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Direct and Sensitive Lead Analysis of Wheat Flour Using Laser-Induced Fluorescence Combined with Laser-Induced Breakdown Spectroscopy Under Low-Energy Ultraviolet Laser Ablation.
- Source :
-
Journal of Applied Spectroscopy . May2024, Vol. 91 Issue 2, p411-418. 8p. - Publication Year :
- 2024
-
Abstract
- Lead in any food is harmful even at low concentrations. In this study, a direct and highly sensitive lead analysis technique was developed for wheat flour using laser-induced fluorescence combined with laser-induced breakdown spectroscopy. Wheat flour was pressed into small pellets and ablated by a low-energy ultraviolet 266-nm laser. A tunable dye laser constructed in our laboratory was used to resonantly excite the lead. The optimized interpulse time delay was 400 ns. A calibration curve was constructed and the detection limit for lead was 73.8 ppb. This method could be used to directly and sensitively analyze wheat flour for trace concentrations of lead. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00219037
- Volume :
- 91
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Spectroscopy
- Publication Type :
- Academic Journal
- Accession number :
- 177309669
- Full Text :
- https://doi.org/10.1007/s10812-024-01735-7