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Gold miners had a number of arsenic-associated health problems including excess mortality from cancer of the lung, stomach, and respiratory tract. Miners and …
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Arsenic xide is a first-line treatment drug for acute promyelocytic leukemia, which is also effective for other kinds of leukemia. Its side effects, however, limit its clinical application ...
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2. Usage of Arsenic. The first usage of arsenic in medicine could be dated around 2500 years ago where it was mainly consumed for the improvement of breathing problems as well as to give freshness, beauty, and plumpness figures in women [].Arsenic in the form of arsenical salvarsan (arsenic containing drug) was the initial antimicrobial …
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1. Introduction. Arsenic (As), well-known as a deadly toxic substance, is a metalloid element whose chemical and physical properties are intermediate between metals and nonmetals, which is ubiquitously found in the environment such as in air, water, and soil in organic and inorganic forms [1].Generally, organic forms of As are usually considered …
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Arsenic (As) solution Arsenic stock solution (2000 mg/l) was prepared by dissolv - ing arsenic xide (As 2 O 3, Cica-Reagent, Kanto Chemi-cal Co., Inc., Tokyo, Japan) in MQ (Milli Q) water, auto claved and stored in a capped glass bottle at 4 °C (Bhakta et al. 2010, 2014). Dierent concentrations of As solutions
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suffering acid rain. Acid rain can induce various ecological conse-quences, such as water and soil acidification, forest decline, biodiversity loss, soil degradation and build-ing damage. Moreover, acid rain results in accelerated leaching of cations and potential toxic elements (Zhang et al., 2007). The H? ions in acid rain often
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Arsenic is a well-known element because of its toxicity. Humans as well as plants and animals are negatively affected by its exposure. Some countries suffer from high levels of arsenic in their tap water and soils, which is considered a primary arsenic-linked risk factor for living beings. Humans generally get exposed to arsenic by contaminated …
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The oxidative leach ing of sulfide-rich mining wastes is known as acid m ine d rainage (AMD). Under t hese con ditions, a poorly - crystalline oxyhydroxysulfate, schwertmannite [Fe 8 O 8 (OH) x ...
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Arsenic acid has a tetrahedral mole cu- ... that contribute to the oxid ation of sulfide mi nerals. ... ing those used in textile and paper industry), and metal.
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The presence of arsenic in water bodies depends on pH, the redox condition of the solution, sorption, and exchange reactions. The World Health Organization (WHO) has established a guideline value of a maximum of 10 μg/L for arsenic in drinking water.Historically, arsenic has been used in fertilizers and medicines, and as a wood …
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The mechanisms by which Pteris vittata (L.) hyperaccumulates arsenic (As) have not been fully elucidated. To investigate how P. vittata tolerates high concentrations of arsenite, we compared the toxicities of various As compounds to P. vittata and Arabidopsis thaliana (L.). The phytotoxicities of As …
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ARSENIC ACID, LIQUID may evolve very toxic gaseous arsine (AsH3) from contact with active metals, such as zinc and aluminum [Inorganic Chemicals Handbook, I, p. 175]. When heated to decomposition, it produces toxic fumes of metallic arsenic [Sax, 9th ed., p. 271]. The solution is weakly acidic and a weak oxidizing agent.
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Arsenic is widespread in the environment where it occurs combined with metals and sulfur and as secondary minerals in combination with oxygen. Its atomic structure allows it to be trivalent or pentavalent, and its properties lead to its classification as a metalloid in the periodic classification of the elements. Arsenic xide is a by-product …
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Human activities have the potential to increase arsenic concentrations in the air, water, and soil. The rate of arsenic release from sulfide minerals can be accelerated by mining activities, which expose the minerals to …
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On-Line Determination of Arsenic Species in Sea Water by Selective Hydride Generation Coupled with Inductively Coupled Plasma - Mass Spectrometry
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Urban proximity to mining areas, whose soil is rich in arsenopyrite, can generate environmental contamination with arsenic released by human action and …
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Arsenic poisoning is a global health issue affecting millions of people worldwide through environmental and occupational exposure, as well as intentional suicide and homicide attempts. Although arsenic homicides commonly receive media publicity, the primary source of arsenic toxicity to the general population is by contaminated water, …
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Arsenic (As) is naturally occurring toxic metalloid which is considered as a serious environmental and health concern. Red blood cells are the prime target for any toxicants as their population is higher in systemic circulation. High prevalence of anaemia too has been reported from arsenic contamina …
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Arsenic Acid. Name: Arsenic Acid. Formula: H 3 AsO 4. Molar Mass: 141.943. H 3 AsO 4 Molar Mass Converter. Weight: Mole: H 3 AsO 4 Molar Mass Conversion in Batch. Weight: Mole: Note: Fill in one box to get results in the other box by clicking "Calculate" button. Data may be separated by semicolon (;), space, tab, or in separated lines. ...
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ARSENIC ACID may evolve very toxic gaseous arsine (AsH3) from contact with active metals, such as zinc and aluminum [Inorganic Chemicals Handbook, I, p. 175]. When heated to decomposition, it produces toxic fumes of metallic arsenic [Sax, 9th ed., p. 271]. The solution is weakly acidic and a weak oxidizing agent.
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To gain an in-depth insight into the diversity and the distribution of genes under the particular evolutionary pressure of an arsenic-rich acid mine drainage (AMD), the genes involved in bacterial arsenic detoxification (arsB, ACR3) and arsenite oxidation (aioA) were investigated in sediment from Carnoulès (France), in parallel to the diversity …
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Researchers at the University of Arizona are working to clean up acid mine drainage that contains substantial amounts of heavy metals like arsenic and lead by sequestering the chemicals in biochar ...
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Prepared by Micheal W. George [(703) 648–4962, [email protected]] ARSENIC (Data in metric tons of contained arsenic1 unless otherwise noted) Domestic Production and Use: Arsenic xide and primary arsenic metal have not been produced in the United States since 1985. The principal use for arsenic xide was for the production of arsenic acid …
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51)HNO 3 nitric acid . 52)H 2 S hydrosulfuric acid . 53)H 3 PO 4 phosphoric acid . 54) HBrO 3 bromic acid . 55)H 2 SO 4 Þ sulfuric acid . 56) HIO hypoiodic acid . 57)H 2 SO 3 sulfurous acid . 58)HClO 4 …
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ing bioreactor with downstream iron oxidation step was tested, at a laboratory scale, with two types of real arsenic-rich AMD waters from the site of Car-noulès (France), that diered in acidity (pH 3.3 and 4.0), arsenic (As, 18 and 174 mg.L−1), and metal con-centrations. Iron remained in solution, while up to
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The occurrence of a large number of arsenic species in the environment and in biological systems makes it important to compare the relative toxicity of the diverse arsenic species.
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Two key arsenic metabolites, monomethylarsonous acid (MMAIII) and dimethylarsinous acid (DMAIII), have recently been detected in human urine. There is an increasing interest in the speciation of ...
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activity (A), SOD activity (B), APX activity (C) in Brassica napus cultivar Neelam at 30 days after growth. Plants supplied As (200 mg kg −1 soil) were exposed to SA (250 and 500 mM).
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