タグ「mushrooms」
Title: Soil-to-mushroom transfer of 137Cs, 40K, alkali–alkaline earth element and heavy metal in forest sites of Izmir, Turkey
Author: Özlem Karadeniz, Günseli Yaprak
Reference: Journal of Radioanalytical and Nuclear Chemistry , April 2011, Volume 288, Issue 1, pp 261-270
DOI: 10.1007/s10967-010-0908-7
Keywords: Soil to mushroom transfer, 137Cs, 40K, Alkali–alkaline earth elements, Heavy metals
Abstract: The present work is devoted to an investigation on the soil to mushroom transfer parameters for 137Cs and 40K radionuclides, as well as for some stable elements and heavy metals. The results of transfer factors for 137Cs and 40K were within the range of 0.06–3.15 and 0.67–5.68, respectively and the most efficiently transferred radionuclide was 40K. The TF values for 137Cs typically conformed to a lognormal distribution, while for 40K showed normal distribution. Statistically significant correlations between 137Cs soil to mushroom transfer factors and agrochemical soil properties have been revealed. Although the concentration ratios varied within the species, the most efficiently transferred elements seems to have been K, followed by Rb, Zn, Cu, Cd, S, Cs and Hg.
ＵＲＬ：http://link.springer.com/article/10.1007/s10967-010-0908-7
Title: 137Cs, 40K, alkali–alkaline earth element and heavy metal concentrations in wild mushrooms from Turkey
Author: Özlem Karadeniz, Günseli Yaprak
Reference: Journal of Radioanalytical and Nuclear Chemistry , September 2010, Volume 285, Issue 3, pp 611-619
DOI: 10.1007/s10967-010-0575-8
Keywords: Mushroom, 137Cs, 40K, Internal dose, Alkali–alkaline earth elements, Heavy metals
Abstract: In 2002, an extensive study was performed in forest sites of Izmir. This first study results led on the one hand, to quantify of 137Cs and 40K concentration in mushrooms collected in the Izmir region and to a first evaluation of dose in people due to the ingestion of radionuclide-contaminated mushrooms. The mushroom concentration values varied over a wide range from below detection limit to 401 ± 4 Bq kg−1 (dry wt) for 137Cs. The 40K concentration values obtained for different species of mushrooms ranged from 588 ± 26 Bq kg−1 to 2024 ± 63 Bq kg−1 (dry wt). The annual effective dose values due to mushroom ingestion for 137Cs are lower than the ICRP-2007’s reference level value of 1 mSv for “existing” exposure situation. Inductively coupled plasma-mass spectrometry was used to measure many alkali–alkaline earth elements and heavy metals in mushroom samples. The relationships among the concentrations of 137Cs and the stable elements were presented and the occurrence of metals in mushrooms was evaluated.
ＵＲＬ：http://link.springer.com/article/10.1007/s10967-010-0575-8
Title: Evolution of radiocaesium contamination in mushrooms and influence of treatment after collection
Author: O. Daillant, D. Boilley, M. Josset, B. Hettwig, H. W. Fischer
Reference: Journal of Radioanalytical and Nuclear Chemistry September 2013, Volume 297, Issue 3, pp 437-441
DOI: 10.1007/s10967-012-2411-9
Keywords: radiocaesium, contamination, mushrooms, preparation
Abstract: In literature quite a lot of data is available on uptake of radioactive caesium in mushrooms. There is less available on the evolution of concentration in fruitbodies after several years and on “outbound” transfer of radiocaesium from fruitbodies to their direct environment, i.e. dilution according to cooking techniques. The recent event at Fukushima has put the question of radionuclides in food, and the following exposure of consumers, high on the agenda. The purpose of this paper is twofold: (1) in order to investigate the variation in time of caesium uptake by fungi, analyses of the same species having grown on the same spot at different intervals during the last 25 years have been performed and (2) in terms of radiation protection the most important thing is the activity taken in by the consumer and not the contamination of raw products. Preparation can have a great impact on activity concentration. Various species of mushrooms frequently eaten have been sampled in Europe and contaminated areas in Japan. Different preparation techniques that can break the walls of the hyphae (drying, deepfreezing etc.) have been applied as well as different treatments: boiling or macerating in water with salt, in acid and basic media. The pH of different media was adjusted and measured. The samples and the medium were analysed separately in gamma spectrometry.
ＵＲＬ：http://link.springer.com/article/10.1007/s10967-012-2411-9
Title: Current radioactivity content of wild edible mushrooms: A candidate for an environmental reference material
Author: Zs. Szántó, M. Hult, U. Wätjen, T. Altzitzoglou
Reference: Journal of Radioanalytical and Nuclear Chemistry July 2007, Volume 273, Issue 1, pp 167-170
DOI: 10.1007/s10967-007-0730-z
Keywords: wild mushroom, Europe
Abstract: The paper presents the results of radiological investigation of several mushroom samples collected in the fall of 2004 in different parts of Europe. The work was performed in order to support decision making to develop and produce a certified reference material for quality assurance of radionuclide measurements in environmental samples. The levels of 137Cs in mushrooms varied widely ranging from 0.6 to 4300 Bq/kg on dry mass basis, while those of natural 40K were relatively constant. In one sample 60Co of unknown origin was detected (25±2 Bq/kg dry mass), while 90Sr concentrations were usually below the detection limit (<150 mBq/kg dry mass).
URL:http://link.springer.com/article/10.1007/s10967-007-0730-z
Title: Long-term 137Cs contamination of mushrooms following the Chernobyl fallout
Author: D. Mascanzoni
Reference: Journal of Radioanalytical and Nuclear Chemistry July 2001, Volume 249, Issue 1, pp 245-249
DOI: 10.1023/A:1013263114576
Keywords: 137Cs, contamination, mushrooms, Europe, Sweden
Abstract: In the aftermath of the Chernobyl accident high concentrations of 137 Cs were found in mushrooms in several European countries and in Sweden. Two edible mushrooms species were selected for a long-term investigation in order to evaluate the 137Cs contamination over a long time. Samples of Suillus variegatus and Cantharellus spp. were collected from 1986to 1998 and their 137 Cs contents assessed. The results show that the activity of 137Cs remained more or less constant in Suillus variegatus, while it increased in Cantharellus spp. This reflects the forest ecosystem of the mushrooms, where nutrient-poor substrates, rich in organic substance and with high pH maintain 137Cs available for uptake. A decay-correction of the time distribution shows that radioactive decay appears to be the main factor affecting the content of 137Cs in mushrooms, at least in the medium term.
ＵＲＬ：http://link.springer.com/article/10.1023/A%3A1013263114576
Title: Bioaccumulation of radionuclides in higher fungi in Penza region’s forest ecosystems
Author: Plotnikov, Mihail Alexeyevich
Reference: B.M., 2011
Keywords: bioaccumulation, radionuclides, mushrooms, forest ecosystems, Penza region
Abstract: The aim of the research; to study the nature of bioaccumulation of radionuclides by fruit bodies of higher fungi in forest ecosystems of the Penza region.
URL:http://www.dissercat.com/content/biologicheskaya-akkumulyatsiya-radionuklidov-vysshimi-gribami-v-usloviyakh-lesnykh-ekosistem
Title: Environmental monitoring of fodder safety, products of animal and plant origin
Author: Ledneva, Olga Alexandrovna
Reference: Nizhny Novgorod, 2006
Keywords: ecological monitoring, security, forage/fodder, food products of animal origin, food products of plant origin, agriculture, mushrooms, berries, Russia
Abstract: The purpose of this study; to research and implement the environmental assessment of radioactive substances in animal fodder, food products of plant and animal origin in areas of large cities (St. Petersburg and the Leningrad region, Volgograd, Nizhny Novgorod); to study the general regularities of radiation situation formation in the sphere of agricultural production and improve the system of environmental supervision over the quality and safety of mushrooms and berries shipped to food markets in seperate regions of the Russian Federation.
URL:http://www.dissercat.com/content/ekologicheskii-monitoring-bezopasnosti-kormov-produktov-zhivotnogo-i-rastitelnogo-proiskhozh
Title: Radioecological situation in the forest ecosystems of the Ryazan region, contaminated as a result of the accident at the Chernobyl nuclear power plant
Author: Kononova, Galina Alexandrovna
Reference: Moscow, 2004
Keywords: Ryazan region, forest vegetation, radionuclide migration, cesium-137, ecosystem, mushrooms
Abstract: The main purpose of the work was to study the radiological situation in the forest ecosystems of the Ryazan region contaminated by radionuclides due to the accident at the Chernobyl nuclear power plant, to determine the levels of cesium in the timber and non-timber forest resources, to assess their compliance with sanitary and hygienic regulations.
URL:http://www.dissercat.com/content/radioekologicheskaya-obstanovka-v-lesnykh-ekosistemakh-ryazanskoi-oblasti-zagryaznennykh-rad
Author: Dementyev Dmitry V., Bolsunovsky Alexander Ya.
Reference: Journal of Siberian Federal University
ISSN: 1997-1389
DOI: 579.5:539.752+577(T2-575):582.16
Keywords: radionuclides; transfer factor; mushrooms; shrubs
Abstract: The study addresses accumulation of radionuclides by mushrooms and berry shrubs from the forest soil in the area around the Mining-and-Chemical Combine (the Krasnoyarskii Krai, Russia). The Suillus granulatus and S. luteus mushrooms have been found to be the best bioindicators in this area. The level of 137Cs concentration in these species can reach 10 kBq/kg dry mass. The 137Cs transfer factor (TF) by the mushrooms varies 5-fold among the sites that receive radionuclides from different sources. The level of radionuclide activities accumulated by berry shrubs is 2-3 orders of magnitude lower than the activities accumulated by mushrooms. Based on the calculated TFs, the distribution of 137Cs and 60Co among the parts of these shrubs is as follows: branches
URL: http://journal.sfu-kras.ru/en/article/1460/178
Author: Ivanov D.M., Efremova M.A.
Reference: Bulletin of St. Petersbourg University: Biology, 2012
ISSN: 1025-8604
DOI: 582.287.23:574
Keywords: BIRCH MUSHROOMS, ASPEN MUSHROOMS, HIBINY, ARTIFI CIAL AND NATURAL RADIOISOTOPES, ACCUMULATION FACTOR, 137cs, 40k
Abstract: The article reveals that concentration of 137Cs and other radioisotopes in the fungal fruit bodies of the Leccinum genus collected in the area of Hibiny Mountains is within the limits of the admissible values. The accumulation factors of 137Cs and 40К in the fungal fruit bodies depend on soil acidity. Changes in soil рНН2О from 5,40 up to 7,33 cause a decrease of the accumulation factors of radioisotopes in fungi by more than 7 times.
URL: http://elibrary.ru/item.asp?id=17929070
