Experiment: Ng Research Group_20220706_alpha-Pinene_Nitrate radical_Ammonium sulfate_APN-1

Experiment

Name: Ng Research Group_20220706_alpha-Pinene_Nitrate radical_Ammonium sulfate_APN-1
Date: 2022-07-06

Organization
Ng Research Group

Chamber
Georgia Tech Environmental Chamber (Far)

Experiment Set
MultiPrecursor_Takeuchi

Goals
To derive an SOA mass yield curve for a-pinene+NO3 system.

Summary
2 uL of liquid a-pinene was injected, followed by the injection of 100 ppb of N2O5 (source of nitrate radical) at a rate of 11.3 ppb min-1.

Additional Notes
Initial oxidant concentration is the injected N2O5 concentration.

Experiment Details

Categories:

  • Gas phase chemical reaction
  • Condensed-phase chemical reaction
  • Volatility and partitioning
  • Aerosol formation
Temperature: 5
Relative Humidity: 0-2
Seeded Experiment: Yes
Type of Seed: Ammonium sulfate
Initial Seed Concentration Value:
Seed Concentration Units:
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0-2
Reaction type:
Oxidant Name: Nitrate radical
Initial Oxidant Concentration Value: 100 (parts_per_billion)
RO2 Main Fate: Not Sure
RO2 Lifetime: (Seconds)
Pressure:

Data Sets

ID Instrument File  
4177 SMPS (Far, number) 20220706_SMPS_Number.csv
4178 O3 monitor (far) 20220706_O3_time.csv
4179 CAPS NO2 monitor (far) 20220706_NO2_time.csv
4180 Thermo NOx (far) 20220706_NO_time.csv
4181 SMPS (Far, volume) 20220706_SMPS_Volume.csv

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

Experiment Set Details

Name: MultiPrecursor_Takeuchi
Time format and units: Time is either ET or in min.
Description:
To understand whether or not the formation and properties of secondary organic aerosol (SOA) in multi-precursor systems can be described linearly using respective single-precursor systems. The system to investigate is nitrate radical oxidation of a-pinene and limonene.

Collaborators:

Download

Download this Experiment (71.65 KB)

Contacts

Principal investigator:

Nga (Sally) Lee Ng
E-mail: ng@chbe.gatech.edu
OrcID: 0000-0001-8460-4765

Data Manager:

Taekyu Joo
Phone: (404) 385-2149
E-mail: tjoo6@gatech.edu

Reactant

Reactant Compound type Concentration Concentration units
alpha-Pinene (6654)
  • Alkene
 135.1 Microgram Per Cubic Meter

20220706_TimeLine.csv Timeline

Time (ET) Action
9:30 GC on
10:30 SMPS on
11:10 AMS on filter
11:30 AMS on chamber
11:30 RHT/NOx/O3 on
11:50 Seed injection starts
11:55 VOC injection starts
12:00 FIGAERO-CIMS on
12:05 VOC injection ends
12:20 Seed injection ends
13:30 N2O5 injection starts
13:38:50 N2O5 injection ends
14:15 GC off
18:30 RHT/NOx/O3 off
18:30 SMPS off
18:30 AMS off
19:00 FIGAERO-CIMS off

Citations
Cite this experiment: Publication associated with this experiment:

Characterizations
Light Flux Characterizations:
(None)
Particle Loss Characterizations:
2022-06-30 (#36)
Vapor Loss Characterizations:
(None)

Chamber Details

Name: Georgia Tech Environmental Chamber (Far)
Volume in cubic meters: 12.6
Shape:
Surface area in cubic meters: 32.48865
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness:
Replacement date: 2017-02-07
Replacement frequency: As needed
Cleaning method: Flushing with air Flushing with air with UV lights on
o3 background: 3
nox background: 1
Particle background in micrograms per cubic meter:
Air filtration method: Pure air generator with membrane filter dryer
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 4
Temparature range (max degrees celcius): 40
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 2
Relative humidity range (max percent): 70
Particle experiment capability: 1
Lights: Yes
Light source type(s): UVA Black Lamps, Natural Sunlight
Supplemental information:
Additional Notes: