Experiment: NCAR_20050224_ETHYL FORMATE_Chlorine radical_No Seed_Cl2 / Ethyl formate photoxidation, 298 K, 300 Torr O2

Experiment

Name: NCAR_20050224_ETHYL FORMATE_Chlorine radical_No Seed_Cl2 / Ethyl formate photoxidation, 298 K, 300 Torr O2
Date: 2005-02-24

Organization
NCAR

Chamber
NCAR First Floor Stainless Steel

Experiment Set
Ethyl formate Oxidation versus Temperature and O2 Partial Pressure

Goals
Determine products of ethyl formate oxidation in the atmosphere. Specifically, investigate atmospheric fate of HC(O)OCH(O.)CH3 radical.

Summary
Photolyze Cl2/ethyl formate/O2 /N2 mixture. Follow loss of ethyl formate and formation of products via FTIR

Additional Notes
700 Torr O2, 298 K

Experiment Details

Categories:

  • Gas phase chemical reaction
Temperature: 25
Relative Humidity: 0
Seeded Experiment: No
Fuchs Adjusted Surface Area:
Condensation sink rate coefficient: 0
Reaction type:
Oxidant Name: Chlorine radical
Initial Oxidant Concentration Value: 158 (Cl2 Concentration) (parts_per_million)
RO2 Main Fate: Not Sure
RO2 Lifetime: (Seconds)
Pressure: 760 Torr

Data Sets

ID Instrument File  
123 FTIR Esters5.csv

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

Experiment Set Details

Name: Ethyl formate Oxidation versus Temperature and O2 Partial Pressure
Time format and units:
Description:
Ethyl formate Oxidation versus Temperature and O2 Partial Pressure

Collaborators:

Download

Download this Experiment (4.15 KB)

Contacts

Principal investigator:

John Orlando
Phone: 303 497 1486
E-mail: orlando@ucar.edu


Data Manager:

Geoff Tyndall
Phone: 303 497 1472
E-mail: tyndall@ucar.edu

Reactant

Reactant Compound type Concentration Concentration units
ETHYL FORMATE (8025)
  • Ester
 8.77 Parts Per Million

timeline_esters5.csv Timeline

Time_UTC Event Description
17:30 started DOS injection , 30 minute injection = 150 ug/m3
18:18 injected VOC (50 ul C6, 40 ul C8, 25 uL C9, 18 uL C10) (fan on 1 min)
18:24 injected 26 Torr (2 L bulb) NO, Fan on 1 min
18:30 Injected 27 Torr MeNO2 ,Fan on 1 min
18:34 started UV cycle
20:06 started flush cycle to clean bag (experiment end)

Citations
Cite this experiment:

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

Chamber Details

Name: NCAR First Floor Stainless Steel
Volume in cubic meters: 0.047
Shape:
Surface area in cubic meters: 1.15
Flow Mode: Batch
Flow through rate in liters per minute:
Body Material: Stainless Steel
Body thickness:
Replacement date:
Replacement frequency:
Cleaning method: evacuation
o3 background: 0
nox background:
Particle background in micrograms per cubic meter:
Air filtration method:
Mixing method: 0
Mixing method material:
Temparature Control: Yes
Temparature measurements recorded: Yes
Temparature range (min degrees celcius): -50
Temparature range (max degrees celcius): 70
Humidity Control: No
Humidity Measurements Recorded: No
Relative humidity range (min percent):
Relative humidity range (max percent):
Particle experiment capability: 0
Lights: Yes
Light source type(s): Xenon Arc Lamps
Supplemental information:
Additional Notes: