Issue 2, 2025

Enhanced emission spectra from flame-assisted LIBS for high-sensitivity detection of Pb in water

Abstract

Laser-induced breakdown spectroscopy (LIBS) is a powerful technique for detecting and analyzing material elements through plasma emission generated by high-power laser pulses. In this study, the enhancement of Cu plasma emission spectra using flame-assisted LIBS was investigated. The plasma temperature and electron number density were calculated to understand the enhancement mechanism. Additionally, the dry droplet pretreatment method was combined with flame-assisted LIBS to quantitatively analyze trace amounts of heavy metal Pb in aqueous solutions. A calibration curve for Pb was established, and the limits of detection (LOD) for Pb with and without flame assistance were determined. The LOD without flame was 15.120 ng mL−1, while the LOD with flame assistance was significantly lower at 0.741 ng mL−1, demonstrating a 20-fold improvement. The R2 values of the calibration curves with and without flame assistance were 0.987 and 0.999, respectively. These results confirm that the flame-assisted method significantly enhances LIBS signal intensity, and the combination with dry droplet pretreatment improves the sensitivity for analyzing trace metal elements in water.

Graphical abstract: Enhanced emission spectra from flame-assisted LIBS for high-sensitivity detection of Pb in water

Article information

Article type
Paper
Submitted
15 Aug 2024
Accepted
24 Oct 2024
First published
13 Dec 2024

J. Anal. At. Spectrom., 2025,40, 365-373

Enhanced emission spectra from flame-assisted LIBS for high-sensitivity detection of Pb in water

X. Wan, X. Yu, Y. Chen, Y. Wang, A. Chen and M. Jin, J. Anal. At. Spectrom., 2025, 40, 365 DOI: 10.1039/D4JA00294F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements