Mercury in the Environment Articles

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Mercury stabilization takes the sting out of mercury

by econ industries GmbH  (Jun. 24, 2016)

In elementary form, mercury is a danger to humans and the environment. But chemically bound to sulfur it loses its toxicity and can be disposed safely. The process which transforms the highly toxic metal into an unproblematic red powder is called mercury stabilization. As a specialist for cleaning mercury contaminated soil and waste by vacuum ...

Critical perspectives on mercury toxicity reference values for protection of fish

by John Wiley & Sons, Ltd.  (Feb. 29, 2016)

Environmental management decisions at mercury‐contaminated sediment sites are predicated on the understanding of risks to various receptors, including fish. Toxicity reference values (TRVs) for interpreting risks to fish have been developed to assess mercury concentrations in fish or fish prey. These TRVs were systematically evaluated based on ...

Increase Mercury Vapor Detection Range by 10X

by Arizona Instrument LLC  (Jan. 25, 2016)

Vapor dilution module extends detection range of J505 from nanograms to milligrams How it works: The new 10:1 dilution module for the J505 reduces the concentration of mercury vapor in the sample stream by a factor of ten, allowing for a much higher detection limit. Rather than the standard upper detection limit of 500 µg/m3, ...

Seasonal and flow‐driven dynamics of particulate and dissolved mercury and methylmercury in a stream impacted by an industrial mercury source

by John Wiley & Sons, Ltd.  (Nov. 18, 2015)

Sediments and floodplain soils in the East Fork Poplar Creek (EFPC) watershed in Oak Ridge, TN, are contaminated with high levels of mercury (Hg) from an industrial source at the headwaters. While baseflow conditions have been monitored, concentrations of Hg and methylmercury (MeHg) during high‐flow storm events, when the stream is more ...

Measuring total mercury due to small-scale gold mining activities to determine community vulnerability in Cihonje, Central Java, Indonesia

by IWA Publishing  (Oct. 5, 2015)

This research is comparative study of gold mining and non-gold mining areas, using four community vulnerability indicators. Vulnerability indicators are exposure degree, contamination rate, chronic, and acute toxicity. Each indicator used different samples, such as wastewater from gold mining process, river water from Tajum river, human hair ...

Comparison of the CMVX-7100 Micro-Volume Workstation

by Teledyne CETAC Technologies  (Aug. 18, 2015)

Comparison of the CETAC MVX-7100 Micro-Volume Workstation with an Established Laboratory Method for the Assessment of Lead, Mercury, and Arsenic in Human Whole Blood. Conventional autosamplers used in clinical ICP-MS are largely based on the needs of non-clinical environments. Their disadvantages are numerous and include high ...

Mercury sorption by silica/carbon nanotubes and silica/activated carbon: a comparison study

by IWA Publishing  (Aug. 13, 2015)

Nanocomposites of silica incorporated with carbon nanotubes (silica/CNT) and activated carbon (silica/AC) were synthesized and characterized by scanning electron microscopy (SEM), element mapping, energy dispersive X-ray spectroscopy (EDX), thermogravimetric analyzer (TGA) and Fourier transform infrared spectroscopy (FTIR). Silica/CNT and ...

Bolderwood Campus Southampton (2) – Case Study

by Envirochem Analytical Laboratories LTD  (Aug. 13, 2015)

Project Highlights Envirochem carried out broad spectrum radiological and chemical sampling within confined spaces to ascertain the extent of residual contamination within outlet drain sediments, constructional surfaces and nearby soils. Envirochem were able to draw together many different methods of access, sampling and analytical testing ...

Total and methylmercury partitioning between colloids and true solution: From case studies in sediment overlying and pore waters to a generalized model

by John Wiley & Sons, Ltd.  (Aug. 4, 2015)

Tangential flow ultrafiltration was used to determine the partitioning of total mercury (THg) and monomethyl‐mercury (MMHg) between colloids and true solution in sediment overlying (OW) and pore waters (PW) collected in Lake Geneva (Switzerland/France), Venice lagoon (Italy), and Baihua reservoir (China). Overlying water and PW spanned ...

The role of melano‐macrophage aggregates in the storage of mercury and other metals: An example from yelloweye rockfish (Sebastes ruberrimus)

by John Wiley & Sons, Ltd.  (Jul. 14, 2015)

Melano‐macrophage aggregates, collections of specialized cells of the innate immune system of fish, are considered a general biomarker for contaminant toxicity. To elucidate further the relationship between macrophage aggregates and metals exposure, yelloweye rockfish (Sebastes ruberrimus), a long‐lived species, were sampled from the east and ...

Ghostbusters won’t answer the phone

by GLOBE Foundation  (Jul. 7, 2015)

A Supreme Court ruling that undermined a federal rule targeting mercury pollution will not affect the Obama administration’s plan to limit greenhouse gas emissions to slow the effects of global warming, the head of the Environmental Protection Agency said Tuesday. EPA Administrator Gina McCarthy said she was disappointed with last ...

Surface Decontamination of Mercury (elemental) by DeconGel 1101

by METIS Scientific  (Jun. 29, 2015)

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 ...

Simultaneous determination of trace lead and cadmium in water samples by adsorptive stripping voltammetry using gallic acid as a selective chelating agent

by IWA Publishing  (Jun. 8, 2015)

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, ...

Removal of trace mercury (II) from aqueous solution by in situ MnOx combined with poly-aluminum chloride

by IWA Publishing  (Jun. 8, 2015)

Removal of trace mercury from aqueous solution by Mn (hydr)oxides formed in situ during coagulation with poly-aluminum chloride (PAC) (in situ MnOx combined with PAC) was investigated. The efficiency of trace mercury removal was evaluated under the experimental conditions of reaction time, Mn dosage, pH, and temperature. In addition, the ionic ...

An environmental problem hidden in plain sight? Small Human‐made ponds, emergent insects, and mercury contamination of biota in the Great Plains

by John Wiley & Sons, Ltd.  (May 25, 2015)

Mercury (Hg) contamination of small human‐made ponds and surrounding terrestrial communities may be 1 of the largest unstudied Hg‐pollution problems in the United States. Humans have built millions of small ponds in the Great Plains of the United States, and these ponds have become contaminated with atmospherically deposited mercury. In aquatic ...

Understanding aqueous trace metal characteristics from industrial sources in China

by IWA Publishing  (Mar. 13, 2015)

Trace metals are a group of toxic pollutants that can cause serious damage to ecosystems and humans. To determine the distribution characteristics of aqueous trace metal contamination and identify critical pollution sources, it is necessary to develop a detailed estimation of trace metal emissions. By considering emission-related factors in ...

Influence of a chlor‐alkali Superfund site on mercury bioaccumulation in periphyton and Low‐trophic level fauna

by John Wiley & Sons, Ltd.  (Mar. 2, 2015)

In Berlin, NH, the Androscoggin River flows adjacent to a former chlor‐alkali facility that is a US EPA Superfund site and source of mercury (Hg) to the river. A study was conducted to determine the fate and bioaccumulation of methylmercury (MeHg) to lower trophic‐level taxa in the river. Surface sediment directly adjacent to the source showed ...

Circumpolar contamination in eggs of the high‐arctic ivory gull Pagophila eburnea

by John Wiley & Sons, Ltd.  (Feb. 13, 2015)

The ivory gull Pagophila eburnea is a high‐Arctic species threatened by climate change and contaminants. The objective of this study was to assess spatial variation of contaminant levels (organochlorines ‘OCs’, brominated flame retardants ‘BFRs’, perfluorinated alkyl substances ‘PFASs’, and mercury ‘Hg’) in ivory gulls breeding in different ...

Increase in mercury in Pacific yellowfin tuna

by John Wiley & Sons, Ltd.  (Feb. 2, 2015)

Mercury is a toxic trace metal that can accumulate to levels that threaten human and environmental health. Models and empirical data suggest that humans are responsible for a great deal of the mercury actively cycling in the environment at present. Thus, one might predict that the concentration of mercury in fish should have increased ...

VaCure Mercury stabilisation by Mobile Units

by econ industries GmbH  (Dec. 30, 2014)

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´ ...

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