孔石莼分泌物对混合重金属在牙鲆组织中蓄积的影响  

Effects of Excretion of Ulva pertusa in Seawater on Accumulation of Mixed Heavy Metals in Tissues of Paralichthys olivaceus

作　　者：吕景才[1] 徐海生[1] 赵元凤[1] 吴益春[1] 周永[1] 刘长发[1] 

机构地区：[1]大连水产学院海洋环境工程学院辽宁省省级高校水生生物学重点实验室农业部海洋水产增养殖学与生物技术重点开放实验室,大连116023

出　　处：《吉林农业大学学报》2007年第2期186-190,共5页Journal of Jilin Agricultural University

基　　金：国家自然科学基金资助项目(30271029);辽宁省教育厅科学研究计划资助(05L088)

摘　　要：研究了海水中孔石莼分泌物(总有机碳TOC)浓度对混合重金属(Cu+Pb;Cu+Cd;Cu+Pb+Cd)在牙鲆(Paralichthys olivaceus)内脏、肌肉、鳃组织蓄积的影响。结果表明:孔石莼分泌物能显著降低Cu、Pb、Cd的生物有效性;随富含孔石莼分泌物的海水TOC浓度升高,牙鲆内脏、肌肉、鳃组织Cu、Pb、Cd蓄积量均明显下降;TOC浓度变化对牙鲆各组织Cu、Pb、Cd蓄积分配均无影响,各组织重金属蓄积量顺序为内脏>鳃>肌肉。The effects of the excretion of Ulva pertusa （TOC total organic carbon）＇s concentration in the seawater on accumulation of mixed heavy metals in the tissues of viscus, muscle, gills were studied. The result indicated ： the excretion of Ulva pertusa could decrease the bioavailability of heavy metals obviously. With the increase of TOC＇s concentration, the accumulation of Cu, Pb and Cd in the tissues of viscus, muscle and gills decreased obviously. The concentration of TOC had no effect on the distribution of heavy metals＇ accumulation in the tissues of fish. The order of heavy metal accumulation in the tissues was： viscus 〉 gills 〉 muscle.

关 键 词：总有机碳(TOC) 混合重金属 牙鲆 蓄积 

分 类 号：X55[环境科学与工程—环境工程] X52