A compact broadband cavity enhanced absorption spectrometer for detection of atmospheric NO2 using light emitting diodes

文献情報

出版日 2006-07-04

DOI 10.1039/B605636A

インパクトファクター 4.616

著者

Justin M. Langridge, Stephen M. Ball, Roderic L. Jones

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要旨

A compact and low power detector has been developed for the in situ measurement of atmospheric NO2 using broadband cavity enhanced absorption spectroscopy. Absorption by the O2–O2 collisional pair was used to determine the cavity mirror reflectivity, thus enabling the retrieval of absolute absorber concentrations by differential spectral fitting techniques. Quantitative amounts of ambient NO2 (between 3 and 32 parts per billion) were retrieved from spectra recorded in the presence of ambient aerosol with statistical uncertainties approaching 100 ppt for a 60 s averaging period. The instrument's response was compared to that of a commercial chemiluminescence detector and was found to agree to within 6%.

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CiteScore: 7.8

自己引用率: 5.6%

年間論文数: 653

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.

A compact broadband cavity enhanced absorption spectrometer for detection of atmospheric NO2 using light emitting diodes

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