烟台航空口岸放射性超标物品的检测与分析

    张红生1，陆地2，曲志勇2，张宏伟1，任义广2

    1.烟台出入境检验检疫局机场办事处，山东 烟台264000；2.烟台出入境检验检疫局技术中心

    摘要：目的 探讨如何有效进行航空口岸核与辐射监测工作。方法采用放射性检测仪器对出入境人员和行李进行放射性监测。结果从入境人员行李中检出燃油添加剂、负离子粉和汽车冷却系统添加剂3种物品放射性超标，3种物品表面0.1m处γ射线周围剂量当量率分别为3.42、6.50、4.30μSv/h，放射性核素232Th（钍-232）分别超过国家规定的豁免水平的26倍、144倍、28倍，负离子粉中的226Ra（镭-226）也超过了豁免水平的1.96倍。结论应加强对航空口岸核与辐射监管工作，防止放射性超标物品流入我国。

    关键词：放射性物品；检测；分析；航空口岸

    中图分类号： R144　文献标识码： B

    Detection and analysis on excessive-radiationitems at

    Yantai Airport

    ZHANG Hong-sheng*, LU Di, QU Zhi-yong, ZHANGHong-wei, REN Yi-guang

    *Yantai Entry-exit Inspection and QuarantineBureau, Yantai, Shandong 264000, China

    Abstract:   Objective  To study effective ways of monitoring nuclear and radiation atairport.  Methods   The radiation detectionequipments were used for radiological monitoring among travellersand baggage.  Results   A kind of three radioactiveitems detected were: Fuel additives, Negative ion powder andAutomobile cooling system additives. ambient dose equivalentrates*(10) at 0.1m distance from the sample surface were 3.42、6.50、4.30 μSv/h, respectively, and 232Th specific activity were 26times, 144 times and 28 times above the exemption level,respectively.   Conclusions   Monitoring andmanagement on nuclear and radiation at airports should beintensified so as to prevent the entry excessive-radiationitems.

    Key words:   Radioactive items;Monitoring; Airports