Physics · Analytical Instrumentation
Which analytical technique is most commonly utilized for high-sensitivity, real-time in situ measurements of ambient atmospheric concentrations of the nitrate radical (NO3•) and dinitrogen pentoxide (N2O5)?
- 1Gas chromatography with electron capture detection
- 2Laser-induced Raman spectroscopy
- 3Cavity ring-down spectroscopy (CRDS)✓
- 4High-resolution mass spectrometry
Correct answer
Cavity ring-down spectroscopy (CRDS)
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