Experiment: Ziemann_20160414_pyrocatechol/Dinitrogen pentoxide_Nitrate radical_Dioctyl Sebacate_Catechol + NO3_1


Name: Ziemann_20160414_pyrocatechol/Dinitrogen pentoxide_Nitrate radical_Dioctyl Sebacate_Catechol + NO3_1
Date: 2016-04-14


Janet (Chamber 1)

Experiment Set
Catechol Reactions

Determine the SOA yield, products and molar yield of SOA products for the reaction of catechol with NO3.

Reaction occurred in immediately, was conducted in the dark, reacting 124 ppb of catechol. SOA mass yield was 161%, 4-nitrocatechol yield was 95%.

Additional Notes
Experiment was conducted in Roger (Chamber 2).

Experiment Details


  • Gas phase chemical reaction
  • Aerosol formation
Temperature: 23
Relative Humidity: 1
Seeded Experiment: Yes
Type of Seed: Dioctyl Sebacate
Initial Seed Concentration Value: 108.6
Seed Concentration Units: micrograms_per_cubic_meter
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 1
Reaction type:
Oxidant Name: Nitrate radical
Initial Oxidant Concentration Value: 20 (parts_per_billion)
RO2 Main Fate: NO3
RO2 Lifetime: (Seconds)
Pressure: 630 Torr

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

Experiment Set Details

Name: Catechol Reactions
Time format and units: Time is defined as (hh:mm) local time.
Catechol was reacted with OH and NO3 radicals in the presence of NOx to investigate SOA formation of a biomass burning VOC under daytime and night time conditions, respectively. Reactions were conducted in the presence of NOx to simulate biomass burning conditions.



Principal investigator:

Paul J Ziemann
Phone: 3034929654
E-mail: paul.ziemann@colorado.edu
OrcID: 0000-0001-7419-0044

Data Manager:

Marla DeVault
E-mail: marla.devault@colorado.edu


Reactant Compound type Concentration Concentration units
pyrocatechol (289)
  • Aromatic
  • Diol
  • phenol
193 Parts Per Billion
Dinitrogen pentoxide (66242) 320 Parts Per Billion

Catechol_041416.csv Timeline

Time (HH:MM) Event Description
9:00 Test

Light Flux Characterizations:
Particle Loss Characterizations:
Vapor Loss Characterizations:

Chamber Details

Name: Janet (Chamber 1)
Volume in cubic meters: 8
Shape: Rectangular Prism
Surface area in cubic meters: 24
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness:
Replacement date:
Replacement frequency: As needed
Cleaning method: Flushing with air
o3 background:
nox background: 1 ppb
Particle background in micrograms per cubic meter: 10 cm-3
Air filtration method: Two Aadco 737-14 Clean air generators supply low VOC (<5 ppb), low NOx (<5 ppb) dry (RH < 1%) air
Mixing method: 1
Mixing method material: Teflon-coated fan
Temparature Control: No
Temparature measurements recorded: No
Temparature range (min degrees celcius):
Temparature range (max degrees celcius):
Humidity Control: No
Humidity Measurements Recorded: Yes
Relative humidity range (min percent):
Relative humidity range (max percent):
Particle experiment capability: 1
Lights: Yes
Light source type(s): UVA Black Lamps
Supplemental information:
Additional Notes: