Journal article
Hydroxycarboxylic Acid-Derived Organosulfates: Synthesis, Stability, and Quantification in Ambient Aerosol
Environmental science & technology, Vol.45(15), pp.6468-6474
08/01/2011
DOI: 10.1021/es201039p
PMID: 21682266
Abstract
Organosulfates have been proposed as contributors to aerosol growth and have been detected in both chamber and atmospheric aerosol samples. We present a simple method for the synthesis of quantitative analytical standards of two small hydroxycarboxylic acid-derived organosulfates, glycolic and lactic acid sulfate. Additionally, we discuss the stability of hydroxycarboxylic acid-derived organosulfates and their previously proposed sulfate hemiacetal isomers in commonly used solvents for filter extraction. The hydroxycarboxylic acid-derived organosulfates were found to be stable under acidic conditions comparable to those found in ambient aerosol. By using synthesized standards, quantitative organosulfate concentrations were measured from ambient particulate matter (PM2.5) collected in urban locations in the United States, Mexico City, and Pakistan. Lactic acid sulfate and glycolic acid sulfate concentrations ranged 0.4–3.8 ng/m3 and 1.9–11.3 ng/m3, respectively. We propose that glycolic acid sulfate represents an important tracer for atmospheric processes that form organosulfates in ambient particulate matter.
Details
- Title: Subtitle
- Hydroxycarboxylic Acid-Derived Organosulfates: Synthesis, Stability, and Quantification in Ambient Aerosol
- Creators
- Corey N OlsonMelissa M GallowayGe YuCurtis J HedmanMatthew R LockettTehshik YoonElizabeth A StoneLloyd M SmithFrank N Keutsch
- Resource Type
- Journal article
- Publication Details
- Environmental science & technology, Vol.45(15), pp.6468-6474
- Publisher
- American Chemical Society
- DOI
- 10.1021/es201039p
- PMID
- 21682266
- ISSN
- 0013-936X
- eISSN
- 1520-5851
- Language
- English
- Date published
- 08/01/2011
- Academic Unit
- Chemistry; Chemical and Biochemical Engineering
- Record Identifier
- 9983986095102771
Metrics
12 Record Views