| 混合暴露条件下刺参(Apostichopus japonicus)对重金属的富集与释放特征 |
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| 引用本文： | 姜会超,刘爱英,宋秀凯,刘丽娟.混合暴露条件下刺参(Apostichopus japonicus)对重金属的富集与释放特征[J].海洋与湖沼,2014,45(1):141-147. |
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| 作者姓名： | 姜会超 刘爱英 宋秀凯 刘丽娟 |
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| 作者单位： | 山东省海洋水产研究所,山东省海洋水产研究所,山东省海洋水产研究所 |
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| 基金项目： | 山东省科技发展计划项目（2009GG10009044）、烟台市科技发展计划项目(2011457)共同资助 |
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| 摘 要： | 应用双箱动力学模型模拟了刺参在Pb、Zn、Cu、Cd、Cr、Hg和As 7种重金属混合暴露条件下,呼吸树、消化道和体壁组织对重金属的生物富集与释放实验。结果表明:(1)重金属在刺参组织器官中的富集具有选择性,理论平衡状态下,As、Cd、Cr在各组织的含量分布(CAmax):呼吸树消化道体壁,Cu、Zn分布规律(CAmax):消化道呼吸树体壁,Hg、Pb分布规律(CAmax):体壁呼吸树消化道。(2)刺参对不同重金属的富集系数存在显著差异(P0.05),呼吸树组织对Cr离子富集系数最高2298.2,其次是Cu、Cd离子,其BCF均在1500以上,Hg、Pb、Zn和As离子在呼吸树中的富集系数较低。体壁对Cu离子的富集系数最高为1560.7,对As离子富集系数最低52.7。消化道对Cu离子富集系数最高6037,对As离子富集系数最低为87.9。
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| 关 键 词： | 刺参 富集 释放 重金属 双箱动力学模型 |
| 收稿时间： | 2013/3/14 0:00:00 |
| 修稿时间： | 2013/6/19 0:00:00 |
ACCUMULATION AND RELEASE OF COMMON HEAVY METALS IN APOSTICHOPUS JAPONICUS |
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| JIANG Hui-Chao,LIU Ai-Ying,SONG Xiu-Kai and LIU Li-Juan.ACCUMULATION AND RELEASE OF COMMON HEAVY METALS IN APOSTICHOPUS JAPONICUS[J].Oceanologia Et Limnologia Sinica,2014,45(1):141-147. |
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| Authors: | JIANG Hui-Chao LIU Ai-Ying SONG Xiu-Kai and LIU Li-Juan |
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| Institution: | Shandong Marine Fisheries Research Institute,Yantai 264006,China,Shandong Marine Fisheries Research Institute,Yantai 264006,China,Shandong Marine Fisheries Research Institute,Yantai 264006,China |
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| Abstract: | Kinetic parameters were evaluated for biological accumulation and release of seven heavy metals Pb, Zn, Cu, Cd, Cr, Hg and As in respiratory tree, alimentary canal and body wall of Apostichopus japonicus by using two-compartment bioconcentration model to carry out the experiment in which the A. japonicus were exposed to the water environment with seven heavy metals mixed. Heavy metal uptake rate constant (k1), extracting rate constant (k2), bioconcentration factor (BCF) and biological half-lives (B1/2), equilibrium concentration of heavy metals in vivo CAmax were obtained by non-linear curve fitting. The results showed: (1) seven heavy metals were accumulated selectively in the major organs and tissues in A. japonicus. The CAmax of As,Cd and Cr distributed in A. japonicus as follows: respiratory tree> alimentary canal > body wall; Cu and Zn: alimentary canal > respiratory tree>body wal; Hg and Pb: body wall> respiratory tree> alimentary canal. (2) Significant difference was observed among the BCFs of seven heavy metals in A. japonicas. The respiratory tree showed the strongest accumulation ablity for Cr with BCF 2298.2, followed by Cu and Cd with BCFs above 1500, and weaker accumulation ability for Hg, Pb, Zn and As. Alimentary canal and body wall both showed the strongest accumulation ability for Cu with BCFs 6037 and 1560.7 respectivily while weakest accumulation ability for As with BCFs 87.9 and 52.7 respectivily. |
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| Keywords: | Apostichopus japonicas Accumulation Release Heavy metal Two-compartment kinetic model |
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