广东红海湾海域银杏齿喙鲸体组织中DDT含量的分布特征与污染评价  

The distribution characteristics and pollution assessment of DDTs residues in tissues of ginkgo-toothed beaked whale (Mesoplodon ginkgodens) collected from Honghai Bay,Guangdong Province,China

作　　者：刘会[1,2] 甘居利[1] 贾晓平[1] 

机构地区：[1]农业部海水养殖生态与质量控制重点开放实验室,广东省渔业生态环境重点实验室,农业部南海渔业资源环境重点野外科学观测试验站,中国水产科学研究院南海水产研究所,广东广州510300 [2]上海海洋大学海洋学院,上海201306

出　　处：《南方水产》2009年第3期15-22,共8页South China Fisheries Science

基　　金：科技部社会公益研究专项资金项目(2005DIB3J021);中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院南海水产研究所)资助项目(2007ZD04);广东省科技兴海重大项目(A200099E01)

摘　　要：采用Agilent6890N型气相色谱仪,DB-1701型毛细管气相色谱柱(30m×0.32mm×0.25μm)和63Ni放射源-μECD检测器,测定了搁浅于广东红海湾的银杏齿喙鲸(Mesoplodon ginkgodens)的8种组织中∑DDT(pp′-DDT、pp′-DDE、pp′-DDD和op-DDT)含量。结果表明,该鲸不同组织中的∑DDT含量范围为15.2～177.1μg.kg-1(湿重),其高低顺序为鲸脂>肝脏>胃>心脏>肾脏>肌肉>胰>肺,不同组织中的∑DDT含量与其组织中的脂肪含量呈显著正相关(R=0.9968,P<0.01)。与国外文献报道的数据比较,所分析的鲸脂中∑DDT含量相对较低,尚未达到造成生理危害的水平。DDE/∑DDT和pp′-DDT/op-DDT的平均比值分别为0.27和5.7,据此推测可能有新的DDT输入此鲸栖息海域,主要来源可能是含DDT化学品的使用和环境中残留DDT的重新释放。The residues of dichloro-diphenyl-trichloroethane （DDTs） in tissues of ginkgo-toothed beaked whale （ Mesoplodon ginkgodens） collected from Honghai Bay, Guangdong province, China was analyzed by gas chromatography. The test system was composed of Agilent 6890 N gas chromatography, a DB-1701 capillary column （30 m ×0. 32 mm ×0. 25 μm） , and a ^63Ni micro electric capture detector. The results showed that contents of Y. DDT （pp＇-DDT, pp＇-DDE, pp＇-DDD and op-DDT） ranged from 15.2 to 177.1 μg. kg^-1 （wet weight）, and positively related to lipid content in different tissues （R = 0. 9968, P 〈 0. 01 ）. The ∑ DDT contents in tissues from high to low were blubber, liver, stomach, heart, kidney, muscle, pancreas and lung. Compared with other cetaceans in different waters, the content level of ∑ DDT in the blubber of this whale sample was relatively low and harmless. The average ratio of DDE/∑DDT, pp＇-DDT/op-DDT were equal to 0. 27 and 5.7, respectively, which indicated that DDT might be newly imported to Honghai Bay, possibly through the use of DDT-contained chemicals and the release of DDT residue from the environment.

关 键 词：DDTS 银杏齿喙鲸 红海湾 

分 类 号：X835[环境科学与工程—环境工程]