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Breakthrough in Multi-Component Gas Detection: Research from Chongqing University of Technology

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— 1 min read

In a groundbreaking study published in Spectrochimica Acta Part A, researchers from Chongqing University of Technology have proposed a novel parallel dual output model for spectral separation and concentration detection of nitrogen oxides (NO) and ammonia (NH3) mixed gases. This innovative approach utilizes multi-dimensional feature fusion and polynomial curve concentration inversion models to achieve high accuracy and precision in gas detection.

Key Takeaways:

  • The research team developed a parallel dual output model that utilizes multi-dimensional feature fusion to separate the differential optical density (DOD) of NO and NH3.
  • The model consists of two feature extraction branches, one for each gas, which are designed to realize synchronous separation of the DOD.
  • The polynomial curve concentration inversion model is established to construct the relationship between DOD and single-component gas concentration.
  • The experiment shows that the uncertainty of NO and NH3 are 1.71% and 1.28%, respectively, and the detection limits are 0.087 ppm·m and 0.05 ppm·m, respectively.
  • The proposed model is expected to be widely applied in the field of multi-component gas detection, contributing to public health and environmental protection.
  • The research team includes Haiwang Liu, Bo Peng, Mi Zhu, and Ningsheng Liao from Chongqing University of Technology.

Statistics:

  • The uncertainty of NO and NH3 are 1.71% and 1.28%, respectively.
  • The detection limits for NO and NH3 are 0.087 ppm·m and 0.05 ppm·m, respectively.
  • The research has been peer-reviewed and published in Spectrochimica Acta Part A.
  • The journal Spectrochimica Acta Part A is published by Pergamon-elsevier Science Ltd.

Sources:

  • Liu, H., Peng, B., Zhu, M., & Liao, N. (2025). A parallel dual output model based on multi-dimensional feature fusion: for spectral separation and concentration detection of NO and NH3 mixed gas. Spectrochimica Acta Part A, 344, 126655.
  • Spectrochimica Acta Part A. (2025). Spectrochimica Acta Part A can be contacted at: Pergamon-elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England.
  • Elsevier. (n.d.). Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy. Retrieved from

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