Arsenic levels in the groundwater of Korea and the urinary excretion among contaminated area
| Autor: | Choong Ryeol Lee, Heon Kim, Jung Duck Park, Youngjo Lee, Kyung Min Lim, Kyung Soo Park, Yong-Dae Kim, Jin Ho Chung, Seong-Jin Choi, Byung-Sun Choi, Seojin Kang |
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| Rok vydání: | 2015 |
| Předmět: |
0301 basic medicine
Epidemiology chemistry.chemical_element 010501 environmental sciences Toxicology 01 natural sciences Mass Spectrometry Arsenic Excretion 03 medical and health sciences chemistry.chemical_compound Urinary excretion Republic of Korea Humans Inductively coupled plasma mass spectrometry Groundwater 0105 earth and related environmental sciences Creatinine Geography Drinking Water Public Health Environmental and Occupational Health Environmental Exposure Contamination Pollution Arsenic contamination of groundwater 030104 developmental biology chemistry Environmental chemistry Environmental science Seasons Water Pollutants Chemical Environmental Monitoring Maps as Topic |
| Zdroj: | Journal of exposure scienceenvironmental epidemiology. 26(5) |
| ISSN: | 1559-064X |
| Popis: | Drinking water is a main source of human exposure to arsenic. Hence, the determination of arsenic in groundwater is essential to assess its impact on public health. Here, we report arsenic levels in the groundwater of 722 sites covering all six major provinces of Korea. Water was sampled in two occasions (summer, 722 sites and winter, 636 sites) and the arsenic levels were measured with highly sensitive inductively coupled plasma-mass spectrometry method (limit of detection, 0.1 μg/l) to encompass the current drinking water standard (10 μg/l). Seasonal variation was negligible, but the geographical difference was prominent. Total arsenic in groundwater ranged from 0.1 to 48.4 μg/l. A 88.0-89.0% of sites were2.0 μg/l and the remaining ones generally did not exceed 10 μg/l (6.4-7.0%, 2.0-4.9 μg/l; 2.4-3.0%, 5.0-9.9 μg/l). However, some areas (1.0-9.2%) exhibited10 μg/l. Notably, urinary arsenic excretion of people around these regions was markedly higher compared with non-contaminated areas (5 μg/l) (79.7±5.2 μg/g (N=122) vs 68.4±5.4 μg/g (N=65) creatinine, P=0.052). All stratified analysis also revealed higher urinary excretion, where a statistically significant difference was noted for non-smokers (85.9±12.7 vs 54.0±6.3, P=0.030), suggesting that arsenic-contaminated groundwater may contribute to its systemic exposure. |
| Databáze: | OpenAIRE |
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