MIP OES, AN EMERGENT ATOMIC SPECTROMETRY FOR MULTIELEMENTAL DETERMINATION IN SOIL
Keywords:
atomic emission, atomic absorption, exchangeable base cations, micronutrientsAbstract
Elemental analysis using atomic spectrometry is one of the most widely used tools for assessing soil nutrients availability. The objective of this study is to assess Microwave-Induced Plasma Optical Emission Spectrometry (MIP OES), an emerging multielement measurement method, for the analysis of calcium, magnesium, potassium, sodium, copper, zinc, iron, and manganese in soils. Calcium, magnesium, potassium, and sodium contents were quantified in nine samples and copper, zinc, iron, and manganese contents were determined in 16 samples using MIP OES and Flame Atomic Absorption or Emission (FAAS/FAES). The results indicate that the analytical sensitivity of MIP OES is lower than that of FAAS/FAES, up to one order of magnitude, with higher limits of detection and limits of quantification, although in the same order of magnitude. MIP OES demonstrated operational advantages over FAAS/FAES, such as simultaneous analyses of elements, a wider linear range, and lower cost due to the use of nitrogen generated from air, which positions it favorably as compared to other atomic spectrometry methods for soil analysis.
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Copyright (c) 2024 Micaela Pérez; Daiana Brunello, Florencia Cora Jofre, Marianela Savio, Nanci Kloster
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