AI Article Synopsis
- Laser-induced breakdown spectroscopy (LIBS) shows promise for fast detection in areas like environmental monitoring and mining, but struggles with low sensitivity for heavy metal aerosols due to minimal mass ablation and major spectral fluctuations.
- The researchers achieved an exceptional limit of detection (LOD) of 0.0035 μg/m³ for lead aerosols by combining LIBS with laser-induced fluorescence (LIBS-LIF) and a gated photomultiplier tube (PMT).
- This hybrid approach improved sensitivity by 4 orders of magnitude and reduced spectral fluctuations by 90%, marking a significant step forward in real-time pollution monitoring.
Article Abstract
Laser-induced breakdown spectroscopy (LIBS) has great potential for rapid and in-situ detection in various applications, including environmental monitoring, mining, and metallurgy. However, its application is constrained by low sensitivity, particularly in the field of heavy metal aerosol detection due to little mass ablation and significant spectral fluctuations. For the first time, we achieved an outstanding limit of detection (LOD) of 0.0035 μg/m³ for lead aerosols using our hybrid LIBS assisted with laser-induced fluorescence (LIBS-LIF) and gated photomultiplier tube (PMT) approach. Compared to traditional LIBS, the sensitivity was improved by 4 orders of magnitude, and the spectral fluctuations were reduced by 90 %. This work represents a significant advancement in rapid and in-situ pollution monitoring, providing an efficient and ultra-sensitive alternative to existing methods.
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| http://dx.doi.org/10.1016/j.talanta.2024.127091 | DOI Listing |
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