成都地区4种蔬菜放射性核素检测分析  

Radionuclide Detection Analysis of Four Kinds of Vegetables in Chengdu Area

作　　者：冉龙举[1] 关蕾[1] 潘兴平[1] 涂俊[1] 

机构地区：[1]成都市疾病预防控制中心,四川成都610041

出　　处：《预防医学情报杂志》2016年第4期341-343,共3页Journal of Preventive Medicine Information

摘　　要：目的调查成都地区主要时令蔬菜放射性本底概况,分析不同蔬菜对放射性核素富集能力的差异性。方法利用高纯锗γ能谱仪于2013-2015年连续3年对14个区(市)县4种蔬菜中^(238)U、^(232)Th、^(226)Ra、^(40)K、^(137)Cs进行检测。结果蔬菜中放射性核素活度由大到小为^(40)K>^(238)U>^(226)Ra,^(232)Th和^(137)Cs均未检出,4种蔬菜的^(226)Ra活度基本相当,莲花白对^(238)U的富集能力低于菠菜、白菜和青菜,对^(40)K的富集能力最高的为菠菜,其次为青菜,白菜与莲花白相近。结论成都地区蔬菜放射性核素^(40)K活度明显高于其他核素,4种蔬菜中莲花白对^(238)U的富集能力最低,菠菜对^(40)K的富集能力最高。Objective To investigate the radioactive background of major seasonal vegetables in Chengdu,and analysis the variance between different vegetables on radionuclide accumulation ability. Methods Detect the concentration of 238U、232Th、226Ra、40K、137Cs using the high purity germanium spectrometer in vegetables which were collected from 14 district in successive three years. Results Radionuclide activity of vegetables from high to low is 40K 〉238U〉226Ra,but 232Th and 137Cs has not been checked out. 226 Ra is almost the same activity in four kinds of vegetables. The radionuclide accumulation ability of cabbage is significantly lower than spinach,Chinese cabbage and green cabbage for 238 U. Spinach has the highest accumulation ability and green cabbage is higher than Chinese cabbage and cabbage for 40 K. Conclusion The radionuclide ability of 40K is significantly higher than other nuclide in vegetables of Chengdu area. The radionuclide accumulation ability of cabbage is the lowest for 238U,but spinach is the highest for 40K.

关 键 词：蔬菜 放射性核素 富集能力 

分 类 号：TS255.7[轻工技术与工程—农产品加工及贮藏工程]