当前位置: 首页 > 文章 > 云南栽培与野生巨大口蘑中放射性核素的活度浓度测量 食品科学 2015,36 (20) 198-201
Position: Home > Articles > Determination of Radionuclides in Cultivated and Wild Macrocybe gigantea Mushrooms in Yunnan FOOD SCIENCE 2015,36 (20) 198-201

云南栽培与野生巨大口蘑中放射性核素的活度浓度测量

作  者:
张霁;Anna (S)LIWI(N)SKA;Tamara ZALEWSKA;Jerzy FALANDYSZ;王元忠
单  位:
气象与水管理研究所;格但斯克大学;云南省农业科学院药用植物研究所
关键词:
食用菌;高纯锗伽马能谱仪;放射性活度;137Cs
摘  要:
采用高纯锗伽马能谱仪测量云南栽培与野生巨大口蘑中人工放射性核素137Cs和天然放射性核素40K、226Ra、214Bi、214Pb的活度浓度。结果显示,137Cs、40K、226Ra、214Bi、214Pb活度浓度最高值以干质量计,在2011年样品菌盖中分别为小于6.1、821、小于66、140、145 Bq/kg,在菌柄中分别为6.7、926、小于50、16、27 Bq/kg;在2012年样品菌盖中分别为13、3 323、79、82、85 Bq/kg,在菌柄中分别为6.6、1 194、127、31、39 Bq/kg;在2013年样品菌盖中分别为11、1 417、92、14、32 Bq/kg,在菌柄中分别为7.9、1 139、小于58、19、27 Bq/kg。样品中137Cs活度浓度远低于国家限量标准及欧洲与日本等受放射性污染地区真菌的活度浓度,40K、226Ra、214Bi、214Pb活度浓度处于正常水平。表明产于云南的巨大口蘑未受到137Cs放射性污染,食用无核辐射安全风险。
译  名:
Determination of Radionuclides in Cultivated and Wild Macrocybe gigantea Mushrooms in Yunnan
作  者:
ZHANG Ji;Anna ?LIWI?SKA;Tamara ZALEWSKA;Jerzy FALANDYSZ;WANG Yuanzhong;Institute of Medicinal Plants, Yunnan Academy of Agricultural Sciences;Institute of Meteorology and Water Management;University of Gdańsk;
关键词:
edible mushroom;;high-purity germanium γ spectrometer;;radioactivity;;137Cs
摘  要:
In this study, a high-purity germanium γ spectrometer was employed to determine the activities of artificial radionuclide 137 Cs and natural radionuclides 40 K, 226 Ra, 214 Bi and 214 Pb in fruiting bodies of cultivated and wild Macrocybe gigantea collected in Yunnan, China. The results showed that for the samples collected in 2011, the maximum concentrations of 137 Cs, 40 K, 226 Ra, 214 Bi and 214 Pb were < 6.1, 821, < 66, 140 and 145 Bq/kg dry weight(dw) in caps, and 6.7, 926, < 50, 16 and 27 Bq/kg in stipes, respectively. For the samples collected in 2012, the values of 137 Cs, 40 K, 226 Ra, 214 Bi and 214 Pb were 13, 3 323, 79, 82 and 85 Bq/kg in caps, and 6.6, 1 194, 127, 31 and 39 Bq/kg in stipes, respectively. For the samples collected in 2013, the values of 137 Cs, 40 K, 226 Ra, 214 Bi and 214 Pb were 11, 1 417, 92, 14 and 32 Bq/kg in caps, and 7.9, 1 139, < 58, 19 and 27 Bq/kg dw in stipes, respectively. The concentrations of 137 Cs in M. gigantea were much lower than the maximal allowable concentrations of radionuclides in foods as well as the concentrations in fungi collected from contaminated areas in some European countries and Japan. The concentrations of natural radionuclides in M. gigantea were at the normal levels. It is concluded that M. gigantea collected from Yunnan is not contaminated by radiocesium and therefore could be consumed safely without any risk of radiation exposure.

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