Experiment: UCR-CECERT-APL-Cocker Group_20161018_SOA surrogate/NOx/H2O2/M-XYLENE_Hydroxyl radical_No Seed_EPA2266A - Weihan

Experiment

Name: UCR-CECERT-APL-Cocker Group_20161018_SOA surrogate/NOx/H2O2/M-XYLENE_Hydroxyl radical_No Seed_EPA2266A - Weihan
Date: 2016-10-18

Organization
UCR-CECERT-APL-Cocker Group

Chamber
EPA chamber

Experiment Set
VOC-Surrogate Experiments

Goals
Observing OH-initiated m-xylene reactions under SOA surrogate and NOx environment.

Summary
targets: 1.1 ppmC SOA surrogate + 1 ppmc H2O2 + 25 ppb Nox + 100 ppb m-xylene(A) INSTRUMENTS: GC1, SIFT, SMPS,VTDMA, HTDMA, AMS

Experiment Details

Categories:

  • Photolysis, any phase
Temperature: 28
Relative Humidity: 0.01
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0.01
Reaction type:
Oxidant Name: Hydroxyl radical
Initial Oxidant Concentration Value: N/A (molecules_per_cubic_centimeter)
RO2 Main Fate: NO
RO2 Lifetime: (Seconds)
Pressure: 0.015'' H2O

Data Sets

ID Instrument File  
2388 GC-FID EPA2266A_GC.csv
2398 SMPS EPA2266A_SMPS.csv
2399 HTDMA EPA2266A_HTDMA.csv
2400 VTDMA EPA2266A_VTDMA.csv
2401 TC EPA2266A_Temperature.csv
2402 SMPS - SizeD EPA2266A_SizeD.csv
2403 NOx Box EPA2266A_NOx.csv
2404 Ozone Box EPA2266A_O3.csv

Data Set plots
Choose a file: Choose the X-Axis:

Experiment Set Details

Name: VOC-Surrogate Experiments
Time format and units: Time format in timeline is the absolute local time.
Description:
Experiments involved with SOA surrogates.

Collaborators:

  • Weihan Peng
  • Weihua Li
  • Mary Kacarab

Download

Download this Experiment (103.18 KB)

Contacts

Principal investigator:

David Cocker
E-mail: dcocker@engr.ucr.edu


Data Manager:

Chen Le
Phone: 9516603455
E-mail: cle030@ucr.edu

Reactants

Reactant Compound type Concentration Concentration units
SOA surrogate 1.1 Parts Per Million
NOx
  • NOx
 25 Parts Per Billion
H2O2 1 Parts Per Million
M-XYLENE
  • Aromatic
 100 Parts Per Billion

20161018_EPA 2266 1.1 ppmC SOA surrogate + 1 ppm H2O2 + 25 NOx + 100 ppb m-xylene (A)_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
7:55 Start NO|CO span flows 2.0 | 20 | 35.0 | off
8:16 Tecoxx2 NO 71.8 NOx 72.3 CO 16.28
8:17 Start GPT span flows 2.0 | 20 | 35.0 | 0.7
8:18 Fill air off - heaters on - air handlers on
8:19 Inject 400 uL H2O2 into both bags @60C
8:33 Tecoxx2 NO 80.3 NOx 71.3 CO 16.22
8:34 Start O3 span flows 2.0 | 20.0 | off | 0.7
8:49 Inject NO 8.461-0.032 Torr (253cc) into both bags
8:49 Inject NO2 3.341-0.032 Torr (370cc) into both bags
8:52 Inject 66uL liquid SOA surrogate into both bags
8:56 Inject 100 uL PFB into both bags
8:59 Inject 15 uL acetaldehyde into both bags
9:00 O3xx2 34.67
9:00 Start E--W--Z sampling
9:10 Inject gas SOA surrogate into both bags @ 500 cc/min for 4:30 minutes
9:16 Mix W-E bags for 10 minutes
9:27 Close valve 14
9:37 Inject 40 uL m-xylene into west bag
9:52 Internally mix west bag for 1 min
10:00 BLs on heaters off
10:05 Elevators on (Delta P=0.0165")
16:43 End of experiment

Citations
Cite this experiment:

Characterizations
Light Flux Characterizations:
(None)
Particle Loss Characterizations:
(None)
Vapor Loss Characterizations:
(None)

Chamber Details

Name: EPA chamber
Volume in cubic meters: 84.2
Shape: Rectangular Prism
Surface area in cubic meters: 126
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 2
Replacement date: 2017-11-07
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on Oxidation Wipe with ultra-pure water if needed
o3 background: 10
nox background: 0
Particle background in micrograms per cubic meter: 0
Air filtration method: The chamber is using zero air from our air purification system
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 5
Temparature range (max degrees celcius): 45
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 0.01
Relative humidity range (max percent): 80
Particle experiment capability: 1
Lights: Yes
Light source type(s): 350nm UVA Black Lamps
Supplemental information:
Additional Notes: