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Title: A Rapid and Nondestructive Plant Nutrient Analysis using Portable X-Ray Fluorescence
Contributor(s): McLaren, Timothy (author); Guppy, Christopher (author)orcid ; Tighe, Matthew (author)
Publication Date: 2012
DOI: 10.2136/sssaj2011.0355
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Abstract: Portable X-ray fluorescence (PXRF) can provide a rapid and nondestructive analysis for environmentally important elements in plant matrices. No previous publication has been able to demonstrate the application of PXRF element determination in plant material. To assess the applicability of PXRF for total element analysis, four plant species of agricultural importance {corn (maize) ['Zea mays' L.], cotton ['Gossypium hirsutum' L.], soybean ['Glycine max' (L.) Merr.], and wheat ['Triticum aestivum' L.]} were collected across northern New South Wales (NSW), Australia. The effect of scanning time and particle size on data quality was also evaluated. For three plant species (corn, cotton, and soybean) there were significant linear relationships between the acid digest values and the PXRF readings for Ca, Co, Cr, Fe, K, Mn, Ni, P, S, Si, and Zn. Only slight reductions in the regression coefficient (r²) for Fe and Zn were observed in cotton when scanning time was reduced by more than half. Similar regressions between corn and cotton at 120 s demonstrated the potential for a single algorithm for plant matrices. The use of novel techniques to optimize PXRF settings for quantitative determination of total plant elements provides an efficient alternative to traditional plant digestion.
Publication Type: Journal Article
Source of Publication: Soil Science Society of America Journal, 76(4), p. 1446-1453
Publisher: Soil Science Society of America
Place of Publication: United States of America
ISSN: 0361-5995
Field of Research (FOR): 030105 Instrumental Methods (excl Immunological and Bioassay Methods)
070101 Agricultural Land Management
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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