春季黄海及东海悬浮颗粒物中某些地球化学组分的分布特征、来源及其影响因素的研究

Some Geochemical Compositions of SPM and Its Impacting Factors in the Yellow Sea and East China Sea in Spring

测定东、黄海部分典型站位的悬浮颗粒物中金属元素Al,Ti,Fe,Mn,Ba,Cu,V及颗粒态P的含量,并结合其他相关要素,初步探讨该海域悬浮颗粒物的生物地球化学组成及其来源。研究发现,Ba,V,Cu与陆源元素铝、钛有很好的相关性,陆源输入对研究区域的金属分布有较大影响。归一化后的Cu和V表现为近岸低、外海高,表层高、底层低的分布特征,与P,POC的分布相似;对航次样品与黄河、长江、大洋钙质软泥等物源进行聚类分析,结果表明位于长江口的E4站样品与长江源、黄河源归为一类,而其他站位均不同程度地表现出生源影响。

The concentrations of Al,Fe,Ti,Mn,Cu,V,Ba and P in the suspended particulate matter in the Yellow Sea and East China Sea are presented in this paper.Combined with other related parameters,the geochemical compositions and sources of suspended particulate matter in the study area are discussed.The re- sults show that there existed good correlations between the concentrations of Ba,V,Cu and terrigenous ele- ments Al and Ti,which suggested that terrigenous transport had a great impact on the distribution of elements in the study area.Normalized by the concentration of Al,the distributions of Cu and V showed the typical fea- ture of being high in the coastal area and low in the middle shelf;high in the surface layer and low in the bot- tom layer,which is similar to the contents of P and POC.To identify the source impact,we classified the sam- ples with the surface sediments from the Changjiang and Huanghe Rivers and the carbonate sediment of the open ocean by the concentrations of some trace elements(Ti,Fe,V,Cu,Al and Ba).The results show that samples from station E4 near the Changjiang Estuary could be classified as Changjiang and Huanghe sediments, while the samples from the other stations show different extents of biogenic impacts.