COMMITTED EFFECTIVE DOSE DUE TO THE INTAKE OF 40K, 226Ra, 228Ra AND 228Th CONTAINED IN FOODS INCLUDED IN THE DIET OF THE RIO DE JANEIRO CITY POPULATION, BRAZIL

Lopes, José Marques; Garcêz, Ricardo Washington Dutra; Filgueiras, Rogério de Andrade; Silva, A X; Braz, Delson

doi:10.1093/rpd/ncx310

Cited by 14 publications

(2 citation statements)

References 12 publications

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“…There is no Brazilian statistical data for the amount of seasoning and nuts consumed in one year, maybe due to small consumption when it is compared to other categories of food, such as cereals, meats, beverages, etc. (Lopes et al, 2018). Dn the other hand, the seasonings consumption has regional and seasonal characteristics.…”

Section: Dose Assessmentmentioning

confidence: 99%

Study of K-40, Ra-226, Ra-228 and Ra-224 activity concentrations in some seasoning and nuts obtained in Rio de Janeiro city, Brazil

et al. 2019

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Rio de Janeiro city is the second most populous city in Brazil with almost 7 million inhabitants, the local market offers a great diversity of foods, nuts and seasonings, national and imported. Seasonings are used worldwide, some have a common use as salt and sugar, besides others used locally as cheiro verde, a mixture of chives (Allium schoenoprasum) and parsley (Petroselinum crispum) used in Rio de Janeiro, Brazil. According to the Onternational Food Safety Authorities Network (2011), plants used as food commonly have K-40, Th-232 and U-238 and their progenies. On a variety of concentrations, naturally occurring radionuclides are present in every part of the earth and in the tissue of all living beings. Natural radionuclides can be found almost everywhere; in soil, water and atmosphere, subjecting human beings to a daily exposure. The K-40 is responsible for about 60% of the total annual effective dose due to ingestion (United Nations Scientific Committee on the Effects of Atomic Radiation, 2008). Therefore, it is a radionuclide of relevance both in the environmental point of view and radiological protection (Zhu, 2001). Gamma-ray spectrometry using high-purity germanium detectors (HPGe) is a procedure widely used for determining the concentrations of natural and artificial radionuclides in environmental samples. As a nondestructive technique, this method possesses advantages in multi-element analysis, simplified sample preparation (i.e., does not require any chemical separation process), and applicability for precise quantitative determination of the radioactive content in a sample. The most accurate method to determine the activity concentration of radionuclides is to use an adequate standard source with similar geometrical dimensions, density, and chemical compositions to the sample under study (Díaz & Vargas, 2008). This study aims to determine activities concentrations for the radionuclides K-40, Ra-226, Ra-228, Ra-224 in nuts and seasoning samples obtained in Rio de Janeiro City, Brazil, using a hyper pure germanium detector (HPGe) and the LabSDCS software for the calculation of self-absorption correction. 2 Materials and methods 2.1 Sample analyses The nuts and seasoning samples analyzed were acquired in informal street commerce of Rio de Janeiro city, Brazil. The samples analyzed are listed in Table 1, along with their botanical names and the physical characteristic in which they were analyzed.

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Section: Dose Assessmentmentioning

confidence: 99%

Study of K-40, Ra-226, Ra-228 and Ra-224 activity concentrations in some seasoning and nuts obtained in Rio de Janeiro city, Brazil

et al. 2019

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“…The soil–plant–human sequence is an important route of radionuclide transfer into the human body. In accordance with international legal arrangements, it is necessary to assess the radiation doses received in the population of each country [ 31 , 32 ]. Furthermore, tea plants can be treated as sensitive indicators of environmental contamination with radionuclides, as they have a tendency to absorb minerals also containing radionuclides [ 33 ].…”

Section: Introductionmentioning

confidence: 99%

Do You Know What You Drink? Comparative Research on the Contents of Radioisotopes and Heavy Metals in Different Types of Tea from Various Parts of the World

Grządka,

Bastrzyk,

Orzeł

et al. 2024

Foods

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The aim of this study was to assess the potential health risks of radioactive elements and heavy metals ingested through the consumption of various types of tea imported to the Polish market (black, green, red, oolong and white). The concentrations [Bq/kg] of radionuclides (40K, 137Cs, 226Ra, 210Pb and 228Th) in tea leaves before and after brewing were measured using γ-ray spectrometry with high-purity germanium (HPGe). The concentrations [mg/kg] of the studied elements (Fe, Cr, Cu, Mo, Al, Mn, Ni, P, V, Cd and Pb) were determined using a microwave-induced plasma optical emission spectrometer (MIP-OES). The results presented here will help to expand the database of heavy metals and radioactivity in teas. With regard to the potential health risk, the percentage of leaching of individual elements in different types of tea infusions was determined, and the assessment of the consumption risk was estimated. Since the calculated exposure factors, namely the HQ (Hazard Quotient) and THQ (Target Hazard Quotient), do not exceed critical levels, teas can still be considered health-beneficial products (most of the radionuclides as well as elements remain in the leaves (65–80%) after brewing).

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Excess lifetime cancer risk and committed effective dose associated with dietary exposure to radioactivity of natural origin from mining areas

Anyimah–Ackah

Ofosu

Lutterodt

et al. 2021

J Consum Prot Food Saf

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COMMITTED EFFECTIVE DOSE DUE TO THE INTAKE OF 40K, 226Ra, 228Ra AND 228Th CONTAINED IN FOODS INCLUDED IN THE DIET OF THE RIO DE JANEIRO CITY POPULATION, BRAZIL

Cited by 14 publications

References 12 publications

Study of K-40, Ra-226, Ra-228 and Ra-224 activity concentrations in some seasoning and nuts obtained in Rio de Janeiro city, Brazil

Study of K-40, Ra-226, Ra-228 and Ra-224 activity concentrations in some seasoning and nuts obtained in Rio de Janeiro city, Brazil

Do You Know What You Drink? Comparative Research on the Contents of Radioisotopes and Heavy Metals in Different Types of Tea from Various Parts of the World

Excess lifetime cancer risk and committed effective dose associated with dietary exposure to radioactivity of natural origin from mining areas

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