Experiment: Caltech Atmospheric Chamber_20170607_No Reactant_None_No Seed_170607_85_isop


Name: Caltech Atmospheric Chamber_20170607_No Reactant_None_No Seed_170607_85_isop
Date: 2017-06-07

Caltech Atmospheric Chamber

Near Bag 2014

Experiment Set
Vapor-wall Loss

Investigate vapor-wall loss rates of isoprene, MACR, and MVK at RH = 85%

Obtained temporal profiles of three compounds with GC-FID

Additional Notes
The experiments are designed to study the behavior of vapor in the Teflon-walled chamber in the long term, so the timeline just lists the measurement starting time. For some experiments, the VOC injection is still happening while the measurement is going on.

Experiment Details


  • Volatility and partitioning
Temperature: 25
Relative Humidity: 5
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 5
Reaction type:
Oxidant Name: None
Initial Oxidant Concentration Value: 0 (parts_per_billion)
RO2 Main Fate: Not Sure
RO2 Lifetime: (Seconds)
Pressure: 750 Torr

Data Sets

ID Instrument File  
798 GC - FID 170607.csv

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

Experiment Set Details

Name: Vapor-wall Loss
Time format and units:
Investigate vapor-wall loss rates of 21 compounds in the long Teflon-walled chamber running time with GC-FID under dry (RH = 5%), mediate (RH = 50%), and wet (RH = 85%) conditions.


  • Yuanlong Huang


Principal investigator:

John H Seinfeld
Phone: (626) 395-4635
E-mail: seinfeld@caltech.edu
OrcID: https://orcid.org/0000-0003-1344-4068

Data Manager:

Stephanie Kong
Phone: 626-395-3194
E-mail: wkong@caltech.edu

170607time.csv Timeline

08:34 Measurement started

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

Chamber Details

Name: Near Bag 2014
Volume in cubic meters: 27
Shape: Rectangular Prism
Surface area in cubic meters: 41.8
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Teflon
Body thickness: 50
Replacement date:
Replacement frequency: As needed
Cleaning method: Flushing with air
o3 background:
nox background: 0.1
Particle background in micrograms per cubic meter: 0
Air filtration method: Custom Filter
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): 20
Temparature range (max degrees celcius): 45
Humidity Control: Yes
Humidity Measurements Recorded: Yes
Relative humidity range (min percent): 5
Relative humidity range (max percent): 100
Particle experiment capability: 1
Lights: Yes
Light source type(s): UVA Black Lamps
Supplemental information: https://www.worldscientific.com/doi/abs/10.1142/9789813147355_0001
Additional Notes: