Journal
SCIENCE OF THE TOTAL ENVIRONMENT
Volume 569, Issue -, Pages 476-488Publisher
ELSEVIER
DOI: 10.1016/j.scitotenv.2016.06.166
Keywords
Heavy metals in drinking water; sources of metals; heavy metal removal; human exposure and risk; challenges in developing countries
Categories
Funding
- Deanship of Scientific Research (DSR) at King Fahd University of Petroleum & Minerals (KFUPM) [RG 1409-1]
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Heavy metals in drinking water pose a threat to human health. Populations are exposed to heavy metals primarily through water consumption, but few heavy metals can bioaccumulate in the human body (e.g., in lipids and the gastrointestinal system) and may induce cancer and other risks. To date, few thousand publications have reported various aspects of heavy metals in drinking water, including the types and quantities of metals in drinking water, their sources, factors affecting their concentrations at exposure points, human exposure, potential risks, and their removal from drinking water. Many developing countries are faced with the challenge of reducing human exposure to heavy metals, mainly due to their limited economic capacities to use advanced technologies for heavy metal removal. This paper aims to review the state of research on heavy metals in drinking water in developing countries; understand their types and variability, sources, exposure, possible health effects, and removal; and analyze the factors contributing to heavy metals in drinking water. This study identifies the current challenges in developing countries, and future research needs to reduce the levels of heavy metals in drinking water. (C) 2016 Elsevier B.V. All rights reserved.
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