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Simultaneous determination of La, Ce, Pr, and Nd elements in aqueous solution using surface-enhanced laser-induced
Xinyan Yang1, Zhongqi Hao1, Meng Shen1
1Wuhan National Laboratory for Optoelectronics (WNLO), Huazhong University of Science and Technology (HUST), Wuhan, Hubei 430074, PR China.
Talanta
|November 26, 2016
Summary
Surface-enhanced laser-induced breakdown spectroscopy (SENLIBS) effectively detects rare earth elements (REEs) in aqueous solutions. This method offers a feasible approach for quantifying lanthanum, cerium, praseodymium, and neodymium with low detection limits.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Materials Science
Background:
- Accurate determination of rare earth elements (REEs) is crucial for efficient extraction processes.
- Traditional methods for REE analysis can be complex and time-consuming.
- Developing rapid and sensitive techniques for REE detection is an ongoing challenge.
Purpose of the Study:
- To introduce and evaluate surface-enhanced laser-induced breakdown spectroscopy (SENLIBS) for the quantitative analysis of REEs in aqueous solutions.
- To establish the feasibility of SENLIBS for detecting specific REEs: lanthanum (La), cerium (Ce), praseodymium (Pr), and neodymium (Nd).
- To determine the limits of detection (LoDs) for these REEs using the SENLIBS technique.
Main Methods:
- Utilized surface-enhanced laser-induced breakdown spectroscopy (SENLIBS) for REE detection.
- Analyzed aqueous solutions containing La, Ce, Pr, and Nd.
- Dried analytical samples on a zinc (Zn) metal substrate.
- Selected specific emission lines for quantitative analysis: La II 394.91nm, Ce II 418.66nm, Pr II 422.29nm, and Nd II 406.10nm.
- Optimized experimental parameters for enhanced sensitivity.
Main Results:
- Achieved low limits of detection (LoDs) for the targeted REEs.
- Reported LoDs of 0.85 μg/mL for La, 4.07 μg/mL for Ce, 2.97 μg/mL for Pr, and 10.98 μg/mL for Nd.
- Demonstrated the effectiveness of the Zn metal substrate in enhancing the spectral signal.
- Validated the quantitative analysis capabilities of SENLIBS for REEs.
Conclusions:
- Surface-enhanced laser-induced breakdown spectroscopy (SENLIBS) is a viable and sensitive method for determining rare earth elements in aqueous solutions.
- The SENLIBS technique, combined with a Zn metal substrate, offers improved detection limits for La, Ce, Pr, and Nd.
- This study confirms the potential of SENLIBS as a valuable tool in REE analysis, particularly for extraction and process monitoring.
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