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Inter-comparisons between HR-ToF-AMS and...
Transcript of Inter-comparisons between HR-ToF-AMS and...
5/12/2017
1
Inter-comparisons between HR-ToF-AMS and ACSM
Yele SunInstitute of Atmospheric Physics, CAS
AMS/ACSM Measurements in China (July 2016)
ACSM Datasets
UrbanN=22
Non-urbanN=13
5/12/2017
2
ACTRIS ACSM Inter-comparisons
Reproducibility expanded uncertainties of Q-ACSM concentration measurements (%)
Crenn et al., AMT, 2015
•PM1Composition:─ Organics, sulfate,
nitrate, ammonium, and chloride
ACSM260m
Tower Measurements
─ Time res.: 5min
HR-ToF-AMS
•Gaseous species: ─ CO, SO2, O3
─ Time res.:1min
•CAPS + AE33:
Ground
─ Particle ext (1 s)─ BC (1 min)
•SMPS: ─ Particle number size
distributions (5 min)
5/12/2017
3
150
100c.(µ
g m
-3)
ACSM 59%
ACSM vs. HR-ToF-AMS
150
100
50
0Mas
s C
onc.
(µg
m-3
)100
50
0Mas
s C
onc
HR-ToF-AMS
8% 18%
10% 5%
60%
10% 14% 8%
8%
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013Date & Time
14%
Same InletDefault RIEs except ammonium
160
120
80
g, A
CSM
r2 = 0.98Slope = 0.98
250
200
150
100Con
c. (µ
g m
-3)
Org HR-ToF-AMS ACSM
ACSM vs. HR-ToF-AMS
40
0
Org
16012080400Org, HR-ToF-AMS
100
50
0
Mas
s C
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
50
40
M
r2 = 1Slope = 0.82
60
50
40µg m
-3)
SO4 HR-ToF-AMS ACSM
30
20
10
0
SO4,
ACS
6050403020100SO4, HR-ToF-AMS
40
30
20
10
0
Mas
s C
onc.
(µ
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
5/12/2017
4
40
30
203, AC
SMr2 = 0.99Slope = 1.24 40
30
20onc.
(µg
m-3
)
NO3 HR-ToF-AMS ACSM
ACSM vs. HR-ToF-AMS
20
10
0
NO
3
302520151050NO3, HR-ToF-AMS
20
10
0
Mas
s C
o
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
30
M
r2 = 0.99Slope = 1.2 30
µg m
-3)
NH4 HR-ToF-AMS ACSM
20
10
0
NH
4, AC
S
302520151050NH4, HR-ToF-AMS
20
10
0
Mas
s C
onc.
(µ
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
20
15
10, AC
SM
r2 = 0.97Slope = 0.61 30
20
onc.
(µg
m-3
)
Chl HR-ToF-AMS ACSM
ACSM vs. HR-ToF-AMS
5
0
Chl
302520151050Chl, HR-ToF-AMS
10
0
Mas
s C
o
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
300
250
200SM
r2 = 0.99Slope = 0.99
400
300
µg m
-3)
Total HR-ToF-AMS ACSM
200
150
100
50
0
Tota
l, AC
S
3002001000Total, HR-ToF-AMS
200
100
0
Mas
s C
onc.
(µ
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
5/12/2017
5
1210
8644
, AC
SM
r2 = 0.95Slope = 1.51
12
10
8
6c (µ
g m
-3)
HR-ToF-AMS ACSM
44: ACSM vs. HR-ToF-AMS
420
m/z
4
86420m/z 44, HR-ToF-AMS
0.15
CSM
r2 = 0.58Slope = 1.41
4
2
0
Con
c
11/26/2013 12/01/2013 12/06/2013 12/11/2013Date & Time
0.15
HR-ToF-AMS ACSM
0.10
0.05
0.00
f 44,
AC
0.150.100.050.00f 44, HR-ToF-AMS
0.10
0.05
0.00
f 44
11/26/2013 12/01/2013 12/06/2013 12/11/2013Date & Time
20
15
(µg
m-3
)
HR-ToF-AMS ACSM
12
10
8
6, AC
SM
r2 = 0.97Slope = 0.94
43: ACSM vs. HR-ToF-AMS
0.10
0.08
0.0643
HR-ToF-AMS ACSM
10
5
0
Con
c (
11/26/2013 12/01/2013 12/06/2013 12/11/2013Date & Time
0.10
0.08
0.06ACSM
r2 = 0.19Slope = 0.79
6
4
2
0
m/z
43
12840m/z 43, HR-ToF-AMS
0.04
0.02
0.00
f
11/26/2013 12/01/2013 12/06/2013 12/11/2013Date & Time
0.04
0.02
0.00
f 43,
0.100.080.060.040.020.00f 43, HR-ToF-AMS
5/12/2017
6
0.12ig
nal HR-ToF-AMS
ACSM
AMS vs. ACSM: Mass Spectra
Large overestimation of m/z 44 during clean periods
0.120.100.08C
SM
r2 = 0.51Slope = 1.05
44
0.08
0.04
0.00
Frac
tion
of S
120110100908070605040302010m/z (amu)
Clean
0.08
0.06f Sig
nal HR-ToF-AMS
ACSM
Polluted
0.08
0.06
CSM
r2 = 0.94Slope = 0.99 43
44
29
0.060.040.020.00
MS A
C
0.060.040.020.00MSHR-ToF-AMS
43
55
29
15
0.04
0.02
0.00
Frac
tion
of
120110100908070605040302010m/z (amu)
Polluted0.04
0.02
0.00
MS A
C
0.080.060.040.020.00MSHR-ToF-AMS
55
15
0.08
0.06
of S
igna
l COA
OA Factors: ACSM vs. HR-ToF-AMS
0.08
0.06
ACSM
r2 = 0.92Slope = 0.92
0.04
0.02
0.00
Frac
tion
o
120110100908070605040302010m/z (amu)
200
150µg m
-3)
HR-ToF-AMS ACSM
COA 60
50
40SM
r2 = 0.89Slope = 0.52
0.04
0.02
0.00
MS C
OA,
A
0.080.060.040.020.00MSCOA, HR-ToF-AMS
100
50
0
Mas
s C
onc.
(µ
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
40
30
20
10
0
CO
A, A
C
100806040200COA, HR-ToF-AMS
5/12/2017
7
0.08
0.06
0 04n of
Sig
nal CCOA
0.08
0.06
0.04
S CC
OA,
AC
SM
r2 = 0.91Slope = 0.89
HOA+CCOA
OA Factors: ACSM vs. HR-ToF-AMS
100
80
60
(µg
m-3
)
HR-ToF-AMS ACSM
CCOA100
80
ACSM
r2 = 0.86Slope = 1.46
0.04
0.02
0.00
Frac
tion
120110100908070605040302010m/z (amu)
0.02
0.00
MS
0.080.060.040.020.00MSCCOA, HR-ToF-AMS
HOA+CCOA
60
40
20
0
Mas
s C
onc.
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
60
40
20
0
CC
OA,
A
6040200CCOA, HR-ToF-AMS
0.20
0.15
0 10of S
igna
l OOA
0.20
0.15
0.10
OO
A, A
CSM
r2 = 0.95Slope = 1.2
OA Factors: ACSM vs. HR-ToF-AMS
50
40µg m
-3)
HR-ToF-AMS ACSM
OOA 50
40
30SM
r2 = 0.95Slope = 0.9
0.10
0.05
0.00
Frac
tion
120110100908070605040302010m/z (amu)
0.05
0.00
MS O
0.120.080.040.00MSOOA, HR-ToF-AMS
30
20
10
0
Mas
s C
onc.
(µ
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013
30
20
10
0
OO
A, A
C
50403020100OOA, HR-ToF-AMS
5/12/2017
8
120
80nc
.(µg
m-3
)ACSM 33%
21%
OA Factors: ACSM vs. HR-ToF-AMS
120
80
40
0Mas
s C
onc.
(µg
m-3
)
40
0Mas
s C
on
HR-ToF-AMS 46%
33%
39%
11/26/2013 11/30/2013 12/04/2013 12/08/2013 12/12/2013Date & Time
28%
100
803 )
ACSM AMS
Org
ACSM: Filament 2
80
60
40
20Mas
s C
once
ntra
tion
(µg
m- 3 AMS
R2 = 0.97 (ACSM vs. AMS)
012:00
2016-12-140:00
2016-12-1512:00 0:00
2016-12-1612:00
Date && Time
5/12/2017
9
6
5
4
3
2ncen
tratio
n (µ
g m
-3)
m/z 43
R2 = 0.97
6
5
4
3
2
ACSM
(µg
m-3
)
f(x) = 0.86xR2 = 0.97
1:1 line43
1
0Mas
s C
on
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
0.14
0.12
0.10
0.08Frac
.
f43R2
= 0.22
1
0
A
6543210AMS (µg m-3)
0.14
0.12
0.10
0.08
0 06ACSM
f(x) = 0.86xR2 = 0.22 1:1 line
f43
0.06
0.04
0.02
0.00
Mas
s F
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
0.06
0.04
0.02
0.00
A
0.100.080.060.040.020.00AMS
8
6
4
2once
ntra
tion
(µg
m-3
)
m/z 44
R2 = 0.98
8
6
4
2ACSM
(µg
m-3
)
f(x) = 0.97xR2 = 0.98
1:1 line44
2
0Mas
s C
o
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
0.20
0.15
0.10
ss F
rac.
f44
R2 = 0.35
2
0
86420AMS (µg m-3)
0.20
0.15
0.10
ACSM
f(x) = 1.11xR2 = 0.35
1:1 line
f44
0.05
0.00
Mas
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
0.05
0.00
0.120.080.040.00AMS
5/12/2017
10
0.8
0.6
0.4ce
ntra
tion
(µg
m-3
)
m/z 60
R2 = 0.95
0.2
0.0Mas
s C
on
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
0.016
0.012
rac.
f60
R2 = 0.18
0.008
0.004
0.000
Mas
s Fr
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
8
6
4
2 OA
sign
al (%
)
higher f44 in ACSM ACSM AMS
100
80
60
ratio
n (µ
g m
-3)
ACSM AMS
R2 = 0.97 (ACSM vs. AMS)
Org
Average MS
0120110100908070605040302010
m/z (amus)
40
20
0
Mas
s C
once
ntr
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
5/12/2017
11
10
8
6
4
2
OA
sign
al (%
)
lower f44 in ACSM ACSM AMS
0120110100908070605040302010
m/z (amus)100
80
60
atio
n (µ
g m
-3)
ACSM AMS
R2 = 0.97 (ACSM vs. AMS)
OrgAverage MS
40
20
0
Mas
s C
once
ntra
12:002016-12-14
0:002016-12-15
12:00 0:002016-12-16
12:00
Date && Time
Conclusions
• ACSM NO3 vs. SO4
• ACSM f44triangle plotO/C• ACSM f60• PMF ACSM OA: Split of POA factors• ME2: AMS spectra as constrains
5/12/2017
12
PM1 ACSM vs. PM2.5 ACSM