中文摘要：

为完善沉积物中重金属污染的环境磁学监测方法,研究沉积物磁性参数与磁性矿物吸附的重金属之间的关系,在启东潮滩设置样点,提取沉积物磁性矿物,测试磁性矿物中的重金属Cd、Cr、Cu、Ni、Pb和Zn的含量、环境磁学参数及粒度,并做了相应的污染评价。结果表明：启东沉积物中的重金属与磁性矿物中的重金属含量具有一致的行为;根据污染负荷指数法,启东潮滩沉积物重金属总体污染较为严重;启东的磁性矿物以假单畴——较粗的多畴晶粒为主,亚铁磁性矿物主导了样品的磁性特征,其中的超顺磁物质含量较少;χARM、χARM/χ和χARM/SIRM与部分重金属表现出显著相关性,可以作为沉积物重金属含量快速检测的代用指标。

英文摘要：

The study aimed at improving environmental magnetism monitoring methods of heavy metal pollution in sediments,and establishing the relationship between magnetic parameters and heavy metals adsorbed on the magnetic matierals. Sampling sites were set in Qidong tidal flat. The magnetic minerals were extracted from sediments to measure the contents of heavy metals including Cd,Cr,Cu,Ni,Pb,Zn,the parameters of environmental magnetism and granularity,and the pollution evaluation was made. Results showed heavy metals in both sediments and magnetic minerals had the same behavior. Overall heavy metal pollution in sediments of Qidong tidal flat was relatively serious according to the pollution load index method. Magnetic minerals were mainly pseudo single domain（PSD） and multi-domain（MD）,ferrous magnetic mineral dominated the magnetic characteristics of samples and the contents of the super paramagnetic materials were little.χ_（ARM）,χ_（ARM）/ χ and χ_（ARM）/SIRM showed significant correlation with some heavy metals,so they could be served as a substitute index for rapid detection of contents of heavy metals in sediments.