紫贻贝(Mytilus edulis)不同组织对镉的生物富集及释放特征

王晓玲; 张宾; 史周荣; 俞晓雯; 罗海军

doi:10.13386/j.issn1002-0306.2015.19.012

紫贻贝(Mytilus edulis)不同组织对镉的生物富集及释放特征

1. 浙江海洋学院浙江省海产品健康危害因素关键技术研究重点实验室
2. 舟山市渔业检验检测中心

基金项目:

国家自然科学基金青年科学基金项目(31201452)；舟山市科技计划项目(2013C41015)；

详细信息

作者简介:
王晓玲(1988-),女,硕士研究生,研究方向:水产品加工及贮藏,E-mail:abcwangxiaoling@126.com。;

张宾(1981-),男,博士,副教授,研究方向:水产品加工及贮藏,E-mail:zhangbin_ouc@163.com。;

中图分类号: TS254.1
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出版历程
- 收稿日期: 2014-12-07

Bio- accumulation and release characteristic of Cd in Mytilus Edulis

Zhejiang Provincial Key Laboratory of Health Risk Factors for Seafood,Zhejiang Ocean University
Fisheries Research Institute of Zhoushan

摘要

摘要: 目的:探索紫贻贝不同器官对镉（Cd）的富集吸收及释放特征。方法:以紫贻贝为研究对象,采用静态水交换法进行染毒,原子吸收光谱检测Cd在紫贻贝不同器官中的含量变化情况。结果:富集第15 d,紫贻贝内脏团、前闭壳肌、后闭壳肌、外套膜和鳃中,Cd含量依次为145.560、11.826、28.143、22.394、66.113 mg/kg。4种器官对Cd的吸收速率常数（k）,在富集初期较高、中期有所减弱、后期再次升高;生物富集系数（BCF）随暴露Cd浓度增加而逐渐减小,且均表现为内脏团>鳃>后闭壳肌>外套膜>前闭壳肌。4种器官Cd量与富集时间之间关系,均符合Harris模型（Y=1/（a+b Xc））,拟合R2范围为0.9286⁰.9890。在释放阶段,4种器官中Cd含量均未表现出显著性下降趋势（p>0.05）。结论:紫贻贝对Cd具有较强的生物富集能力,而其自然代谢释放能力较弱,为典型Cd净积累型生物。
- 紫贻贝 /
- Cd /
- 吸收速率常数 /
- 生物富集系数 /
- 释放
Abstract: The aim of this paper was to explore the bio- accumulation and release characteristic of Cd in different organs of Mytilus Edulis. In this paper,the Cd concentrations in organs were assayed by using the method of atomic absorption spectroscopy.The results indicated that the content of Cd in visceral mass,anterior and posterior adductor muscle,mantle and gill of M.edulis were 145.56,11.826,28.143,2.394 and 66.113 mg / kg respectively,after15 day 's accumulation. The value of uptake rate constant( k) of different organs was high during the early accumulation,then was decreased during intermediate period,and increased again during the later period.While,the bio- accumulation factor( BCF) was decreased with the increasing concentration of Cd in water during the whole accumulation.The order of k and BCF values were visceral mass,gill,posterior adductor muscle,mantle and anterior adductor muscle,when M.edulis were under the same exposed time.Correlation and multivariate analysis showed a significant time- dependent relationship between the accumulated content of Cd( Y) and the exposed time( X),with R2= 0.9286 ~ 0.9890 values of Harris model( Y = 1 /( a + b Xc). However,the content of Cd in four organs of M.edulis was not declined significantly during the whole releasement.The obtained results indicated that M.edulis as the net accumulated biological could not release a large amount of heavy metals.
- Mytilus edulis /
- Cd /
- uptake rate constant /
- bio-accumulation factor /
- release

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