摘要
笔者在本研究中主要测定了湄洲湾海域12种海鱼鱼体中二噁英类(PCDD/Fs)的残留水平,并通过暴露量计算初步分析了其可能对人体产生的危害。研究发现鱼体内总PCDD/Fs的含量平均值为9.68 pg/g(以湿重计),含量受鱼类品种影响较大,秋刀鱼的总PCDD/Fs含量最高,梭鱼最低,变化范围为2.84-20.61 pg/g(湿重)。总PCDD/Fs的分布特征在不同品种的鱼类中大致相同,主要以OCDF和1,2,3,4,6,7,8-Hp CDF为主;鱼体中脂肪含量也可能影响PCDD/Fs在鱼类中的累积性。不同鱼种中WHO·TEQs(毒性当量)在0.26-2.18pg/g(湿重)。计算结果表明,湄洲湾地区海鱼食用人群PCDD/Fs的暴露量低于WHO和欧盟食品委员会规定的摄入量上限,但若考虑其它渠道食物的摄入会导致PCDD/Fs的最终暴露量提高,该地区二噁英的毒性污染现状仍不容忽视。
This study mainly determined the residual levels of dioxins（PCDD/Fs） in 12 species of marine fish in the sea area of Meizhou Bay,and preliminarily analyzed the possible harm to human body through exposure calculation. The study found that the average total PCDD/Fs content in fish was 9. 68 pg/g（based on wet weight）,and the content was greatly affected by fish species. The total PCDD/Fs content of Pacific saury was the highest,and that of the barracuda was the lowest,varying between 2. 84-20. 61 pg/g（wet weight）. The distribution characteristics of total PCDD/Fs are approximately the same in different fish species,mainly OCDF and 1,2,3,4,6,7,8-Hp CDF; fat content in fish may also affect PCDD/Fs accumulation in fish. WHO·TEQs in different fish species ranged from 0. 26 to 2. 18 pg/g（wet weight）. The calculation results show that the exposure of PCDD/Fs in marine fish population in Meizhou Bay area is lower than the upper limit of intake of WHO and EU Food and Agriculture Commission,but if the food intake of other channels is taken into account,the final exposure of PCDD/Fs will be caused. to improve,and the current status of dioxin pollution in the region can not be ignored.
作者
蔡俊秀
CAI Jun-xiu(Meizhouwan Vocational and Technical College,Fujian 351100,China)
出处
《武汉轻工大学学报》
2018年第3期25-31,共7页
Journal of Wuhan Polytechnic University
