Journal of GEOLOGY, Series B, No.47-48/2018.
Unit 7: Assessing metal Pollution of Groundwater in the Pleistocene Aquifer in Hochiminh city, Vietnam.
Trần Thị Phi Oanh 1,*, Lâm Phạm Thanh Hiền1 ,
Hồ Chí Thống2, Đậu Văn Ngô2 , Nguyễn Việt Kỳ 2
1Faculty of Environment and Natural Resource, 2Faculty of Geology and Petroleum Engineering - Ho Chi Minh City University of Technology , 268 Ly Thuong Kiet, Ward 14, 10 District, HCM City
Corresponding author: tranthiphioanh@gmail.com
Received:11/9/2018
Accepted: 27/11/2018
Abstract: Nowadays, the environmental pollution has become more and more serious, especially the pollution in groundwater of Pleistocene aquifers have been recognized and attracted many researchers’ concerns. The results of water quality monitoring from different monitoring networks such as the National Monitoring Network of the Division for Water Resources planning and Investigation for the South of Vietnam, the monitoring network of Ho Chi Minh City Department of Natural Resources and Environment, the observation network of the Saigon Water Supply Corporation’s factories, ... show that heavy metals such as copper (Cu), lead (Pb), zinc (Zn), arsenic (As), cadmium (Cd), manganese (Mn), aluminum (Al) have been appeared in the groundwaters of the Pleistocene layers. However, the content of many metals has not reached the pollution limit. In this study, we carried out surveying groundwater in Pleistocene aquifers. This research’s result is used to compare to previous result of the National Monitoring Network in Ho Chi Minh City in the period 1997-2001 and heavy metals observations from projects implemented in 2016-2017. In addition, the study also used the lithological analysis results from a number of projects to evaluate the metals supply in groundwater and heavy metals monitoring from those projects implemented in 2006-2017 showed that the appearance of Pb, Hg, Cd metals are due to the external environment’s influence. The causes of Al and Mn pollution are mainly due to geological and hydro-geological conditions and the impacts caused by heavy exploitation in groundwater from Pleistocene aquifers.
Keywords: pollution in groundwater, metals Fe, Mn, As, Pleistocen aquifer