牙鲆、孔石莼分泌物对混合重金属在牙鲆组织蓄积的影响  

Effects of excretion of Ulva pertusa and Paralichthys olivaceus on the accumulation of mixture heavy metals copper, lead and cadmium in the tissues of Paralichthys olivaceus

作　　者：赵元凤[1] 徐海生[1] 吕景才[1] 吴益春[2] 周永[2] 刘长发[1] 袁健[2] 鲁博望[2] 

机构地区：[1]大连水产学院海洋环境工程学院 [2]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：《环境科学学报》2006年第11期1875-1879,共5页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金资助项目(No.30271029);辽宁省教育厅科学研究计划资助项目(No.05L088)~~

摘　　要：研究了海水中总有机碳(TOC)浓度、总有机碳种类对混合重金属(Cu+Pb、Cu+Cd、Cu+Pb+Cd)在牙鲆(Paralichthysolivaceus)内脏、肌肉、鳃组织蓄积的影响.结果表明,孔石莼分泌物、牙鲆分泌物均能降低Cu、Pb、Cd的生物有效性;当海水TOC种类相同时,随TOC浓度的升高,牙鲆的内脏、肌肉、鳃组织中Cu、Pb、Cd蓄积量均明显下降;当海水TOC浓度相近时,孔石莼分泌物比牙鲆分泌物更能降低牙鲆各组织Cu、Pb、Cd蓄积量.TOC浓度、种类的变化对牙鲆各组织中Cu、Pb、Cd蓄积分配均无影响,各组织重金属蓄积量顺序均为:内脏>鳃>肌肉.The influence of TOC＇s concentration and category in the sea water to the accumulation of mixture heavy metals in the tissues of viscus, muscle, gills was studied. The result indicated that the excretion of Ulva pertusa and Paralichthys olivaceus could decrease the bioavailability of heavy metals obviously . With the increase of TOC ＂s concentration, the accumulation of Cu, Pb, Cd in viscus, muscle, gill of Paralichthys olivaceus decreased obviously. When the concentration of TOC were similar, Ulva pertusa excretion could reduce the metal accumulation more than Paralichthys olivaceus. The concentration and category of TOC had no influence to the distribution of heavy metals accumulation in the tissues of fish. The accumulation of heavy metals in the tissues from high to low is viscus, gills and muscle.

关 键 词：总有机碳(TOC) 混合重金属 牙鲆(Paralichthys olivaceus) 蓄积 

分 类 号：X171.5[环境科学与工程—环境科学]