摘要
分析了2007年1月的南黄海西部调查得到的表层海水中的溶解态重金属数据资料,研究了海水中溶解态重金属的分布特征及影响机制。结果表明各溶解态重金属的空间分布大致呈现近岸海区向远岸逐渐减少的趋势;但调查海域远岸水体南部(34°N以南)溶解态重金属质量浓度整体上比中部和北部海域的略高;而近岸分布无明显规律。重金属Cu,Pb,Zn和Cd之间具有良好的正相关性,苏北站位Cu和As与盐度以及与悬浮物含量间呈相反的显著相关性。说明重金属分布除受到来自近岸污染的影响,还可能受到海水水动力学及黄海暖温高盐水舌的影响;苏北海域As的分布可能受到该海域特定的氧化还原水环境影响。
Based on the dissolved heavy metal data obtained from the surface water in the west area of the southern Yellow Sea in January 2007, the heavy metal distribution characteristics and its influencing mech- anism are analyzed. It is shown from the analysis results that the spacial distribution of the heavy metals tends to be gradually decreased from the coastal sea area to the further offshore area except that the mass concentrations in the south （i. e. south of 34°N） of the further offshore area are a little higher to be com- pared with in the central and north area of the surveyed waters. No regular features of the heavy metal dis- tribution can be found in the coastal sea area. The heavy metals such as Cu, Pb, Zn, and Cd are positively correlated with each other. As the data from the stations in North Jiangsu show, Cu or As is negatively correlated with salinity and suspended materials. Therefore it is expounded that the heavy metal distribu- tion is effected not only by the coastal pollutants but also by the hydrodynamic factors and the warm tougne with its high salinity of the Yellow Sea. In addition, the As distribution in the sea area adjacent to North Jiangsu might be possibly effected by the environments favourable for the redox.
出处
《海洋科学进展》
CAS
CSCD
北大核心
2009年第2期201-210,共10页
Advances in Marine Science
基金
我国近海海洋综合调查与评价专项课题--ST03区块水体环境调查与研究(908-01-ST03)
关键词
重金属
南黄海
盐度
悬浮物
heavy metals
the southern Yellow Sea
salinity
suspended material
