Simple procedure for nutrient analysis of coffee plant with energy dispersive X-ray fluorescence spectrometry (EDXRF)

Scientia Agricola

Tiago Tezotto²  José Laércio Favarin²  Ana Paula Neto²  Priscila Lupino Gratão¹  Ricardo Antunes Azevedo¹  Paulo Mazzafera¹ 

[1] ,USP ESALQ Depto. de Produção VegetalPiracicaba SP ,Brasil

关键词: Coffea arabica;    metal toxicity;    mineral nutrition;    analytical procedure;   

DOI  :  10.1590/S0103-90162013000400007

来源: SciELO

【 摘 要 】

Nutrient analysis is used to estimate nutrient content of crop plants to manage fertilizer application for sustained crop production. Direct solid analysis of agricultural and environmental samples by energy dispersive X-ray fluorescence spectrometry (EDXRF) was chosen as alternative technique to evaluate the simultaneous multielemental quantification of the most important essential elements in coffee (Coffea arabica L.) plants. Inductively coupled plasma atomic emission spectrometry and certified reference materials made from leaves were used to calibrate and check the trueness of EDXRF method for the determination of the concentration of several nutrients in coffee leaves and branches. Fluorescence spectrometry proved to be advantageous and presented low cost as loose powder samples could be used. Samples collected from a field experiment where coffee plants were treated with excess of Ni and Zn were used to verify the practical application of the method. Good relationships were achieved between certified values and data obtained by EDXRF, with recoveries ranging from 82 to 117 %.

【 授权许可】

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