黄冠星,陈宗宇*,孙继朝
Abstract
The present study is aimed at assessing the
water quality and discussing the hydrochemical characteristics and seasonal
variation of shallow groundwater on the aspect of metals in the eastern
Chancheng district of Foshan city, south China. Multivariate analytical methods
such as principal components analysis (PCA) and hierarchical cluster analysis
(HCA) were used in this study. The results show that 45% of groundwater in the
east-central of study area is not suitable for drinking purpose due to high
concentrations of Fe, Pb and Mn. The mean concentrations of Fe, Hg, Cu, Pb, and
Mn in dry season are higher than that in wet season. On the contrary, the mean
concentrations of Cd, Co, Zn, Ba, Cr, Mo, Ni and Al in wet season are higher
than that in dry season. PCA results show that four PCs are responsible for the
78.6% of the total hydrochemical variables in groundwater. Three groups were
generated from HCA method. Group 1 re?ects the characteristic of wet season and
the low ion exchange capacity; group 2 is mainly in?uenced by the dry season.
Reducing environment and high ion exchange capacity are responsible for group
3. The results are useful in addressing future measures in groundwater resource
management for local government.