Using Isotope Technology for Surface Water Environment Research in Southern Hanoi
- 1 Institute for Nuclear Science and Technology, Hanoi, Vietnam
- 2 Institute for Nuclear Science and Technology, Hanoi, Vietnam
- 3 Institute for Nuclear Science and Technology, Hanoi, Vietnam
- 4 Institute for Nuclear Science and Technology, Hanoi, Vietnam
- 5 Vinh University, Vinh, Vietnam
- 6 Institute for Nuclear Science and Technology, Hanoi, Vietnam
- 7 Institute for Nuclear Science and Technology, Hanoi, Vietnam
Abstract
The surface water in the southern of Hanoi capital is researched by identifying δ 2 H and δ 18 O stable isotopes together with EC, DO, BOD 5 , COD, TSS. Surface water samples for studying include the Red river, Nhue river and Kim Nguu river, Thanh Nhan lake, Yen So lake and Van Quan lake were collected in the dry season (April) and the rainy season (August) in 2015. The stable isotope analysis results showed that the δ 18 O values is a range from - 42.53 ‰ to - 64.05 ‰ and, the δ 2 H values is the range from -5.09 ‰ to -8.79 ‰ under global meteoric waterline (in the water vapor region). The δ 2 H results of the rivers and lakes in the dry season are more negative than the rainy season with a small difference. The δ 18 O results of lakes in the dry season are more negative than the rainy season, but the δ 18 O results of river in the dry season are more positive than the rainy season. The results of the EC, BOD, COD, DO, TSS analysis showed that surface water environment has changed clearly in the two seasons and the contamination level in the dry season is usually higher than the rainy season. The lakes and rivers strongly influenced by human activities led to seriously pollution are Van Quan lake and Yen So lake, Nhue river and Kim Nguu river.
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