基于电子自旋共振(ESR)技术检测辐照玫瑰花茶  

Detection of irradiated rose tea based on electron spin resonance (ESR) technology

作　　者：赵小俊[1] 傅俊杰[1] 谭瑗瑗[1] 汪志平[1] 

机构地区：[1]浙江大学农业与生物技术学院原子核农业科学研究所/农业部核农学重点开放实验室,浙江杭州310029

出　　处：《浙江大学学报（农业与生命科学版）》2010年第6期670-673,共4页Journal of Zhejiang University:Agriculture and Life Sciences

基　　金：浙江省教育厅资助项目(N20090170)

摘　　要：研究玫瑰花茶经^(60)Co-γ射线不同剂量辐照诱导的电子自旋共振(ESR)波谱特征、辐照剂量与信号强度、贮存时间与峰值之间的相互关系.结果表明:辐照前后ESR波谱峰值有明显差异,ESR信号强度随辐照样品吸收剂量的增加而增强,随贮存时间的增加而减弱,且呈线性相关;样品在室温下保存120d,ESR信号强度虽逐渐减弱,但信号不会消失.据此可以判别区分辐照与未辐照的玫瑰花茶样品.The characteristic of ESR spectrum of rose tea irradiated by ^（60）Co-γ ray at different doses was studied.The relationship of ESR signal intensity with irradiation doses,and storage time with peak value,respectively,was also discussed.The result showed that the ESR spectrums were obviously different at the presence or absence of irradiation.The ESR signal intensity increased with the increasing of irradiation dose,but decreased with the expanding of storage time with a linear correlation.The ESR signal intensity was weakened gradually during the store at room temperature for 120 days,but the ESR signal could be still detected,which could be used to easily distinguish irradiated rose tea samples from those unirradiated.

关 键 词：玫瑰花茶 辐照 电子自旋共振(ESR) 检测 

分 类 号：S124.1[农业科学—农业基础科学]