Distribution and possible dietary intake of radioactive 137Cs, 40K and 226Ra with pantropical mushroom Macrocybe gigantea in SW China
PBN-AR
Instytucja
Instytut Meteorologii i Gospodarki Wodnej - Państwowy Instytut Badawczy
Informacje podstawowe
Główny język publikacji
en
Czasopismo
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
ISSN
1093-4529
EISSN
1532-4117
Wydawca
Taylor & Francis
DOI
Rok publikacji
2015
Numer zeszytu
9
Strony od-do
941-945
Numer tomu
50
Identyfikator DOI
Liczba arkuszy
0.31
Autorzy
(liczba autorów: 6)
Pozostali autorzy
+ 4
Słowa kluczowe
en
Forage
fungi
gamma emitters
macromycetes
radioactivity
radiocesium
Streszczenia
Język
en
Treść
There is scarcity of data on contamination with radiocesium (134/137Cs) of edible mushrooms from the Southwestern Asia. This study aimed to get insight into activity concentration of artificial nuclides 134/137Cs and natural 40K and 226Ra in mushrooms from Yunnan province, which is major producer in China. The specimens of pantropical mushroom Macrocybe gigantea were collected from the wild and from a farm across Yunnan land in 2012–2013 and analyzed using gamma spectrometry with hyperpure germanium coaxial detector (HPGe). M. gigantea showed low activity concentrations of 137Cs (median value for dehydrated caps was 4.5 Bq kg−1 and 5.4 Bq kg−1 for stipes) while 134Cs was not detected. Natural radionuclide 40K showed 2–3 orders of magnitude greater activity concentration compared to artificial 137Cs in M. gigantea. The activity concentrations of 226Ra from uranium and radium decay series for most of the consignments of M. gigantea examined were below the method's limit of detection. The nominal effective dose equivalent for the Yunnan people from the dietary intake of 137Cs was assessed to be below 0.01 μSv per annum on the average, and that from 40K to be below 0.1 μSv per annum. Data available for the first time on activity concentrations of 137Cs in wild-grown saprobic mushroom from this region of Asia suggest low pollution with radiocesium from fallout there. Hence, the likely health risks from intake of 137Cs from cooked M. gigantea are in practice of mushrooms absent for human consumers there. Because of abundance of mushrooms in Yunnan and high significance of the region as producer and exporter a wider study using many species is necessary to fill a gap on possible radioactive contamination and risk to mushroom consumers.
Cechy publikacji
ORIGINAL_ARTICLE
Inne
System-identifier
623860
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