Journal
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
Volume 33, Issue 6, Pages 919-944Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ja00293a
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Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2015/06161-1, 2012/11998-0, 2014/50951-4]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [475455/2013-4, 309679/2014-1, 311085/2014-8, 141034/2016-5, 465768/2014-8]
- National Science Foundation Major Research Instrumentation Program [MRI-1429544]
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The ability to provide a fast and multielemental analytical response directly from a solid sample makes both laser-induced breakdown spectroscopy (LIBS) and X-ray fluorescence spectrometry (XRF) very versatile tools for plant nutrition diagnosis. This review focuses on the main developments and advances in LIBS and XRF in the analysis of plant materials over the last ten years. Fundamental aspects and instrumentation are given for both techniques. The developments in the quantitative analysis of plant leaves are discussed, with special emphasis on the key aspects and challenges concerning field sampling protocols, sample preparation, and calibration strategies. Microchemical imaging applications by LIBS and XRF (including synchrotron radiation) are also presented in a broader selection of plant compartments (e.g., leaves, roots, stems, and seeds). Challenges, expectations and complementarities of LIBS and XRF towards plant nutrition diagnosis are thoroughly discussed.
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