摘要
本次研究重点考察了自2009年7月至2010年1月珠江磨刀门河口水域中水体微表层、表层、底层三个层面的八种可溶性重金属(Cu,Zn,Fe,Mn,Cd,Cr,Ni,Co)的分布情况及其在不同时期的变化情况。结果表明重金属在水体中的含量主要受水体的盐度、pH、水温等物理化学性质以及季节性变化的影响。同时,监测数据反映出底层水体中的重金属含量明显高于微表层和表层水体中的重金属含量,并发现微表层的重金属含量由于水体的富集作用略高于表层水体的重金属含量。本次研究中所有采样地点的平均富集指数为1.631,说明微表层对重金属有富集作用。
The investigation of estuary Modaomen at the Pearl River focused on the change of eight dissolved heavy metals（Cu,Zn,Fe,Mn,Cd,Cr,Ni and Co） concentrations at three different water layers including water micro-surface layer,surface layer and bottom layer during the sampling period-from 30th July,2009 to 23rd January,2010.The result showed that the concentrations of dissolved heavy metals in the water body were influenced by physical-chemical water properties such as salinity,pH value,water temperature and seasonal changes.Meanwhile,the monitoring data has shown that the concentrations of heavy metals at the bottom layer were obviously higher than that at the surface layer and micro-surface layer.Furthermore,the results showed that the concentrations of heavy metals in the micro-surface layer were slightly higher than that in the surface layer due to the effect of enrichment.The average enrichment factor of all sampling sites for micro-surface layer is 1.631 which shows that there is strong enrichment at the micro-surface layer.
出处
《广东化工》
CAS
2013年第13期47-48,共2页
Guangdong Chemical Industry
基金
广东省分析测试技术公共实验室
关键词
磨刀门
重金属
微表层
富集作用
enrichment
heavy metal
Modaomen estuary
micro-surface layer
