High levels of uranium in groundwater of Ulaanbaatar, Mongolia

作者：Nriagu Jerome^*; Nam Dong Ha; Ayanwola Titilayo A; Dinh Hau; Erdenechimeg Erdenebayar; Ochir Chimedsuren; Bolormaa Tsend Ayush

来源：Science of the Total Environment, 2012, 414: 722-726.

DOI：10.1016/j.scitotenv.2011.11.037

• Uranium in groundwater
• Uranium toxicity
• Nephrotoxicity
• Trace metals in groundwater, Mongolia
• Ulaanbaatar

Water samples collected from 129 wells in seven of the nine sub-divisions of Ulaanbaatar were analyzed by inductively coupled plasma mass spectrometry (ICP-MS) using Clean Lab methods. The levels of many trace elements were found to be low with the average concentrations (ranges in brackets) being 0.9 (<0.1-7.9)mu g/L for As; 7.7 (0.12-177)mu g/L for Mn; 02 (<0.05-1.9)mu g/L for Co; 16 (<0.1-686)mu g/L for Zn; 0.7 (<0.1-1.8)mu g/L for Se; <0.1 (<0.02-0.69)mu g/L for Cd; and 1.3 (<0.02-32)mu g/L for Pb. The levels of uranium were surprisingly elevated (mean, 4.6 mu g/L; range <0.01-57 mu g/L), with the values for many samples exceeding the World Health Organization's guideline of 15 mu g/L for uranium in drinking water. Local rocks and soils appear to be the natural source of the uranium. The levels of uranium in Ulaanbaatar's groundwater are in the range that has been associated with nephrotoxicity, high blood pressure, bone dysfunction and likely reproductive impairment in human populations. We consider the risk associated with drinking the groundwater with elevated levels of uranium in Ulaanbaatar to be a matter for some public health concern and conclude that the paucity of data on chronic effects of low level exposure is a risk factor for continuing the injury to many people in this city.

• 出版日期2012-1-1