A critical review of advanced analytical techniques for water-soluble organic matter from atmospheric aerosols

作者：Duarte Regina M B O^*; Duarte Armando C

来源：TrAC-Trends in Analytical Chemistry, 2011, 30(10): 1659-1671.

DOI：10.1016/j.trac.2011.04.020

• Air particle
• Atmospheric aerosol
• Chemical structure
• Climate system
• High-resolution mass spectrometry
• Infrared spectroscopy
• Nuclear magnetic resonance spectroscopy
• Real-time field instrumentation
• Structural composition
• Water-soluble organic matter

Water-soluble organic matter (WSOM) from air particles plays a potentially important role in the climate system, yet little is known about its molecular composition and physico-chemical properties. During the past decade, the rapidly-evolving field of analytical instrumentation has produced sophisticated tools capable of providing molecular level information on this organic-aerosol fraction.
This article presents a critical review of the major applications of these advanced analytical methods in WSOM analysis. We emphasize off-line methods relying on nuclear magnetic resonance and infrared spectroscopies, and high-resolution mass spectrometry. We also discuss the most prominent analytical methods for near real-time measurements of particulate WSOM. We address the limitations of advanced off-line and on-line instrumental techniques, and, finally, outline the major challenges ahead to improve the current knowledge on the chemical structures of aerosol WSOM.

• 出版日期2011-11