CO-CIMS

February 2017 Colorado Front Range ToF-CIMS & Related Techniques Users Meeting

• This meeting took place at CU on 15 Feb 2017.
• The schedule is here

• Introduction
  • Jose L. Jimenez: Intro, format, and any related discussions about this meeting
  • Harald Stark Update on annual Aerodyne ToF-CIMS and other users meetings
• High-Resolution Peak Fitting Issues
  • Andy Neuman: Reasons for embracing negative peaks. I'll show examples of bias introduced by not allowing negative peaks, and discuss how to best measure compounds with mixing ratios that often approach zero
  • Ryan Fulgham: Harald's tools for peak fitting by functional group (no presentation)
  • Harald Stark: Data analysis Q&A (no presentation)
• Background signals and related topics
  • Matt Coggon: Post-Tofware Data Processing - Background Correction Procedures
  • Demetrios Pagonis: Tubing delay analysis
  • Ellie Browne: discussion on reducing backgrounds (no presentation)
• Calibrations
  • Jordan Krechmer: CIMS calibration: transmission curve and voltage scanning
  • Bin Yuan: Liquid Calibration Unit (LCU)
  • Ion Chemistry, IMR and related topics
  • Andy Neuman: Possible matrix effects with iodide ion chemistry. I'll show how the response to calibrations can depend on the background air composition.
  • Michael Link: How competitive are the rates of thermally enhanced processes and wall to gas partitioning with particle to gas partitioning using the "Aerosol CIMS" measurement technique?
  • Patrick Veres: IMR redesign tests and results
• Applications
  • Carsten Warneke: Intercomparison of I-CIMS and H3O+CIMS during FIREX Firelab
  • Harald Stark: Ambient amine measurements using protonated ethanol CIMS
  • KANAKO SEKIMOTO: PMF analysis of Firelab data
  • Aroob Abdelhamid + Jennifer Berry: Applications of the APi-ToF
  • Patrick Veres: HCl and ClNO2 observations in Boulder via TOF CIMS and Picarro CRD