Co-occurrence perspective of arsenic and fluoride in the groundwater of Diphu, Assam, Northeastern India

Co-occurrence, possible origin, and health-risk assessment of arsenic and fluoride in drinking water sources in Mexico: Geographical data visualization

“…The highest exposures have been reported for India (West Bengal), Bangladesh, Nepal, Pakistan, China, Taiwan, Japan, Cambodia, Vietnam, Australia, Hungary, and Romania. In the Americas, As is mainly found in the arid and semi-arid regions of the United States, Mexico, Bolivia, Nicaragua, El Salvador, Peru, Chile, and Argentina (Chakraborti et al, 2016;Kimambo et al, 2019;Kumar et al, 2016;Shakoor et al, 2017). Exposure to F in drinking water has been reported in >25 countries.…”

“…Health problems have been associated with chronic intake of F at this concentration, however, and thus many international organizations now recommend an even lower F limit of 700 μg/L (Amalraj and Pius, 2013). As and F co-occurrence in groundwater is generally associated with volcanic rocks (Ahmad and Bhattacharya, 2019;Kumar et al, 2016;Smedley and Kinniburgh, 2002). The health impacts of this co-occurrence are less well known, and may be different than the added effects of individual exposures to As and F.…”

Comparative study on synchronous adsorption of arsenate and fluoride in aqueous solution onto MgAlFe-LDHs with different intercalating anions

“…Arsenic and uoride are contaminants present in natural water environments, and oen coexist in groundwater. Especially in some countries, such as China, 1 Mexico, 2 Pakistan, 3,4 Afghanistan, 5 India, 6 Argentina, and Chile, 7 concentrations of arsenic and uoride in groundwater in some areas are much higher than WHO's and local drinking water standards. Arsenic and uoride have harmful effects on human health and there are many toxicological studies on arsenic and uoride coexisting systems.…”

Avaliação geoquímica das águas envasadas de aquíferos cristalinos no sul e sudeste do Brasil

“…Os processos de interação rocha-água são aspectos relevantes a serem investigados para avaliação da qualidade da água para o consumo, tendo em vista que estes processos podem promover a liberação de espécies químicas nocivas à saúde humana. O principal íon liberado para as águas a partir da interação com rocha, tornando-as impróprias para o consumo humano, é o F - (CHAE et al 2006, EZAKI et al 2006, PAUWELS et al 2015, NAGARAJU et al 2016, KUMAR et al 2016, ADIMALLA et al 2017, particularmente em climas áridos. De maneira similar ao F -, o As 3+ também representa uma espécie liberada para a água por processos naturais de interação com a rocha (PETERS et al 1999, AYOTTE et al 2003, YANG et al 2012, KUMAR et al 2015.…”