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Elemental analysis of agricultural soil samples by particle induced X-ray emission (PIXE) technique |
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| Authors: | Paulo E Cruvinel Robert G Flocchini Paulo Artaxo Silvio Crestana and Paulo S P Herrmann Jr |
| Affiliation: | a Embrapa Instrumentação, P.O. Box 741, CEP 13560-970 São Carlos, Brazil b Crocker Nuclear Laboratory, University of California, Davis, CA 95616-8569, USA c Instituto de Física – USP, P.O. Box 20516, CEP 01498-970, São Paulo, Brazil |
| Abstract: | In agriculture, elements essential to vital processes are also called nutrients. A suitable and reliable particle induced X-ray emission (PIXE) methodology for content determination of essential nutrients in soil samples was developed and its effectiveness proved. The PIXE method is applied to intermediate thickness samples, whose mass per area unit are smaller than 1 μg/cm2. Precision and accuracy of the method was estimated after repeated measurements of a single reference material: CRM PACS-2 (estuarine sediment) with a matrix quite similar to the soil samples measured. This paper reports the results of elemental measurements in soil samples. A discussion of agricultural soil sample preparation for PIXE analysis is also presented. |
| Keywords: | PIXE Nutrients Agriculture Soil |
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