Sulfur Isotope Fractionation Analysis of Individual Atmospheric Particles
EMSL Project ID
47910
Abstract
We propose a set of laboratory studies focused on understanding of chemical forms, oxidation states, and isotopic fractionation of sulfur in atmospherically aged particles collected in a number of internationally supported field and laboratory studies where our group has recently participated. Sulfate particles are ubiquitous in atmospheric environment and play a major role in global climate. Sulfur isotope fractionation analysis of bulk aerosol samples is a commonly used approach to apportion sources of sulfates, estimating their emission factors, and unrevealing its atmospheric history. To understand the exact origin and aging of atmospheric sulfate particles, ideally one would need the sulfur isotopic data quantified for individual particles. The NanoSIMS ion-microprobe instrument is a unique analytical technique capable of this measurement. Therefore, we propose targeted experiments focused on the isotope fractionation analysis of sulfur in individual particles collected in model laboratory and field studies. The outcome of this study will be establishment of a much-needed analytical platform and demonstration of its application.Project Details
Project type
Large-Scale EMSL Research
Start Date
2013-10-01
End Date
2014-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Co-Investigator(s)
Team Members