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Critical water resources, such as groundwater, are undergoing a period of intense and global environmental change, driven by climate change, anthropogenic impacts and exploitation, and perturbations to interactions of fundamental processes that are affected by hydrological, mineralogical and biogeochemical factors. Arsenic contamination is a significant …

According to the data, lead has been found in water in parts of 92 districts in 14 states, arsenic in parts of 154 districts in 21 states and UTs, fluoride in …

Arsenic, a potent carcinogen and neurotoxin, affects over 200 million people globally. Current detection methods are laborious, expensive, and unscalable, being difficult to implement in developing regions and during crises such as COVID-19. This study attempts to determine if a relationship exists between soil's hyperspectral data and arsenic concentration using …

Heavy metal pollution is a global issue due to health risks associated with metal contamination. Although many metals are essential for life, they can be harmful to man, animal, plant and microorganisms at toxic levels. Occurrence of heavy metals in soil is mainly attributed to natural weathering of metal-rich parent material and anthropogenic activities such as …

2. Sources of heavy metal pollution. These heavy metals are found naturally on the Earth's crust since the Earth's formation. Due to the astounding increase of the use of heavy metals, it has resulted in an imminent surge of metallic substances in both the terrestrial environment and the aquatic environment [].Heavy metal pollution has emerged due to …

In the United States for the 50-year period 1950–1999, there are over 51 million person-years of exposure to waterborne arsenic at or …

Arsenic is a naturally occurring element, but long-term exposure can cause cancer in people. There has been a substantial amount of research done to address arsenic in groundwater and drinking-water supplies around the country. The USGS studies local and national sources of arsenic to help health officials better manage our water resources.

This work aims at deciphering the phylogenetic structure and role of microbial communities in relation to physicochemical characteristics in Italian arsenic-contaminated aquifer systems, and at demonstrating bacterial metabolic potential toward different arsenic species in view of their possible exploitation in water biological treatments.

Water quality and analytical methods European Pharmacopeia EP US Pharmacopeia USP Japanese Pharmacopeia JP FDA (U.S. Food and Drug Administration) Guide to Inspection of high purity water systems 21 CFR 210/211, 21 CFR Part 11, 21 CFR 177 European Commission (EG) Guide to Good Manufacturing Practice PIC/S (Pharmaceutical Inspection Convention)

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The Arsenic Econo-Quick test kit (Part No. 481298, Industrial Test Systems Inc., Rock Hill, SC, USA) was used to test a total of 777 private and public wells <60-m deep within a ~2,000-km 2 area between June and August 2015 and an additional 136 wells closer to the drilling transect in November 2015. Groundwater samples were collected after ...

Groundwater in the Bengal Basin is badly polluted by arsenic (As) which adversely affects human health. To provide low-As groundwater for As mitigation, it was sought across 235 km 2 of central West Bengal, in the western part of the basin. By drilling 76 boreholes and chemical analysis of 535 water wells, groundwater with <10 µg/L As in shallow aquifers …

The presence of arsenic and fluoride in groundwater and their impacts on human health have been reported in many countries worldwide, but little information is available on As or F− contamination in Xi'an city. This study highlights the distribution and sources of As and F− anomalies in different aquifers of Xi'an city, based on the assessment of natural background …

Release of arsenic to deep groundwater in the Mekong Delta, Vietnam, linked to pumping-induced land subsidence Laura E. Erban a, Steven M. Gorelicka,1, Howard A. Zebkerb, and Scott Fendorf Departments of aEnvironmental Earth System Science and bGeophysics, Stanford University, Stanford, CA 94305 Edited by Jerome Nriagu, University of Michigan, Ann Arbor, …

System is low-cost and simple to operate. System requires minimal operator attention (part time) during treatment runs. System can employ manual operation and is adaptable to automatic operation. The recommended empty bed contact time (EBCT) for adsorptive media systems is 3 to 10 minutes, with a median around 5.

Developed a dissertation project on the consequences of large-scale groundwater exploitation for arsenic contamination and land subsidence in the multi-aquifer system underlying the Mekong River ...

90% of all arsenic consumed in the U.S. is used in the production of CCA. • Arsenic can be a by-product of mining and smelting, and is of particular concern in old waste disposal sites (e.g., mine tailings). • In agriculture, organic arsenic is a constituent of organic herbicides and is a constituent of feed additives for poultry and swine.

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Arsenic is a widely dispersed element in the Earth's crust and exists at an average concentration of approximately 5 mg/kg. There are many possible routes …

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Arsenic is a protoplastic poison due to its effect on sulphydryl group of cells interfering with cells enzymes, cell respiration and mitosis. 55 Chronic arsenical poisoning and medicinal use of ars enic are known since long. Arsenic was used orally as Fowler's solution in tonic mixtures and in the treatment of asthma,

Interra Copper Corp. is pleased to report the result of an age dating study on mineralization from the Gail Area completed at the Earth and Atmospheric Services Department of the University of ...

1. Introduction. Arsenic (As) has carcinogenic toxicity and may endanger human health through dietary exposure (Zhao et al., 2010).If cadmium (Cd) is ingested by humans, it may damage the liver and kidneys due to long-term accumulation (Fan, 2016; Han et al., 2020).Panax notoginseng (Burk.) F. H. Chen (PN) is an herbal species in the genus Panax and family Araliaceae that is …

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The lifecycle of a gold mine. People in hard hats working underground is what often comes to mind when thinking about how gold is mined. Yet mining the ore is just one stage in a long and complex gold mining process. Long before any gold can be extracted, significant exploration and development needs to take place, both to determine, as accurately as possible, the size of the …

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Winkel, L. H. et al. Arsenic pollution of groundwater in Vietnam exacerbated by deep aquifer exploitation for more than a century. Proc. Natl Acad. Sci. 108, 1246–1251 (2011).