Estimation of daily uranium ingestion by urban residents in Japan

Kuwahara, Chikako; Koyama, K.; Sugiyama, Hideo

doi:10.1007/bf02034850

Cited by 25 publications

(10 citation statements)

References 5 publications

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“…[1][2][3][4] In addition to these substances, it is important to investigate the intakes of radionuclides, considering them to be toxic substances, and evaluate the dietary exposure doses based on the values obtained. Studies concerning the daily intakes of radionuclides by the public have been performed in many countries, [5][6][7][8][9][10][11][12][13][14][15][16] and the nuclides investigated were natural radionuclides, such as 238 U and 232 Th, in many reports. Regarding artificial radionuclides, such as 137 Cs and 90 Sr, surveys and studies concerning the contamination level of food materials and evaluation of the exposure doses to investigate the influences of past atmospheric nuclear tests and the Chernobyl nuclear plant acci-dent and monitor environments of nuclear energyrelated facilities are mainly performed.…”

Section: Introductionmentioning

confidence: 99%

Contents and Daily Intakes of Gamma-Ray Emitting Nuclides, 90Sr, and 238U using Market-Basket Studies in Japan

Sugiyama

Terada

Takahashi

et al. 2007

JOURNAL OF HEALTH SCIENCE

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To investigate the contents of radionuclides in foods marketed in Japan and their daily intakes and exposure doses in adults, we performed market-basket studies concerning radionuclide intakes. The study period was [2003][2004][2005], and the studies were performed in 13 cities in Japan. Foods including drinking water were divided into 14 food groups, and samples were prepared by common cooking procedures. γ-ray emitting nuclides (an artificial radionuclide, radioactive Cs, and natural radionuclides, 40 K and U series such as 214 Bi, and 212 Pb, and Th series) were measured in each food group, and artificial radionuclides, 90 Sr and 238 U, were measured in a mixed sample of 13 food groups excluding drinking water. The daily intakes in adults were calculated from the concentrations of the radionuclides and mean daily consumption of foods and drinking water. The daily 137 Cs and 40 K intakes (mBq/ person · day) in the 13 cities were 12.5-<79.7 and 57309-95746, respectively. The 90 Sr intake from the food groups excluding drinking water was 20.8-53.6, with a mean of 39.2 (mBq/person · day) (deviation of the mean: 23%). Similarly, the daily 238 U intake was 5.9-31.1, with a mean of 12.6 (mBq/person · day) (deviation: 60%), showing a more than 5-fold difference between the minimum and maximum values, and there were regional differences. Since the contents of the U series, such as 214 Bi and 212 Pb, and Th series were lower than the lower detection limits in many samples, their daily intakes were not calculated. Regarding the daily intake of 137 Cs from each food group, the intakes from fish and shellfish, milk, meat/eggs, and mushrooms/seaweed tended to be higher. The daily 40 K intake from each food group varied among the areas, but the total intake from the 14 food groups was similar in all 13 cities. 40 K from these foods accounted for most of the annual effective dose (µSv/person · year) of γ-ray emitting nuclides, and the doses of 40 K, 90 Sr, and 238 U were 130-217, 0.21-0.55, and 0.10-0.51, respectively.Key words --radionuclide, intake, dose estimation, diet, cesium INTRODUCTIONClarification of the contents and distribution of toxic substances in foods, and estimation and evaluation of their intakes by the public are important to secure food safety. For this purpose, studies concerning dietary intakes of chemical substances, such as Polychlorinated Biphenyl (PCB) and dioxin, and toxic elements, such as Cd, Pb, and As, have been * To whom correspondence should be addressed: Department of Environmental Health, National Institute of Public Health, 2-3-6, Minami, Wako-shi, Saitama 351-0197, Japan. Tel.: +81-48-458-6263; Fax: +81-48-458-6270; E-mail: sugiyama@niph.go.jp performed in Japan. [1][2][3][4] In addition to these substances, it is important to investigate the intakes of radionuclides, considering them to be toxic substances, and evaluate the dietary exposure doses based on the values obtained. Studies concerning the daily intakes of radionuclides by the public have been performed in many countries, [5]...

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Section: Introductionmentioning

confidence: 99%

Contents and Daily Intakes of Gamma-Ray Emitting Nuclides, 90Sr, and 238U using Market-Basket Studies in Japan

Sugiyama

Terada

Takahashi

et al. 2007

JOURNAL OF HEALTH SCIENCE

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“…Hizikia fusiformis). However, almost all fish and shellfish samples contained lower uranium concentrations (Kuwahara et al, 1997).…”

Section: Literature Datamentioning

confidence: 98%

“…However, significant uranium levels were also found in solid foods, in particular in leafy vegetables grown on soil with high uranium concentration and in fish and seafood (Kuwahara et al, 1997;Anke et al, 2009). Uranium exposure was thus assessed for all food groups containing uranium.…”

Section: Food Consumptionmentioning

confidence: 99%

Uranium in foodstuffs, in particular mineral water

2009

EFS2

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“…Not surprisingly, the market share of this product is now much greater than that of fresh fruit, especially in the major cities in the countries. Naturally occurring radionuclides enter the human body mainly by inhalation of radon and thoron gases and their decay products [1], by ingestion of primordial radionuclides and their progeny, 40 K, and the 238 U and 232 Th series [2][3][4]. The ingested radionuclides could be concentrated in certain parts of the body for example 238 U accumulated in human kidney and lungs, 232 Th in liver, skeleton tissue and lungs and 40 K in muscles [5].…”

Section: Introductionmentioning

confidence: 99%

Radionuclide Concentrations in Some Fruit Juices Produced and Consumed in Lagos, Nigeria

Adeniji¹,

Alatise²,

Nwanya³

2013

AJEP

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Abstract:A total of seven samples of bottled fruit juice produced and consumed in Nigeria were used for the study. The average concentrations of radionuclides contained in some bottled fruit juice produced and consumed in Nigeria and also exported to neighboring countries have been estimated by means of scintillation detector which is sodium Iodide activated with thallium (Na (Ti)). The radionuclides observed with reliable regularity belonged to the series -decay naturally occurring radionuclides headed by 238 Sr were not detected in any of the bottled fruit juices which might be due to the countermeasures applied. The activity concentrations of each of the naturally occurring radionucldes in the bottled fruit juice were much lower than those recommended by the regulatory bodies. Thus, the contribution from these radionuclides does not pose any significant radiological health problem to the consumers.

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Estimation of daily uranium ingestion by urban residents in Japan

Cited by 25 publications

References 5 publications

Contents and Daily Intakes of Gamma-Ray Emitting Nuclides, 90Sr, and 238U using Market-Basket Studies in Japan

Contents and Daily Intakes of Gamma-Ray Emitting Nuclides, 90Sr, and 238U using Market-Basket Studies in Japan

Uranium in foodstuffs, in particular mineral water

Radionuclide Concentrations in Some Fruit Juices Produced and Consumed in Lagos, Nigeria

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