Sensitivity improvement of laser-induced breakdown spectroscopy to detect heavy metals in water by Tesla coil discharge
Literature Information
Anmin Chen, Xun Gao
In this paper, Tesla coil discharge (TCD) was combined with laser-induced breakdown spectroscopy (LIBS). The TCD successfully enhanced the emission of Al atomic lines and AlO molecular bands in Al LIBS, and improved the sensitivity of quantitative analysis of Cr and Pb elements detected by LIBS in water. Firstly, the paper explored the effect of the distance from the TCD tip to the sample surface on the emission of Al atomic lines and AlO molecular bands, finding that 5 mm was the optimal distance. Secondly, the paper investigated the effect of laser energy on the emission of Al atomic lines and AlO molecular bands, finding that 25.1 mJ was the optimal laser energy. Finally, the paper constructed the calibration curves of Cr and Pb elements in water and calculated the limit of detection (LoD), finding that compared with surface enhanced LIBS (SELIBS), TCD–SELIBS reduced the LoDs of Cr and Pb elements from 16.7 ng mL−1 and 12.2 ng mL−1 to 7.3 ng mL−1 and 5.5 ng mL−1, respectively. It indicated that the combination of TCD and SELIBS can achieve high-sensitivity detection of Cr and Pb elements in the water. The combination of TCD and LIBS is a simple, low-cost, easy-to-operate, industrialized and commercialized technology, and has a promising application prospect in the high-sensitivity analysis of heavy metals in water.
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DOI: 10.1039/A708698I
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The Journal of Analytical Atomic Spectrometry (JAAS) is the central journal for publishing innovative research on fundamentals, instrumentation, and methods in the determination, speciation and isotopic analysis of (trace) elements within all fields of application. This includes, but is not restricted to, the most recent progress, developments and achievements in all forms of atomic and elemental detection, isotope ratio determination, molecular analysis, plasma-based analysis and X-ray techniques. The journal welcomes full papers, communications, technical notes, critical and tutorial review articles, editorials, and comments, in addition to the Atomic Spectrometry Updates (ASU) literature reviews that are prepared by an expert panel. Submissions are welcome in the following areas, but note this list reflects the current scope and authors are strongly encouraged to contact the Editorial team if they believe that their work offers potentially new and emerging research relevant to the journal remit: Fundamental studies in the following. New and existing sources for atomic emission, absorption, fluorescence and mass spectrometry and those that provide both atomic and molecular information Sample introduction techniques for solids, liquids, gases Improvements in sensitivity, selectivity, precision, accuracy and/or robustness Isotope ratio measurements, including techniques for improving precision and mass bias correction Single channel and multichannel simultaneous detection systems Chemometrics, statistics, calibration techniques and internal standardisation Theoretical and numerical modelling of fundamental processes related to all of the above methodologies Novel or improved methodologies in areas of application including, but not limited to the following. Biosciences, including elemental, speciation and isotopic analysis in biological systems, immunoassays based on metal-labeled antibodies, bio-imaging, and nanoparticle toxicology Geochemistry Environmental science Materials science, including engineered nanoparticles and quantum dots Metrology, including reference materials Forensic analysis Food and agricultural sciences Energy Archaeometry Molecular analysis. Molecular sources for elemental and isotopic analysis Atomic sources for molecular analysis Atomic and molecular techniques simultaneously used for complementary chemical information All contributions are judged on originality and quality of scientific content, and appropriateness of length to content of new science.
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