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Synthesis and Analysis of Organic Hydroperoxide by PTR-MS


EMSL Project ID
3364

Abstract

The aim of this proposal is to synthesize a few select organic
hydroperoxides relevant to atmospheric chemistry and to measure them in the
gas phase by Proton Transfer Reaction Mass Spectrometry. The PTR-MS
measurements will evaluate the mass fragmentation pattern under different
collisional energies and establish the technique's sensitivity using a
Henry's Law calibration device. The goal is to evaluate PTR-MS suitability
for atmospheric measurements of hydroperoxides. What is required is the
synthesis of an aqueous methyl hydroperoxide (CH3OOH) solution at a
concentration of about 0.2-0.5 molar (determined by volumetric titration)
and measurement of the solution vapor by PTR-MS. The methylhydroperoxide
solution purity needs to be known prior to measurement by PTR-MS.

Project Details

Project type
Exploratory Research
Start Date
2003-02-07
End Date
2006-02-12
Status
Closed

Team

Principal Investigator

Thomas Karl
Institution
National Center for Atmospheric Research

Team Members

Bertram Jobson
Institution
Washington State University

Rahul Zaveri
Institution
Pacific Northwest National Laboratory

Timothy Hubler
Institution
Pacific Northwest National Laboratory