Tunable Diode Laser Atomic Absorption Spectroscopy for Detection of Potassium under Optically Thick Conditions.

@article{Qu2016TunableDL,
  title={Tunable Diode Laser Atomic Absorption Spectroscopy for Detection of Potassium under Optically Thick Conditions.},
  author={Zhechao Qu and Erik Steinvall and Ramin Ghorbani and Florian M. Schmidt},
  journal={Analytical chemistry},
  year={2016},
  volume={88 7},
  pages={3754-60}
}
Potassium (K) is an important element related to ash and fine-particle formation in biomass combustion processes. In situ measurements of gaseous atomic potassium, K(g), using robust optical absorption techniques can provide valuable insight into the K chemistry. However, for typical parts per billion K(g) concentrations in biomass flames and reactor gases, the product of atomic line strength and absorption path length can give rise to such high absorbance that the sample becomes opaque around… CONTINUE READING
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