment of PM2.5 ambient aerosol samples according to the method proposed by Yu and Li (19).
23 24 25 26
0 200 400 600 800 1000 1200 1400 0
1 2 3 4 5 6 7 8 9 10
Time (sec)
FID Response; Temperaute (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
28
29 Figure S2b
0 200 400 600 800 1000 1200 1400
0 1 2 3 4 5 6 7 8 9 10
Time (sec)
FID Response;Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
30
0 200 400 600 800 1000 1200 1400 0
5 10 15 20 25
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
32 33
Figure S3.1a
0 100 200 300 400 500 600 700 800 900 1000
0 1 2 3 4 5 6 7 8 9 10
Time (sec) FID Response; Temperature (degree) FID*100 (ug/cm2)
Temp/100 laser/1000
He/O2 He
Figure S3.1b
0 100 200 300 400 500 600 700 800 900 1000
0 1 2 3 4 5 6 7 8 9
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
0 100 200 300 400 500 600 700 800 900 1000 0
2 4 6 8 10 12 14 16 18
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2
Figure S3.2b
0 100 200 300 400 500 600 700 800 900 1000
0 2 4 6 8 10 12
Time (sec)
FID Response; Temperature (degree)
FID*100 (ug/cm2) Temp/100 laser/1000
He He/O2