Atmospheric NO2: in situ laser-induced fluorescence detection at parts per trillion mixing ratios

@article{Thornton2000AtmosphericNI,
  title={Atmospheric NO2: in situ laser-induced fluorescence detection at parts per trillion mixing ratios},
  author={Thornton and Wooldridge and Cohen},
  journal={Analytical chemistry},
  year={2000},
  volume={72 3},
  pages={528-39}
}
We describe a time-gated laser-induced fluorescence instrument designed for accurate (+/- 5%, 1 sigma), continuous, autonomous, in situ observations of NO2 with the sensitivity (15 ppt/10 s at S/N = 2) and portability necessary to study NO2 anywhere in the troposphere. The technique is advantageous because it is spectroscopically specific and direct in that it does not require conversion of NO2 into another species (e.g., NO) prior to detection, eliminating a class of potential interferences… CONTINUE READING
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