Portable X-ray fluorescence system to measure Th and U concentrations

Guazzelli, Marcilei A.; Pereira, Bruno Ribeiro; Medina, N. H.; Rizzutto, M. A.

doi:10.1016/j.jenvrad.2018.04.012

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…This portable X-Ray fluorescence (pXRF) setup uses a commercial system that includes a mini X-ray tube that operates at voltages ranging from 10 to 50 kV and currents from 5 to 200 µA with a transmission target of silver (Ag). The detector used is an X-ray Si Drift semiconductor (25 mm2 x 500 μm / 0.5 mil) with a 12.5 μm thin beryllium window, which is a high-performance X-ray detector with energy resolution from 125 eV FWHM at 5.9 keV ( 55 Fe), both from Amptek® [13]. Measurements were performed with a voltage of 30 kV applied to the tube, allowing the production of X-rays with energy up to 30 keV, and a current of about 5 µA with an excitation/detection time of 300 s (live time) [13].…”

Section: Elemental Analysis By Energy Dispersive X-ray Fluorescencementioning

confidence: 99%

“…The detector used is an X-ray Si Drift semiconductor (25 mm2 x 500 μm / 0.5 mil) with a 12.5 μm thin beryllium window, which is a high-performance X-ray detector with energy resolution from 125 eV FWHM at 5.9 keV ( 55 Fe), both from Amptek® [13]. Measurements were performed with a voltage of 30 kV applied to the tube, allowing the production of X-rays with energy up to 30 keV, and a current of about 5 µA with an excitation/detection time of 300 s (live time) [13]. The characteristic X-ray emitted by the Ag source is predominantly EKα = 22.16 keV and EKβ = 24.94 keV.…”

Section: Elemental Analysis By Energy Dispersive X-ray Fluorescencementioning

confidence: 99%

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Banana and its nutrients: the power of the heart

Palma

Curado

Rizzutto³

et al. 2022

J. Phys.: Conf. Ser.

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Macro and micronutrients are essential minerals for the development of living beings, and this separation is given in quantitative reason, that is, while macronutrients, such as potassium and calcium, are required in larger amounts, micronutrients such as iron and zinc, are required in small quantities. For humans, potassium (K) is an essential macronutrient. In the human body, potassium has the function of regulating osmotic pressure, transmitting nerve impulses and carrying out muscle contraction. Its existence is found in high concentration in bananas. The heart banana plant is a little-known part among the by-products generated by banana cultivation, and is commonly discarded in the soil in order to increase its organic content, due to its high content of minerals such as potassium, calcium and zinc. Thus, this research work aimed to explore the nutritional potential of unconventional parts of banana for human consumption, through Energy Dispersion X-Ray Fluorescence technique, with which it is possible to identify and quantify the main constituent elements. The species were studied Musa Acuminata ‘Dwarf/Cavendish’, Musa Acuminata x M. Balbisiana ‘Apple/Manzano’, Musa Ornata ‘Ornamental’ and Musa Acuminata ‘Fig’. The quantity of potassium and of other elements such as Ca, Fe, Mn, Zn, and Rb in the banana heart samples were studied superior to the findings in the literature.

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Section: Elemental Analysis By Energy Dispersive X-ray Fluorescencementioning

confidence: 99%

Section: Elemental Analysis By Energy Dispersive X-ray Fluorescencementioning

confidence: 99%