Quantu-design and development of a software package dedicated to k0-standardized NAA

Bacchi, M. A.; Fernandes, E. A. N.

doi:10.1023/a:1025496716711

Cited by 69 publications

(12 citation statements)

References 8 publications

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“…The irradiation was carried out in the IEA-R1 nuclear research reactor, IPEN/CNEN, São Paulo, Brazil, at a thermal neutron flux of 7 9 10 12 cm -2 s -1 during 4 h. Irradiated samples were returned to CENA/USP and the induced activity was measured at four occasions, with decay times of 4, 7, 15 and 30 days, and counting time of 15, 30, 60 and 120 min, respectively. Two different HPGe detectors were used, with relative efficiencies of 50 and 55 % for the photopeak 1332 keV of 60 Co. Mass fractions of chemical elements and the uncertainties were calculated by the k 0 -method [12], using the software package Quantu [13].…”

Section: Methodsmentioning

confidence: 99%

Instrumental neutron activation analysis of kilogram-sized samples of dog food

Elias

Koster-Ammerlaan

Fernandes

et al. 2015

J Radioanal Nucl Chem

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Dog food from 24 regular 1 kg bags of the same production lot was evaluated by LS-NAA and conventional NAA. After analyzing the entire content of bags by LS-NAA, one test portion of 350 mg from each bag was evaluated by NAA. Br, Ca, K, Na and Zn could be measured by LS NAA and, except for K, the variability was higher than the uncertainty of measurement, indicating differences of composition between bags. The variation of results obtained from conventional NAA agreed with that from LS-NAA, confirming the representativeness of the small portions.

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Section: Methodsmentioning

confidence: 99%

Instrumental neutron activation analysis of kilogram-sized samples of dog food

Elias

Koster-Ammerlaan

Fernandes

et al. 2015

J Radioanal Nucl Chem

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“…The induced radioactivity was measured in the Centro de Energia Nuclear na Agricultura at decay periods of about 4, 7, 15, and 40 days using two different germanium detectors with 50% and 55% relative efficiencies for the 1,332 keV photopeak from 60 Co. Results were calculated by the k 0 -method using the in-house software package Quantu [5].…”

Section: Methodsmentioning

confidence: 99%

Chemical Elements in Organic and Conventional Sweet Oranges

Turra

Fernandes

Bacchi

et al. 2011

Biol Trace Elem Res

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This work focuses on the determination of chemical elements in sweet oranges of variety Valencia produced under organic and conventional systems using instrumental neutron activation analysis and inductively coupled plasma mass spectrometry. The distribution of chemical elements was variable among the fruit parts with usually higher concentrations of Br, Ca, Ce, K, La, Na, Rb, and Sc in the peel. However, K, Na, and Rb also presented high values in the juice samples, while Fe and Zn were higher in the seeds. Differences between organic and conventional oranges were found for Br and Cu.

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“…Details of the analysis and the presented results can be found elsewhere (França et al, 2004b). The uncertainties were calculated by the Quantu software (Bacchi et al, 2003) and compared to the standard deviation observed (Fig. 1).…”

Section: Methodsmentioning

confidence: 99%