A Wide Spectral Range Photoacoustic Aerosol Absorption Spectrometer

作者：Haisch C^*; Menzenbach P; Bladt H; Niessner R

来源：Analytical Chemistry, 2012, 84(21): 8941-8945.

DOI：10.1021/ac302194u

A photoacoustic spectrometer for the measurement of aerosol absorption spectra, based on the excitation of a pulsed nanosecond optical parametrical oscillator (OPO), will be introduced. This spectrometer is working at ambient pressure and can be used to detect and characterize different classes of aerosols. The spectrometer features a spectral range of 410 to 2500 nm and a sensitivity of 2.5 x 10(-7) m(-1) at 550 nm. A full characterization of the system in the visible spectral range is demonstrated, and the potential of the system for near IR measurement is discussed. In the example of different kinds of soot particles, assessed. As we demonstrate, it is possible to determine a specific optical absorption spectrometer with an aerosol particle counter. the performance of the spectrometer was per particle by a combination of the new

• 出版日期2012-11-6