hydrogen peroxide methylhydroperoxide formaldehyde & (peroxyacetic acid) brian g. heikes &...
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Hydrogen PeroxideMethylhydroperoxide
Formaldehyde & (Peroxyacetic Acid)
Brian G. Heikes & Haiwei Shen, URI
Daniel W. O’Sullivan, USNA
Julie A. Snow, Slippery Rock U.
• Tropospheric Ozone• Radical Oxidants: HO, HO2, CH3OO, CH3C(O)OO ?• Carbon Processing:
– HC’s -> CH2O -> CO ; CH2O lifetime and carbon flux through CH2O– CH3OOH or CH2O ; methane world vs nonmethane world– CH3C(O)OOH (HO2 vs NO2) ;
• Extension of Trop-Chem Measurements by Satellite: – CH2O directly– Combined with other compounds and campaigns
• Vertical Transport & Mixing– Tracers, Yes– Working on being quantitative
• Instrument Development & Comparison– H2O2 : URI, CIT & BAE146– CH2O: URI, NCAR & WP3
Our INTEX ObjectivesIn Measuring Title Compounds
Instrument Changes and Comparison
• CH2O – pre-mission, during, & prototype– Simplified FIA system; improved noise– Modified signal processing; noise vs response time– Stability allows for continuous measurements
• Last Five Flights (16-20; 8/6,7,11,13 &14)– 1 minute resolution with continuous sampling– 25 pptv level of detection
• CH2O Relationships with Other Compounds
0 1 2 3 4 5 6 7
0
1
2
3
4
5
6
7
CH2O, ppb (URI)
CH
2O,
pp
b (
NC
AR
) DC-8 Flt06 07/10/04
Major Axis Reg.(All); DottedIntercept = -7.7781 16.4423 Slope = 1.4846 0.016654corr-coef = 0.95706
MatLab Robust Fit; Solidb(robfit) = 58.048m(robfit) = 1.4183
0 1 2 3 4 5 6 7
0
1
2
3
4
5
6
7
CH2O, ppb (URI)
CH
2O,
pp
b (
NC
AR
)
DC-8 Flt19 08/13/04
Major Axis Reg.(All); DottedIntercept = -97.5188 9.0237 Slope = 1.1835 0.01175corr-coef = 0.95563
MatLab Robust Fit; Solidb(robfit) = -54.7793m(robfit) = 1.0647
Direct comparison, URI & NCAR, 10-s Merge Product
red – ascent/descent green – level blue – Xw > 1%
~1.1~1.5
Formaldehyde Robust Fit Regression: NCAR = URI*slope + intercept
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
1.80
6/22/2004 7/2/2004 7/12/2004 7/22/2004 8/1/2004 8/11/2004 8/21/2004
Date of Flight
Slo
pe
-80
-60
-40
-20
0
20
40
60
80
100
120
Inte
rce
pt
m-robust
b-robust
Linear (m-robust)
Formaldehyde Relationships with Parents & Daughter Carbon Monoxide, Ethane, Propane, & Benzene
0 200 4000
1
2
3
4
CO, ppb
CH
2O(U
RI)
, pp
b
DC-8 Flt6 07/10/04
0 5000 100000
1
2
3
4
C2H
6, ppt
CH
2O(U
RI)
, pp
b
0 2000 40000
1
2
3
4
C3H
8, ppt
CH
2O(U
RI)
, pp
b
0 100 2000
1
2
3
4
benzene, ppt
CH
2O(U
RI)
, pp
b0 200 400
-2
0
2
4
6
8
CO, ppb
CH
2O(N
CA
R),
pp
b
0 5000 10000-2
0
2
4
6
8
C2H
6
CH
2O(N
CA
R),
pp
b
0 2000 4000-2
0
2
4
6
8
C3H
8, ppt
CH
2O(N
CA
R),
pp
b
0 100 200-2
0
2
4
6
8
benzene, pptC
H2O
(NC
AR
), p
pb
0 5000
1
2
3
4
C2H
2, ppb
CH
2O(U
RI)
, pp
b
DC-8 Flt6 07/10/04
0 200 4000
1
2
3
4
C2H
4, ppt
CH
2O(U
RI)
, pp
b
0 2000 40000
1
2
3
4
isoprene, ppt
CH
2O(U
RI)
, pp
b
0 50 1000
1
2
3
4
C3H
6, ppt
CH
2O(U
RI)
, pp
b0 500
-2
0
2
4
6
8
C2H
2, ppb
CH
2O(N
CA
R),
pp
b
0 200 400-2
0
2
4
6
8
C2H
4, ppt
CH
2O(N
CA
R),
pp
b
0 2000 4000-2
0
2
4
6
8
isoprene, ppt
CH
2O(N
CA
R),
pp
b
0 50 100-2
0
2
4
6
8
C3H
6, ppt
CH
2O(N
CA
R),
pp
b
Formaldehyde Relationships Continued Ethyne, Ethene, Isoprene, & Propene
0 1000 20000
1
2
3
4
CH3CHO, ppb
CH
2O(U
RI)
, p
pb
DC-8 Flt6 07/10/04
0 5000 100000
1
2
3
4
CH3COCH
3, ppt
CH
2O(U
RI)
, p
pb
0 5000 100000
1
2
3
4
CH3OH, ppt
CH
2O(U
RI)
, p
pb
0 1000 20000
1
2
3
4
CH3OOH, ppt
CH
2O(U
RI)
, p
pb
0 1000 2000-2
0
2
4
6
8
CH3CHO, ppb
CH
2O(N
CA
R),
pp
b
0 5000 10000-2
0
2
4
6
8
CH3COCH
3, ppt
CH
2O(N
CA
R),
pp
b
0 5000 10000-2
0
2
4
6
8
CH3OH, ppt
CH
2O(N
CA
R),
pp
b
0 1000 2000-2
0
2
4
6
8
CH3OOH, ppt
CH
2O(N
CA
R),
pp
b
Formaldehyde … Acetaldehyde, Acetone, Methanol, Methylhydroperoxide
0 50 1000
1
2
3
4
HO2, ppt
CH
2O(U
RI)
, pp
b DC-8 Flt6 07/10/04
0 50 1000
1
2
3
4
O3, ppb
CH
2O(U
RI)
, pp
b
102
104
106
0
1
2
3
4
H2O(proj), ppm
CH
2O(U
RI)
, pp
b
10-2
10-1
100
0
1
2
3
4
HO, ppt
CH
2O(U
RI)
, pp
b0 50 100
-2
0
2
4
6
8
HO2, ppt
CH
2O(N
CA
R),
pp
b
0 50 100-2
0
2
4
6
8
O3, ppb
CH
2O(N
CA
R),
pp
b
102
104
106
-2
0
2
4
6
8
H2O(proj), ppm
CH
2O(N
CA
R),
pp
b
10-2
10-1
100
-2
0
2
4
6
8
HO, pptC
H2O
(NC
AR
), p
pb
Formaldehyde … Perhydroxyl, Ozone, Water, & Hydroxyl
0 2 4
200
400
600
800
1000
P,
hP
a
CH2O(URI), ppb
DC-8 Flt6 07/10/04
0 50 1000
1
2
3
4
RH(water), %
CH
2O(U
RI)
, p
pb
100
102
104
0
1
2
3
4
NO2, ppt
CH
2O(U
RI)
, p
pb
0 1 2
x 104
0
1
2
3
4
SO2, ppt
CH
2O(U
RI)
, p
pb
0 5
200
400
600
800
1000
P,
hP
a
CH2O(NCAR), ppb
0 50 100-2
0
2
4
6
8
RH(water), %
CH
2O(N
CA
R),
pp
b
100
102
104
-2
0
2
4
6
8
NO2, ppt
CH
2O(N
CA
R),
pp
b
0 1 2
x 104
-2
0
2
4
6
8
SO2, ppt
CH
2O(N
CA
R),
pp
b
Formaldehyde vs Pressure, RH, Nitrogen Dioxide, Sulfur Dioxide
Instrument Changes & Comparison
• H2O2 / CH3OOH / CH3C(O)OOH– Initial setup for H2O2 / CH3OOH alone– StL Samples Indicated 3rd ROOH;
PAA on CIT – New HPLC Column online in Portsmouth
• Tests for hydroxymethylhydroperoxide – negative• Tests for peroxyacetic acid – positive
– Modify mode and run times to resolve PAA, PAA is a work in progress (~3 months more)
– Hence, less frequent sampling from NH on.
0 2 4 6 8 10-1
0
1
2
3
4
5
6
7
8
9
10
H2O
2, ppb (URI)
H2O
2, p
pb
(C
alT
ec
h)
DC-8 Flt06 07/10/04
M-A Regression
M-A Regression, <1
Robust Fit
b(robfit) = 0.0m(robfit) = 1.214
0 2 4 6 8 10-1
0
1
2
3
4
5
6
7
8
9
10
H2O
2, ppb (URI)
H2O
2, p
pb
(C
alT
ec
h)
DC-8 Flt19 08/13/04
M-A Regression
M-A Regression, <1
Robust Fitb(robfit) = 0.1
m(robfit) = 0.64912
~1.2
~0.65
URI-CIT Direct Comparison – OUTLIERS – Robust Fit Algorithm (MatLab)
red – ascent/descent green – level blue – Xv < 1%
Hydrogen Peroxide Robust Fit: CIT = URI * slope + intercept
0
0.2
0.4
0.6
0.8
1
1.2
1.4
7/7 7/12 7/17 7/22 7/27 8/1 8/6 8/11 8/16
Flight Date
Slo
pe
0
50
100
150
200
250
Inte
rcep
t
m-robust
b-robust
0 20 400
1
2
3
4
HO2, ppt
H2O
2(UR
I),
pp
b
DC-8 Flt8 07/15/04
0 100 2000
1
2
3
4
O3, ppb
H2O
2(UR
I),
pp
b
100
105
0
1
2
3
4
H2O(proj), ppm
H2O
2(UR
I),
pp
b
10-2
10-1
100
0
1
2
3
4
HO, ppt
H2O
2(UR
I),
pp
b0 20 40
0
1
2
3
4
HO2, ppt
H2O
2(CIT
), p
pb
0 100 2000
1
2
3
4
O3, ppb
H2O
2(CIT
), p
pb
100
105
0
1
2
3
4
H2O(proj), ppm
H2O
2(CIT
), p
pb
10-2
10-1
100
0
1
2
3
4
HO, pptH
2O2(C
IT),
pp
b
Hydrogen Peroxide RelationshipsPerhydroxyl, Ozone, Water, & Hydroxyl
Hydrogen Peroxide … Pressure, RH, Nitrogen Dioxide, Sulfur Dioxide
0 2 4
200
400
600
800
1000
P, h
Pa
H2O
2(URI), ppb
DC-8 Flt8 07/15/04
0 50 1000
1
2
3
4
RH(water), %
H2O
2(UR
I), p
pb
10-5
100
105
0
1
2
3
4
NO2, ppt
H2O
2(UR
I), p
pb
0 1000 20000
1
2
3
4
SO2, ppt
H2O
2(UR
I), p
pb
0 2 4
200
400
600
800
1000
P, h
Pa
H2O
2(CIT), ppb
0 50 1000
1
2
3
4
RH(water), %
H2O
2(CIT
), p
pb
10-5
100
105
0
1
2
3
4
NO2, ppt
H2O
2(CIT
), p
pb
0 1000 20000
1
2
3
4
SO2, ppt
H2O
2(CIT
), p
pb
0 500 10000
1
2
3
4
CH3CHO, ppb
H2O
2(UR
I),
pp
b
DC-8 Flt8 07/15/04
0 5000 100000
1
2
3
4
CH3COCH
3, ppt
H2O
2(UR
I),
pp
b
0 5000 100000
1
2
3
4
CH3OH, ppt
H2O
2(UR
I),
pp
b
0 1000 20000
1
2
3
4
CH3OOH, ppt
H2O
2(UR
I),
pp
b0 500 1000
0
1
2
3
4
CH3CHO, ppb
H2O
2(CIT
), p
pb
0 5000 100000
1
2
3
4
CH3COCH
3, ppt
H2O
2(CIT
), p
pb
0 5000 100000
1
2
3
4
CH3OH, ppt
H2O
2(CIT
), p
pb
0 1000 20000
1
2
3
4
CH3OOH, ppt
H2O
2(CIT
), p
pb
Hydrogen Peroxide … Acetaldehyde, Acetone, Methanol, Methylhydroperoxide
Case Study: August 11, 2004; DC-8 Flight 18
1
2
3
4
56
78
910
New Brunswick Far Off N. Carolina
St Louis Far Off N. Carolina
2040 60 801001200
5
10
Alt
itu
de(
GP
S),
km
O3, ppb
DC-8 Flt18 08/11/04
22040 60 801001200
5
10
O3, ppb
32040 60 801001200
5
10
4
O3, ppb
2040 60 801001200
5
10
5
O3, ppb
20 40 60 801001200
5
10
6
O3, ppb
2040 60 801001200
2
4
6
8
10
12
Alt
itu
de(
GP
S),
km
10
O3, ppb
2040 60 801001200
2
4
6
8
10
12
9
O3, ppb
2040 60 801001200
2
4
6
8
10
12
8
O3, ppb
2040 60 801001200
2
4
6
8
10
12
7
O3, ppb
20 40 60 801001200
2
4
6
8
10
12
6
O3, ppb
New Brunswick Far Off N. Carolina
St Louis Far Off N. Carolina
50 100 1500
5
10
Alt
itu
de(
GP
S),
km
CO, ppb
DC-8 Flt18 08/11/04
250 100 150
0
5
10
CO, ppb
350 100 150
0
5
10
4
CO, ppb50 100 150
0
5
10
5
CO, ppb50 100 150
0
5
10
6
CO, ppb
50 100 1500
5
10
Alt
itu
de(
GP
S),
km
10
CO, ppb50 100 150
0
5
10
9
CO, ppb50 100 150
0
5
10
8
CO, ppb50 100 150
0
5
10
7
CO, ppb50 100 150
0
5
10
6
CO, ppb
0 5000 100000
5
10
Alt
itu
de(
GP
S),
km
CH3OOH (CH
2O or H
2O
2), ppt
DC-8 Flt18 08/11/04
20 5000
0
5
10
CH3OOH (CH
2O or H
2O
2), ppt
30 5000
0
5
10
4
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
5
10
5
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
5
10
6
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
Alt
itu
de(
GP
S),
km
10
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
9
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
8
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
7
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
6
CH3OOH (CH
2O or H
2O
2), ppt
New Brunswick Far Off N. Carolina
St Louis Far Off N. Carolina
grn – H2O2 blk – CH3OOH red – CH2O(URI) mag – CH2O(NCAR)
New Brunswick Far Off N. Carolina
St Louis Far Off N. Carolina
grn – H2O2 blk – CH3OOH red – CH2O(URI) mag – CH2O(NCAR)
0 500 10000
5
10
Alti
tude
(GP
S),
km
CH3OOH (CH
2O or H
2O
2), ppt
DC-8 Flt18 08/11/04
20 500 1000
0
5
10
CH3OOH (CH
2O or H
2O
2), ppt
30 500 1000
0
5
10
4
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
5
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
6
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
Alti
tude
(GP
S),
km
10
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
9
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
8
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
7
CH3OOH (CH
2O or H
2O
2), ppt
0 500 10000
5
10
6
CH3OOH (CH
2O or H
2O
2), ppt
SummaryCH2O Measurements
URI to NCAR comparison factor of 1.1 to 1.6
Highly correlated
Indicate same functional relationships to other compounds
H2O2 Measurements
URI to CIT comparison factor of 0.7 to 1.2
Well correlated with outliers, better when Xv<1%
Indicate same functional relationships to other compounds
Case Study: August 2, 2004; DC-8 Flight 15
1
2
34
56
7 8
910
11
1213
14
0 100 2000
2
4
6
8
10
12
Alt
itu
de
(GP
S),
km
O3, ppb
DC-8 Flt15 08/02/04
30 100 200
0
2
4
6
8
10
12
O3, ppb
40 100 200
0
2
4
6
8
10
12
5
O3, ppb
0 100 2000
2
4
6
8
10
12
6
O3, ppb
0 100 2000
2
4
6
8
10
12
7
O3, ppb
0 100 2000
2
4
6
8
10
12
Alt
itu
de
(GP
S),
km
8
O3, ppb
0 100 2000
2
4
6
8
10
12
14
O3, ppb
0 100 2000
2
4
6
8
10
12
13
O3, ppb
0 100 2000
2
4
6
8
10
12
12
O3, ppb
0 100 2000
2
4
6
8
10
12
11
O3, ppb
0 100 2000
2
4
6
8
10
12
10
O3, ppb
0 100 2000
2
4
6
8
10
12
9
O3, ppb
S. Quebec N. New Foundland
S. Maine S. New Foundland
S. Quebec N. New Foundland
S. Maine S. New Foundland
50 1001500
2
4
6
8
10
12
Alt
itu
de
(GP
S),
km
CO, ppb
DC-8 Flt15 08/02/04
350 100150
0
2
4
6
8
10
12
CO, ppb
450 100150
0
2
4
6
8
10
12
5
CO, ppb50 100150
0
2
4
6
8
10
12
6
CO, ppb50 100150
0
2
4
6
8
10
12
7
CO, ppb50100150
0
2
4
6
8
10
12
Alt
itu
de
(GP
S),
km
8
CO, ppb
50 1001500
2
4
6
8
10
12
14
CO, ppb50 100150
0
2
4
6
8
10
12
13
CO, ppb50 100150
0
2
4
6
8
10
12
12
CO, ppb50 100150
0
2
4
6
8
10
12
11
CO, ppb50 100150
0
2
4
6
8
10
12
10
CO, ppb50100150
0
2
4
6
8
10
12
9
CO, ppb
S. Quebec N. New Foundland
S. Maine S. New Foundland
0 50000
2
4
6
8
10
12
Altitude(G
PS
), k
m
CH3OOH (CH
2O or H
2O
2), ppt
DC-8 Flt15 08/02/04
3
0 50000
2
4
6
8
10
12
CH3OOH (CH
2O or H
2O
2), ppt
4
0 50000
2
4
6
8
10
12
5
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
6
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
7
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
Altitude(G
PS
), k
m
8
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
14
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
13
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
12
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
11
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
10
CH3OOH (CH
2O or H
2O
2), ppt
0 50000
2
4
6
8
10
12
9
CH3OOH (CH
2O or H
2O
2), ppt
grn – H2O2 blk – CH3OOH red – CH2O(URI) mag – CH2O(NCAR)
S. Quebec N. New Foundland
S. Maine S. New Foundland
grn – H2O2 blk – CH3OOH red – CH2O(URI) mag – CH2O(NCAR)
0 50010000
5
10
Alt
itu
de(
GP
S),
km
CH3OOH (CH
2O or H
2O
2), ppt
DC-8 Flt15 08/02/04
30 5001000
0
5
10
CH3OOH (CH
2O or H
2O
2), ppt
40 5001000
0
5
10
5
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
6
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
7
CH3OOH (CH
2O or H
2O
2), ppt
0 50010000
5
10
Alt
itu
de(
GP
S),
km
8
CH3OOH (CH
2O or H
2O
2), ppt
0 50010000
5
10
14
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
13
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
12
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
11
CH3OOH (CH
2O or H
2O
2), ppt0 5001000
0
5
10
10
CH3OOH (CH
2O or H
2O
2), ppt
0 50010000
5
10
9
CH3OOH (CH
2O or H
2O
2), ppt