Mercury Testing Articles on Environmental XPRT

Water Treatment Optimization - Case Study

Drinking water treatment in North America has stringent requirements for effluent water quality, with a great amount of attention being drawn to the presence of hazardous disinfection by-products (DBPs) persisting through water distribution systems. The operation of water treatment plants involves addition of various mixing agents to help with coagulation and settling of organics in the raw water ...

Jun. 29, 2017

By MANTECH

Mercury Spill Control Procedures

Mercury is a dangerous neurotoxin that can have damaging affects on both the central nervous system and renal system of humans. Exposure to mercury can cause serious developmental delays in children, and high level exposure is life threatening. When exposed to air, mercury vaporizes, readily becoming a dangerous aerosol that can be absorbed into the lungs and spread throughout the body. This is ...

May 12, 2010

Detecting Mercury in Water

Determination of Mercury (Hg) in Water by Hand-Held, Portable Cold Vapor Atomic Fluorescence SpectrometryWater is the most familiar and most abundant compound on Earth, making up 71% of its surface area.[1]It is a vital component for all known forms of life and is the aquatic habitat for thousands of species of microalgae, fish and shellfish. [2] With the presence of running water in our ...

Aug. 11, 2015

By Arizona Instrument LLC

Mercury Control Demonstrations

C1.1 | Halogens and Sulfur in Coals and their Influence on Co-benefit Mercury Capture Bernhard Vosteen | President, Vosteen Consulting Gmbh Not only the range of the coal mercury content itself, but also the range of the native halogen and sulfur contents in coal are of great influence on co-benefit mercury capture, wet and dry. The ...

Sep. 21, 2011

By Energy, Utility & Environment Conference (EUEC)

Mercury Spill Control Procedures

Mercury is a known neurotoxin that is extremely toxic even in small amounts. It directly affects the central nervous and renal systems, causing developmental delays, motor and brain problems like those associated with autism. Mercury"s hidden danger also lies in when at room temperature, when exposed it vaporizes readily. Once ...

Jan. 1, 2004

The source and risks of mercury in the offshore industry

Oil in Gas and RocksAlmost all oil and gas is found within the tiny spaces in sedimentary rocks, mainly sandstone and coarse-grained limestone. Bedrock limestone and sandstone, even though hard, also contain lots of pores that can contain water or oil or gas and other elements. Along with the gas and oil is a mixture of sand, silt & mud. This sludgy silt mud is rich in heavier metal elements ...

Jul. 7, 2007

By Able Instruments & Controls Ltd

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 ...

Dec. 30, 2014

By econ industries GmbH

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 ...

Jun. 29, 2015

By KT Chemicals, Inc.

Mercury spill control procedures - industrial hygiene news

Mercury is a known neurotoxin that is extremely toxic even in small amounts. It directly affects the central nervous and renal systems, causing developmental delays, motor and brain problems like those associated with autism. Mercury’s hidden danger also lies in when at room temperature, when exposed it vaporizes readily. Once it has become an aerosol, it is absorbed into the lungs and ...

May 12, 2010

Relative Accuracy Testing of an X-Ray Fluorescence-Based Mercury Monitor at Coal-Fired Boilers

ABSTRACT The relative accuracy (RA) of a newly developed mercury continuous emissions monitor, based on X-ray fluorescence, was determined by comparing analysis results at coal-fired plants with two certified reference methods (American Society for Testing and Materials [ASTM] Method D6784-02 and U.S. Environment Protection Agency [EPA] Method 29). During the first determination, the ...

May 1, 2006

By Cooper Environmental Services

The identification and testing of a method for mercury-free gold processing for artisanal and small-scale gold miners in Ghana

A study of the ASM sector of Ghana established the practices and attitudes of gold miners and proposed an alternative to mercury amalgamation. The study showed that miners were aware of health hazards associated with mercury but continued to use it because they knew of no credible alternative. It was realised that any process to replace amalgamation must be very efficient to capture gold around ...

May 17, 2010

By Inderscience Publishers

The polychaete worm Nereis diversicolor increases mercury lability and methylation in intertidal mudflats

The polychaete worm Nereis diversicolor engineers its environment by creating oxygenated burrows in anoxic intertidal sediments. We carried out a laboratory microcosm experiment to test the impact of polychaete burrowing and feeding activity on the lability and methylation of mercury in sediments from the Bay of Fundy, Canada. The concentration of labile inorganic mercury and methylmercury in ...

Apr. 30, 2013

By John Wiley & Sons, Ltd.

Toxicity and bioavailability of mercury in spiked sediments on Hyalella curvispina Shoemaker, 1942

Mercury is a non–essential toxic heavy metal often found in bottom freshwater sediments. The aim of the present study was to evaluate the influence of the organic matter (OM) on the toxicity and bioavailability of mercury in sediment samples on the amphipod Hyalella curvispina, assessing survival and growth under chronic exposure. Species sensitivity in water–only tests was LC–50 of 96 h 0.025 ...

May 22, 2013

By Inderscience Publishers

Ebullition rates and mercury concentrations in St. Lawrence River sediments and a benthic invertebrate

Ebullition, the release of gas from anaerobic decomposition in sediments, was recorded in a mercury‐contaminated depositional zone (zone 1) of the St. Lawrence River area of concern in Cornwall, Ontario, Canada. Our aim was to test if this disturbance affected the bioavailability of total mercury (THg) and methylmercury (MeHg) in surficial sediments to a benthic invertebrate (Echinogammarus ...

Jan. 7, 2013

By John Wiley & Sons, Ltd.

Predictors of mercury spatial patterns in San Francisco Bay forage fish

Pollution reduction efforts should be targeted towards those sources that result in the highest bioaccumulation. For mercury (Hg) in estuaries and other complex water bodies, carefully designed biosentinel monitoring programs can help identify predictors of bioaccumulation and inform management priorities for source reduction. We employed a probabilistic forage fish Hg survey with hypothesis ...

Jul. 26, 2013

By John Wiley & Sons, Ltd.

Critical perspectives on mercury toxicity reference values for protection of fish

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 several lines of evidence. First, their conceptual ...

Feb. 29, 2016

By John Wiley & Sons, Ltd.

Sulphate reducing bacteria to precipitate mercury after electrokinetic soil remediation

Combined treatment with electroremediation and sulphate reducing bacteria (SRB) was tested in laboratory and pilot scale. The contaminated soil came from a chlor-alkali factory and contained about 100 mg/kg Hg. Iodide/iodine complexing agent was used to mobilize mercury. Mercury iodide complexes were moved to the anode solution using an electric field. The anode solution was then mixed with ...

Apr. 1, 2008

By Center for Environment and Energy Research & Studies (CEERS)

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 ...

Oct. 28, 2011

By PerkinElmer, Inc.

Remediation of mercury contaminated industrial site for future expansion - case study

70,000 tons of mercury contaminated soil and building rubble have to be cleaned in an industrial facility in the south of France until 2013. For the realization of this remediation work, an econ industries VacuDry® 12,000 has been in operation since early 2011. After the treatment the mercury free soils can be re-used on-site as building material. A similar but smaller econ industries ...

Feb. 4, 2014

By econ industries GmbH

Emission Testing and Monitoring

Presented in Track B4: EMISSION TESTING & MONITORING at EUEC 2011, January 31 Phoenix, Arizona B4.1 | Update on PM2.5 and Condensable Particulate Matter Emissions Measurement Methods Larry Hottenstein | Partner, Environmental Resources Management Following the promulgation of the PM2.5 ...

May 9, 2011

By Energy, Utility & Environment Conference (EUEC)

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