E3S Web Conf.
Volume 98, 201916th International Symposium on Water-Rock Interaction (WRI-16) and 13th International Symposium on Applied Isotope Geochemistry (1st IAGC International Conference)
|Number of page(s)||5|
|Section||Water-Rock Interaction Controlling Water Quality and Human Health Issues|
|Published online||07 June 2019|
Health Risk Assessment of Heavy Metals in Surface Water of the Lhasa River, China
College of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China
2 Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China
3 The Second Geological Brigade of the Tibet Autonomous Region Geology and Mineral Exploration and Development Bureau, Lhasa 850000, China
* Corresponding author: email@example.com
This study was performed in Lhasa River Watershed to explore the contents of heavy metals in river water and assess the health risks. The test results show that the contents of arsenic (As), chromium (Cr) and uranium (U) are relatively low, reaching the Class III of the "Environmental quality standards for surface water (GB3838-2002)". Health risk assessment demonstrates that the average total risk value is 1.79×10-5 yr-1, which is lower than the maximum acceptable level of 5.05×10-5 yr-1 recommended by USEPA. Moreover, the average value of radionuclide risk (U) is calculated to be 9.47×10-9 yr-1, which is five orders of magnitude lower than the standard value of 5.0×10-4 yr-1. Therefore, the river water in the study area causes no significant health risk to people.
© The Authors, published by EDP Sciences, 2019
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