Granulometry and Moisture Influence for In Situ Soil Analysis by Portable EDXRF

Melquíades, Fábio Luiz; Biasi, G; Parreira, Paulo Sérgio; Appoloni, Carlos Roberto; Vanin, Vito R.

doi:10.1063/1.3608980

Cited by 9 publications

(5 citation statements)

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“…Evaluation of the three naturally occurring radionuclide concentrations in the milk samples with the UNSEAR 2000 permissible limit for powdered milks and liquid milk samples shows that all 226 Ra and 232 Th activity levels in both samples are well below the permissible limits, while 40 K exceeded the permissible limit in Peak milk, Peak Chocolate, Cowbell Chocolate, Loya, Miksi, Coast, Real, and Nunu milk for powdered milk and exceeded the permissible limit for liquid milk in Vital and Nutric milk. It is pertinent to note that the activity levels determined in the current study are above the values gotten for milk consumed in some countries like Saudi Arabia [7]; Iran/France [14]; Jordan [15]; Egypt [16]; and Syria [17], while the values are comparable to those milk consumed in other countries like New Zealand [14] and Brazil [18]. Conversely, this result shows that the mean activity concentrations in the various milk brands sampled are well within their international permissible limits.…”

Section: Resultssupporting

confidence: 65%

Economic Approach to Risk Analysis of Naturally Occurring Radioactive Materials (NORMs) in Dairy Milk Products Consumed in Nigeria

Agbalagba¹,

Agbalagba²

2020

Multifunctionality and Impacts of Organic and Conventional Agriculture

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One of the UN SDGs is for sustainable food for all; thus the need for safety in milk consumption in Nigeria which is also consonant with the NAFDAC regulatory plan of safety of food in Nigeria. This research work examined the radioactivity content in milks (powdered and liquid) consumed in Nigeria using sodium iodide (7.6 cm Â 7.6 cm NaI(Tl)) detector. The estimated total cost of health detriment of consumption of the investigated milk products shows that the children age group has the highest cost health detriment per-caput dose with an estimated total cost of health detriment of US $17.26 million, followed by the adult age group with an estimated cost implication of US $11.86 million, and infants with the least computed cost implication of US $10.192 million. The overall results show that the milks consumed in Nigeria are radiologically safe and may not constitute any direct radiological health burden to consumers of these milk brands. Optimization of radiation protection mechanism for cost-benefit analysis is recommended.

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Section: Resultssupporting

confidence: 65%

Economic Approach to Risk Analysis of Naturally Occurring Radioactive Materials (NORMs) in Dairy Milk Products Consumed in Nigeria

Agbalagba¹,

Agbalagba²

2020

Multifunctionality and Impacts of Organic and Conventional Agriculture

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“…If the results for all radionuclides are summarized, it can be seen that there are no statistically significant differences between the radioactivity concentrations between the samples. Furthermore, the activity of the concentrations of 232 Th, 226 Ra, 137 Cs and 40 K in milk that was found in this study is compared with reports from other authors in different countries where it can be seen that there are variations of the concentrations and the values in our study are below the obtained values for milk consumed in some countries such as Iran/France (Hosseni et al, 2006), Jordan (Zaid et al, 2010), Egypt (Harb et al, 2010), Turkey (Cengiz., 2020), Brazil (Melquiades et al, 2002) and other countries. Although the differences in the levels of radioactivity in different brands of milk are small, it is considered that the source of raw materials used for milk production is the contributing factor.…”

Section: Resultsmentioning

confidence: 99%

Determination of Radionuclide Concentration in Milk Samples Consumed in Republic of North Macedonia and Population Dose Rate Estimates

Angeleska¹,

Nikolovska²,

Stojkovik³

et al. 2022

JAPS

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Milk is one of the most important food products in the human diet and contains all the macronutrients, that are, proteins, carbohydrates, fat, vitamins (A, D and B groups) and trace elements, especially calcium, phosphorus, magnesium, zinc and selenium. Milk contamination is largely due to the grazing of animals on contaminated grass and drinking water. Grass is a direct source or route of radionuclides to animals and humans through the consumption of meat and milk. One of the important tasks of the veterinary activity is veterinary-sanitary supervision of the production and sale of milk and dairy products, whose main goal is the provision of biologically good milk and dairy products from healthy animals. The purpose of this study was to determine the activity concentrations of 226 Ra, 232 Th 40 K and 137 Cs in milk samples most commonly used in daily consumption in the Republic of North Macedonia and based on the results, the risk of radiation to the population can be estimated. An instrument -gamma spectrometer (Canberra Packard) with a high purity germanium detector and GENIE 2000 programme was used for measurement of the samples. On the basis of the performed tests, the main activity concentrations of 226 Ra, 232 Th, and 40 K were 1.76 ± 0.23; 1.05 ± 1.00; 31.9 ± 5.07 (Bq•kg -1 ), respectively. 40 K has the highest value compared to other radionuclides due to the process of transfer from soil to grass and from grass and water to milk. The activity of 137 Cs is below the detection limit for all tested milk types. This shows that there is no risk of radiation to the population, i.e., the safety limits are not exceeded, which points out the insignificant threat of radiation arising from radionuclides that are naturally or artificially present in the tested milk, and that reach humans through the food chain.

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“…Para aplicação em amostras de solo em campo, correções para estes dois fatores devem ser consideradas, o que não inviabiliza sua utilização (BASTOS; MELQUIADES; BIASI, 2012), (MELQUIADES et al, 2011).…”

Section: Fonte: Autoresunclassified

Análise Multielementar de solos: uma proposta envolvendo equipamento portátil de fluorescência de raios X

Terra¹,

Sanches²,

Bueno³

et al. 2014

Semina: Tech. Ex.

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Equipamentos portáteis são escolhas excelentes para a agricultura de precisão, visto que eles permitem obter informações in situ da composição do solo. Neste sentido, os resultados são obtidos rapidamente e implementações podem ser aplicadas imediatamente, dependendo das características do solo local. Este estudo tem o objetivo de desenvolver um método para medida de elementos inorgânicos em solos in natura utilizando um equipamento portátil de EDXRF (Fluorescência de Raios X por Dispersão em Energia) e calibração multivariada por regressão PLS (Mínimos Quadrados Parciais). Sete materiais de referência certificados foram utilizados para construir os modelos PLS para Si, K, Ca, Mn e Fe. Dois padrões foram utilizados para a validação externa do modelo. Os resultados mostram que o desvio relativo máximo obtido foi de 21%. Palavras-chave: Solo. Fluorescência de raios X. Agricultura de precisão. ResumoPortable instruments are excellent choices to perform precision agriculture since they allow in situ information about soil composition. In such a way, results are obtained quickly and inputs can be applied promptly, depending on the local soil characteristics. This study aims to develop a method to measure inorganic elements at in natura soils using a portable EDXRF (Energy Dispersive X-ray Fluorescence) equipment and multivariate calibration through Partial Least Square Regression (PLS). Seven certified reference standards are used to build the PLS models for Si, K, Ca, Mn and Fe. Two standards are separated for external PLS validation. Finally, the results show that a maximum of 21% is obtained for relative deviation.

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Granulometry and Moisture Influence for In Situ Soil Analysis by Portable EDXRF

Cited by 9 publications

References 0 publications

Economic Approach to Risk Analysis of Naturally Occurring Radioactive Materials (NORMs) in Dairy Milk Products Consumed in Nigeria

Economic Approach to Risk Analysis of Naturally Occurring Radioactive Materials (NORMs) in Dairy Milk Products Consumed in Nigeria

Determination of Radionuclide Concentration in Milk Samples Consumed in Republic of North Macedonia and Population Dose Rate Estimates

Análise Multielementar de solos: uma proposta envolvendo equipamento portátil de fluorescência de raios X

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