As a potential role of antimony as a confounder in human health studies related to arsenic in drinking water, tube-well water concentrations of antimony and arsenic were analysed in the Pabna region of Bangladesh by ICP-MS using USEPA method 200.8.Web
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Due to its relatively low cost compared with other equally effective technologies, aluminum or iron-based coagulation-flocculation-sedimentation (CFS) is most commonly used in drinking-water facilities for the purification of toxic elements, i.e., arsenic, which is similar to antimony in chemical behaviors and biological toxicity [32], …Web
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Arsenic and antimony occur in drinking water due to natural weathering or anthropogenic activities. There has been growing concern about their impact on health. The aim of this study was to assess ...Web
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The GFH system was a fixed-bed adsorption system that used GFH, an iron-based media, to adsorb dissolved arsenic and antimony in drinking water supplies. When the media reached its adsorption capacity, it was removed from the vessels and replaced with new media. Spent media was disposed of at a sanitary landfill after passing the Toxicity ...Web
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Arsenic and antimony occur in drinking water due to natural weathering or anthropogenic activities. There has been growing concern about their impact on health. …Web
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A National Toxicology Program (NTP) 14-day drinking water study of potassium antimony tartrate reported an increase in relative liver and kidney weights in the high dose group (females only). ... Antimony metal is a very brittle, moderately hard metal. (1) The chemical symbol for antimony is Sb, and it has an atomic weight of 121.75 g/mol. (1) ...Web
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The chemical behaviour of antimony is as complex as that of arsenic, its neighbour in the periodic table (Wiberg, 1985). It is speculated that antimony could be a natural co …Web
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Arsenic and antimony are both considered pollutants of priority interest by the European Union (Council of the European Communities, 1976) and by the Environmental Protection Agency of the United States (EPA, 1982). The World Health Organization (WHO) established, in 1993, 10 μg/L as the guideline value for arsenic in drinking water.Web
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Although antimony is similar to arsenic in chemical properties and toxicity, and a pollutant of priority interest to the USEPA and the EU, its environmental behaviors, …Web
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Many research articles have paid attention to the effective techniques for Sb removal since the 1970s. Sb is a metalloid, having properties of metal and nonmetal and existing in the environment like arsenic in two oxidation states mainly, i.e., trivalent antimony (Sb(III)) and pentavalent antimony (Sb(V)) (Shan et al., 2014).Web
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Abstract. Recent in vitro studies have suggested a potential role for antimony as a confounder in human health studies related to arsenic in drinking water. We …Web
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Introduction. Arsenic is a naturally occurring, semimetallic element widely distributed in the Earth's crust. Arsenic levels in the environment can vary by locality, and it is found in water, air, and soil. There are two general forms of arsenic: Organic arsenic compounds contain carbon. There is no relation between organic arsenic and ...Web
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0 0 0 antimony • When arsenic is present in the form As(III), pre-oxidation is necessary to convert it to the form As(V). • Reducing source water pH will increase the arsenic removal capacity of most adsorptive media. • If pH adjustment or pre-oxidation step is lost, treated water may have an arsenic spike.Web
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This lot of drugs had lower pH and osmolarity and higher concentrations of total and trivalent antimony, lead, cadmium and arsenic and the skin reaction was attributed to the heavy metal contamination . 3. Conclusions ... 1958; pp. 370–374, (Cited in Public Health Goal for Antimony in Drinking Water; Prepared by Pesticide and …Web
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Exposure to arsenic can occur by drinking water or eating foods containing trace amounts of arsenic, by breathing sawdust or smoke from wood treated with arsenic (e.g. CCA (copper chrome arsenate) treated timbers), living in areas with unusually high levels of arsenic in the rock or soil or from working in a job that involves arsenic production ...Web
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Abstract. Arsenic, Antimony, and Bismuth are members of Group V of the Periodic Table of Elements. These elements have been used for a variety of medicinal and pest control purposes over a number of centuries. They have also been used in metallic alloys and in the production of III–V semiconductors to increase electronic speeds of …Web
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Canada is proposing a risk-managed approach that would reaffirm a maximum acceptable concentration (MAC) of 0.006 mg/L (or 6 µg/L) for antimony in drinking water that was developed in 1999. …Web
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Antimony (P) 7440360: 5.6: 640: ... Refer to EPA's National Primary Drinking Water Regulations. Arsenic (P) 7440382: 0.018: 0.14: 1992: This criterion is based on carcinogenicity of 10-6 risk. Alternate risk levels may be obtained by moving the decimal point (e.g., for a risk level of 10-5, move the decimal point in the recommended criterion ...Web
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The risk of arsenic, antimony and selenium levels in groundwater to adults and children within the different study areas [residential, commercial, industrial and agricultural] was evaluated based on the risk assessment techniques proposed by the US EPA.50,51 The average amount of daily drinking water consumption was considered to …Web
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The chemical behaviour of antimony is as complex as that of arsenic, its neighbour in the periodic table (Wiberg, 1985). It is speculated that antimony could be a natural co-contaminant with arsenic in some drinking-waters (Gebel, 1999b). Soluble forms of antimony (and arsenic) tend to be quite mobile in water, whereas less soluble speciesWeb
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The occurrence of pnictogens, namely phosphorus, arsenic, and antimony, can be observed in soils, sediments and mining areas, and their coexistence requires a multifaceted approach to the design ...Web
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A 2020 study estimated that up to 200 million people wordwide are exposed to arsenic-contaminated drinking water at levels above the legal limit of 10 parts per billion set by the U.S ...Web
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By: Neil F. Gandy, & Richard P. Maas. Summary: Recent research has documented that the coal and coconut shell-based activated carbon used in granulated activated carbon (GAC) water filters often discharges significant amounts of arsenic (As) and antimony (Sb), at least when newly installed.To determine if this may translate into …Web
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For Sb, the suggested NOAEL in the subchronic drinking water study in rats was established as 6.0 mg/kg bw per day based on decreased body weight gain and reduced food and water intake. By the …Web
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Recent in vitro studies have suggested a potential role for antimony as a confounder in human health studies related to arsenic in drinking water.Web
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though there is some evidence for the carcinogenicity of certain antimony compounds by inhalation, there are no data to indicate carcinogenicity by the oral route. Arsenic1 …Web
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The form of antimony in drinking-water is a key determinant of the toxicity, and it would appear that antimony leached from antimony-containing materials would be in the form …Web
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Since the 1970s, millions of inhabitants of Asia have been chronically exposed to naturally occurring arsenic on a daily basis through the large-scale insertion of multiple shallow tubewells which were originally installed for provision of clean and safe drinking water .Antimony and arsenic are metalloids belonging to Group 15 of the …Web
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This groundwater is used by millions of people for drinking and agriculture, thus endangering their health . Artificial arsenic sources include mining, arsenic-containing pesticides ... 100 mg/L arsenic and antimony standard stock solution was prepared in our laboratory and the configuration was as following: (1) 0.1320 g of As ...Web
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Arsenic-alkali residue is a hazardous waste produced by the refining process of crude antimony in antimony smelting, and contains highly toxic sodium arsenate and a large number of residual alkali. In this study, aiming at the problems of the low recoveries and incomplete separation of arsenic and alkali, the secondary pollution of arsenic …Web
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Arsenic and antimony are elements that share many common chemical properties including occurrence in nature in the trivalent and pentavalent states. ... It is thus possible that parasites were exposed to accumulated arsenic in the liver and spleen of populations drinking arsenic-contaminated water, and became cross-resistant to …Web
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Section snippets Materials. The raw material used in this study was crude As 2 O 3 recovered from arsenic-alkali residue in an antimony smelting plant in Hunan, and its related chemical content by ICP and chemical analysis is given in Table 1. As can be seen from Table 1, the purity of crude As 2 O 3 is 93.6 wt.%, which is lower than the standard …Web
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Antimony is among a variety of metals that can be detected in the oral cavity and may be introduced as part of various dental materials . A recent study using photoactivation analysis found trace elements of antimony alongside nickel, barium, arsenic, strontium, and others in dental composites manufactured by various producers .Web
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Environmental exposure routes are through inhalation, oral ingestion by contamination, or hand-to-mouth contact (drinking water, beverages, and food) ... showed significant correlations between exposure to antimony, lead, and arsenic. This makes attributing risk to individual compounds difficult as confounding effects are very likely. ...Web
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The redox chemistry of antimony is important in the treatment and removal of antimony from drinking water. The treatment type for antimony determines whether Sb(III) or Sb(V) is better removed. Conventional treatment bench-scale studies indicate that Sb(III) is better removed than Sb(V) whereas removal through RO exhibited better …Web
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Arsenic and antimony concentrations were reduced from 18.1 and 10.8 μg/L, respectively, in source water to below 0.1 μg/L in permeate water, corresponding to a rejection rate of >99%. ... Arsenic and Antimony Removal from Drinking Water by Point-of-Entry Reverse Osmosis Coupled with Dual Plumbing Distribution U.S. EPA …Web
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Arsenic and antimony in water and wastewater: overview of removal techniques with special reference to latest advances in adsorption. J. Environ. Manag. ... Heavy metals (HMs) in drinking water have drawn worldwide attention due to their risks to public health; however, a systematic assessment of the occurrence of HMs in drinking …Web
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More information: Zhengyang Wang et al. Enhanced arsenic removal from water by mass re-equilibrium: kinetics and performance evaluation in a binary-adsorbent system, Water Research (2020).DOI: 10. ...Web
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Arsenic and antimony concentrations were reduced from 18.1 and 10.8 μg/L, respectively, in source water to below 0.1 μg/L in permeate water, corresponding to a …Web
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Recovery of arsenic, antimony and selenium from AAR, a type of smelting waste, is carried out through a four-step process (Long et al., 2020a). ... However, antimony leaching in to drinking water samples stored in good quality PET bottles is often within the prescribed limit. The decreased leaching is attributable to better quality of the pre ...Web
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