Bibliographic Details
| Title: |
In situ Determination of K, Ca, S and Si in Fresh Sugar Cane Leaves by Handheld Energy Dispersive X-Ray Fluorescence Spectrometry |
| Authors: |
Guerra, Marcelo B. B., Adame, Andressa, Almeida, Eduardo de, Brasil, Marcos A. S., Schaefer, Carlos E. G. R., Krug, Francisco J. |
| Source: |
Journal of the Brazilian Chemical Society. May 2018 29(5) |
| Publisher Information: |
Sociedade Brasileira de Química, 2018. |
| Publication Year: |
2018 |
| Subject Terms: |
in situ analysis, portable X-ray fluorescence spectrometry, plant mineral analysis, sugar cane, silicon |
| More Details: |
A portable energy dispersive X-ray fluorescence spectrometer was evaluated in the in situ analysis of fresh sugar cane leaves for real time plant nutrition diagnosis. Fresh leaf fragments (n = 10 sugar cane varieties; 20 fragments per leaf; 2 measurement sites per fragment) were irradiated and the averaged data from X-ray characteristic emission lines intensities (for K, Ca, S and Si Kα lines) were in close agreement with mass fraction data obtained by a validated comparative method. The linear correlation coefficients (r) ranged from 0.9575 for Ca to 0.9851 for Si. The obtained limits of detection were at least two-fold lower than the critical nutrient levels. Manganese can also be properly determined, but validation still requires more robust calibration models. The proposed method is a straightforward approach towards the fast evaluation of the nutritional profile of plants avoiding time-consuming steps, which involve drying, grinding, weighing, and acid digestion. |
| Document Type: |
article |
| File Description: |
text/html |
| Language: |
English |
| ISSN: |
0103-5053 |
| DOI: |
10.21577/0103-5053.20170229 |
| Access URL: |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532018000501086 |
| Rights: |
info:eu-repo/semantics/openAccess |
| Accession Number: |
edssci.S0103.50532018000501086 |
| Database: |
SciELO |
