elemental mercury Articles
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Mercury in fish: a critical examination of gold mining and human contamination in Ghana
This study examines the knowledge of miners, fishermen, fish sellers, and fish buyers regarding the linkages between elemental mercury, methylmercury, fish consumption, and health risks in and around mining areas in Ghana. While findings suggest that a clear grasp of the impacts of mercury on human health is lacking, few potentially polluted fish are consumed in the mining areas. Most customers ...
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Technical Challenges of Continuous Mercury Emissions Monitoring
Many pollutants such as CO2, NOx and SO2 have been monitored continuously already for decades. In the last years the awareness for the need to measure mercury has also grown, and continuous mercury monitoring is becoming more and more relevant. Especially industries burning coal, oil or waste, share the responsibility to monitor their mercury emissions. All measuring techniques need to be able ...
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Mercury Analysis
Characteristics of Mercury What is Mercury? Mercury is a naturally occurring silver-colored metallic element noted for its occurrence as a liquid at room temperature and toxic to living organisms. This silvery, opaque liquid metal is very dense, yet has a high surface tension that causes it to form tiny perfect spheres in the pores of the rocks it is found in. It is designated with the chemical ...
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Estimation and Mapping of Wet and Dry Mercury Deposition Across Northeastern North America
Whereas many ecosystem characteristics and processes influence mercury accumulation in higher trophic-level organisms, the mercury flux from the atmosphere to a lake and its watershed is a likely factor in potential risk to biota. Atmospheric deposition clearly affects mercury accumulation in soils and lake sediments. Thus, knowledge of spatial patterns in atmospheric deposition may provide ...
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Surface Decontamination of Mercury (elemental) by DeconGel 1101
Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, porcelain tile, composite tile (unwaxed), linoleum tile, and concrete surfaces contaminated with mercury (elemental) was performed with Mercury Vapor Analysis Sensor (Mercury Tracker 3000) according to Environmental Protection Agency (EPA) SW-846 Method: 7471B: "Mercury in Solid or Semisolid Waste ...
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Mercury Detection
What is Mercury? Mercury is a neurotoxin. Mercury is a naturally-occurring chemical element found in rock in the earth’s crust, including in deposits of coal. On the periodic table, it has the symbol “Hg” and its atomic number is 80. It exists in several forms: elemental (metallic) mercury, inorganic mercury compounds, and methylmercury and other organic compounds. ...
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Mercury Policy and Science in Northeastern North America: The Mercury Action Plan of the New England Governors and Eastern Canadian Premiers
In June 1998 the New England Governors and Eastern Canadian Premiers (NEG--ECP) adopted a comprehensive regional Mercury Action Plan (MAP) with aggressive emission reduction and pollution prevention goals for the New England States, the Atlantic Provinces and Quebec. New Jersey and New York have also been active participants. The NEG--ECP MAP was motivated by, and based on, extensive data ...
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VaCure Mercury stabilisation by Mobile Units
For metallic mercury separated from various different waste streams Spent catalyst from the oil & gas industry, spent activated carbon, residues from former chlorine-alkali production, drilling wastes, fluorescent lamps powder. They all have one thing in common: Elemental mercury is separated during thermal treatment. econ industries´ competence to provide solutions to deal with various ...
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EPA: Mercury merits attention
The U.S. Environmental Protection Agency (EPA) continues to implement reporting requirements pertinent to the supply, use and trade of mercury in the United States. This column provides more information and a closer look into the EPA’s October 2017 proposed rule. The 2016 amendments to the Toxic Substances Control Act (TSCA) call for the EPA to establish periodic mercury reporting ...
By Acta Group
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Trace elements - controlling emissions from coal combustion
International and national legislation is increasingly being applied to trace element emissions. Although emissions have decreased for a variety of reasons in many developed countries, continued use of coal and more successful control strategies in other sectors mean that coal combustion is still a relatively important source of some trace elements, especially mercury. Existing pollution control ...
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Surface Decontamination of Mercury Compounds (Mercury(II) Oxide (HgO)) by DeconGel 1101
Abstract Surface decontamination efficacy determination of DeconGel™ 1101 on stainless steel, carbon steel, and concrete surfaces contaminated with mercury compounds (mercury(ll) oxide (HgO)) was performed with ICP-OES (Inductively Coupled Plasma-Optical Emission Spectroscopy) according to Environmental Protection Agency (EPA) SW-846 Methods 3005A (sampling) and 6010C (analysis). ...
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How to Monitor Mercury Emissions
In recent years, mercury levels in the environment and in the food chain have risen substantially mainly due to human activities. As a long-range pollutant it can affect areas located thousands of kilometers away from its original source of emission. It’s no wonder then that the regulatory pressure to monitor mercury emissions grows stronger. Before diving into the analysis techniques and ...
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Mercury speciation and distribution in a 660-megawatt utility boiler in Taiwan firing bituminous coals
Mercury speciation and distribution in a 660-MW tangential-fired utility boiler in Taiwan burning Australian and Chinese bituminous coal blends was investigated. Flue gases were simultaneously sampled at the selective catalytic reduction (SCR) inlet, the SCR outlet, the electrostatic precipitator (ESP) outlet, and the stack. Samplings of coal, lime, bottom ash/slag, fly ash, and gypsum slurry ...
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Overview of mercury control in coal-fired power plants
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg0) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg0 to ionic mercury (Hg2+) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the surface ...
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Mercurycontamination detection in industrial premises
Summary Environmental pressures and subsequent legislation to control hazardous substances have seen a sharp decline in the use of mercury, although it remains an important chemical in many industrial processes and a wide range of products. This ongoing use and historic prevalence means that mercury contamination represents a significant hazard during decommissioning, demolition, repurposing or ...
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The application of Flow Injection Technology to automating cold vapor MERCURY analyses
This document describes the application of flow injection technology to cold vapor mercury analyses. It can be obtained from PerkinElmer by requesting method number ENVA-100. Appendices 1 and 2 show letters from the US EPA indicating acceptability through the Alternate Test Program for both drinking water and wastewater sample analysis. 1.0 Scope and Application 1.1 This method measures total ...
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Simultaneous determination of trace lead and cadmium in water samples by adsorptive stripping voltammetry using gallic acid as a selective chelating agent
This work describes a procedure for the simultaneous determination of cadmium and lead in some food and water samples using an adsorptive stripping voltammetric method. The method is based on the adsorptive accumulation of 2,3,4-trihydroxybenzoic acid (gallic acid (GA)) complexes of these elements onto a hanging mercury drop electrode, followed by the reduction of the adsorbed species. ...
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Tekran instruments—monitoring around the world
Tekran provides trace-level mercury analytical and monitoring technology for a variety of applications including laboratory-based sample analysis, continuous point-source emissions and ambient air monitoring. This article focuses on and highlights the results of an application of Tekran’s Ambient Air Mercury Speciation System. In contrast to most other heavy metals, mercury (Hg) and ...
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Optimization of adsorption process parameters by response surface methodology for hexavalent chromium removal from aqueous solutions using Annona reticulata Linn peel microparticles
Fruit peel microparticles of Annona reticulata Linn were used as biosorbent for the sequestration of hexavalent chromium (CR(VI)). Characterization of the biosorbent was done using scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDXS), Fourier transfer infrared spectroscopy (FTIR), gas chromatography-mass spectrometry (GCMS), carbon, hydrogen, nitrogen and sulphur ...
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Control of Mercury Emissions from Coal-fired Electric Utility Boilers
During combustion, the mercury (Hg) in coal is volatilized and converted to elemental mercury (Hg°) vapor in the high temperature regions of coal-fired boilers. As the flue gas is cooled, a series of complex reactions begin to convert Hg° to ionic mercury (Hg2T) compounds and/or Hg compounds (Hgp) that are in a solid-phase at flue gas cleaning temperatures or Hg that is adsorbed onto the ...
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