Experiment: UCR-CECERT-APL-Cocker Group_20161114_NOx/SOA Surrogate/H2O2_Hydroxyl radical_No Seed_EPA2279B - Weihua

Experiment

Name: UCR-CECERT-APL-Cocker Group_20161114_NOx/SOA Surrogate/H2O2_Hydroxyl radical_No Seed_EPA2279B - Weihua
Date: 2016-11-14

Organization
UCR-CECERT-APL-Cocker Group

Chamber
EPA chamber

Experiment Set
Weihua Li Experiments

Goals
Diesel photo-oxidation under NOx and SOA surrogate

Summary
Target: 1.1ppmC SOA surrogate, 25ppb NOx, 150ul Diesel(A)+1ppmC H2O2(both) INSTRUMENTS: SMPS, GC1, AMS, VTDMA

Experiment Details

Categories:

  • Photolysis, any phase
  • Blank/Control
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  
2918 SMPS EPA2279B_SMPS.csv
2919 Ozone Box EPA2279B_O3.csv
2920 NOx Box EPA2279B_NOx.csv
2921 SMPS - SizeD EPA2279B_SizeD.csv
2922 TC EPA2279B_Temperature.csv

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

Experiment Set Details

Name: Weihua Li Experiments
Time format and units: Time format in timeline is the absolute local time.
Description:
Previous student experiments -- Weihua Li

Collaborators:

  • Weihua Li

Download

Download this Experiment (75.47 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
NOx
  • NOx
 25 Parts Per Billion
SOA Surrogate 1.1 Parts Per Million
H2O2 1 Parts Per Million

20161114_EPA2279_TimeLine.csv Timeline

Time (America/Los_Angeles) Action
6:36 NO span starts; flow 2|20|off|35
6:54 NO 71.78; NOx 72.75; CO 16.26; GPT span starts; flow 2|20|0.7|35
7:09 NO 51.76; NOx 75.2; CO 16.65 O3 span starts; flow 2|20|0.7|off
7:09 Fill air off; Air Handlers on; Heaters on; Chiller #1 on
7:09 Inject 100 uL PFH into both bags
7:11 Inject NO 8.612 - 0.022 torr (253 cc) to both bags
7:11 Inject NO2 5.184 - 0.021 torr (253 cc) to both bags
7:14 Inject 66 uL liquid surrogate into both bags
7:24 O3 34.67; Starting E--W--Z sampling
7:25 Inject 15 uL acetaldehyde into both bags
7:26 Inject gas phase surrogate @ 500 cc/min into both bags for 4:42 mins
7:38 Inject 400 uL H2O2 into both bags
7:59 Mix W-E bag for 8 mins
8:08 Close valve 14
8:09 Inject 150 uL diesel into W bag @ 40 V for 1 hr
9:09 Internally mix W bag for 1 min
9:24 Heaters off; Blacklights on
9:26 Elevators on (0.015'' (W); 0.0165'' (E))
15:26 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: