湛江口岸进出口水产品的放射性监测分析.pdf

第7卷第6期
食品安全质量检测学报
lol. 7 Na. 6
2016年6月
Journal of Food Safety and Quality
湛江口岸进出口水产品的放射性监测分析
徐金龙"美星林2,王浪,张娜,陈飞,吴永盛,黄武
(1.湛江出入境检验检疫局,湛氵江:524022.广东出人境检验检疫技术中心,广州510623)
摘要:目的应用Na(m)低本底ッ谐仪和高纯锗γ谱仪监测水产品中放射性核素的方法对湛氵汇口岸进出
水产品中的核污染情况进行监测。方法采用3种方法分别得到样品中11、13cs、"3Cs3种核素的比活度,并
对待测样品进行特定时期監控。方法1:样品烘干、切片直接进样到Nal(m)低本底?谱仪;方法2:样品烘干
经儆波灰化系统灰化后进样到Nal(T)低本底y谱仪;方法3:样品烘干、经徽波灰化后进样到高纯γ谱仪。
结果方法1监测2011~2013年自日本进口的19批水产品,其监测结果均在检测限以下(检测限均为10Bq/kg)
方法2监测2014年自日本进口5批次水产品,其监測结果均在检測限以下(检测限均为Q.5Bqkg);方法3监狈
2015年进出口水产品共13批次,其监测结果与本底值相当(1、cs、3"Cs空白本底值为3 mbq/ke)结论利
用微波灰化进榉到高纯锗γ谱仪对水产品3种核素的检测效果最好。通过对湛江口岸近5年来进出口水产品放
射性核素的监测分析,尚未发现受放射性核素污染的水产品。
关键词:水产品;放射性;γ辐射剂量率
Radioactive monitoring of import and export aquatic products at
Zhanjiang port
XU Jin-long ,XI Xing-lin, WANG Lang ZHANG Na, CHEN Fci
WU Yong-sheng HUANG Wu
hanjiang Entry-exit inspection and Quarantine Bureau, Zhanjiang 524022, China
2 Guangdong Entry-exit Inspection and uarantine Technology Center, Guangzhou 510623, China
ABSTRACT: Objective To monitor the radionuclide pollution situation in aquatic products imported and exported
by Zhanjiang port by NAI(TI)low background y spectrometer and HPGE y spectroscopy instrument. Methods The
specific activitics of3 kinds of radionuclides including, Sands n samples were determined by 3 kinds of
detection methods, and samples were monitored during a particular period. The first method was as follows: samples
were dried, sliced and directly injected into Nal(T)low background spectrometer; the second method was as
follows: samples were dried, and processed by microwave ashing system and then injected into Nal()low
background y spectrometer; the third method was as follows: samples were dried and processed by microwave ashing
system and then injected into HPGE spectroscopy instrument. Results The monitoring results of 19 batches of
aquatic products imported from Japan in 20 1 1-2013 by the first method were below the detection limit of 1O Bq/kg
The monitoring results of 5 batches of aquatic products imported from Japan in 2014 by the second method were
below the detection limit of 0.5 Bq/kg. The monitoring results of 13 batches of aquatic products in 2015 by the third
基金项目:滋江市科技计划项日(2013A303)
Fund: Supported by the Zhanjiang City Science and Technology Project (2013A303)
通讯作者:徐金龙,硬士,高鉍丁程师,主要研究方向为化学分析和食品放射性检测。E- mail: xujinlongccc(@l63.om
*Corresponding author XU Jin-long, Senior En, Technical n r of Zhanjiang Entry-exit Inspection& Quarantine Bureau, No. Renmin
Road,Zhanjiang524022,China.E-mnail:xujinlongccc(@163.com
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