摘要
基于松花江(吉林省部分)沉积物中4种重金属元素(Cd、Cu、Ni、Pb)总量与其形态在丰水期和平水期以及4个典型点位的分布特征,通过平衡分配法建立了松花江沉积物质量基准(SQGs),并以此评价松花江沉积物重金属生态风险,揭示重金属生态风险与其形态特征间的相关关系。结果表明,生态风险程度最高是重金属元素Cd,应重视其对水生生物的毒性影响,在平水期风险较高,在丰水期则风险偏低;4种重金属的生态风险与赋存形态之间表现出不同的相关关系。
Based on the distribution characteristics of the total and morphology of four heavy metals(Cd,Cu,Ni,Pb)in the sediments of the Songhua River(part of Jilin Province)during wet seasons and normal seasons and at four typical points,the equilibrium distribution method was used.The Songhua River Sediment Quality Standards(SQGs)were established,and the ecological risk of heavy metals in the Songhua River sediments was evaluated to reveal the correlation between the ecological risks of heavy metals and their morphological characteristics.The results show that Cd had the highest ecological risk to aquatic organisms.The risk is higher in normal seasons and lower in wet seasons.There were different relationships between the ecological risks and speciation of the four heavy metals.
作者
孙鹏
张理博
罗淑年
Sun peng;Zhang Libo;Luo Shunian(Heilongjiang Beidahuang Rice Industry Group Co., Ltd., Harbin 150000, China;Jiu San Group Harbin HuiKang Food Co., Ltd., Harbin 150000, China)
出处
《环境科学与管理》
CAS
2020年第7期142-145,共4页
Environmental Science and Management
关键词
松花江
重金属
沉积物质量基准
平衡分配法
生态风险
Songhua River
heavy metals
sediment quality guidelines
equilibrium partitioning approach
ecological risk
