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Mercury (Hg)

Mercury DropsMercury is not very abundant in the planet’s crust; however, even modest increases in the quantity of mercury being introduced into the global environment is a matter of considerable and growing concern. Mercury contamination can threaten the health of humans and wildlife, from industrial sites to the most remote wilderness areas. Mercury is considered a global pollutant since it can affect the environment in areas far removed from the point of its original release.Since 1982, Brooks Applied Labs has devoted significant resources to the research and development of the analytical methods and instrumentation necessary to quantify mercury and methylmercury concentrations at ultra-low levels in even the most complex matrices. Our early research contributed substantially to the development and validation of EPA Method 1631 and EPA Method 1630 for the determination of mercury and methylmercury in waters at sub-parts-per-trillion levels.
Over the decades we have developed and perfected our analytical methods to determine mercury and methylmercury concentrations in even the most complex matrices.

We routinely analyze the following for mercury and methylmercury with some of the lowest detection limits available to our clients:

– surface water
– coal

– ground water
– fish tissue

– wastewater
– macroinvertebrates

– seawater
– plankton

– soil
– food

– sediments
– human blood

Contact Us to get a customized list of our current MDL/MRL’s for your project.

Types of Mercury Testing We Do:

Bioavailability in Sediments
When investigating mercury contaminated soils at legacy mining and industrial sites, measurements of the concentrations of total mercury in the soil are clearly necessary. However, the best approach to site remediation sometimes requires a fuller understanding of the environmental bioavailability and mobility of the particular mercury compounds found at the site.

There is growing interest in the regulatory community concerning bioavailability and Brooks Applied Labs remains one of the foremost experts in providing commercially practical solutions to determine the concentrations of various mercury compounds or fractions. Through advanced separation techniques, we are able to quantify mercury concentrations in sediments according to specific compound or fraction of interest.

One of the methods used at Brooks Applied Labs to assess the concentrations of mercury compounds in soils that belong to these specific classes is a selective sequential extraction (SSE) procedure. These selective sequential extractions represent the mobility of specific classes of mercury compounds and can be classified as fractions that are water soluble, weak acid soluble, organo-complexed, strongly complexed, or mineral bound. The first three of these fractions have been shown to be significantly more mobile, bioavailable, and susceptible to methylation.

Data regarding of the concentrations and ratios of these mercury compounds in contaminated soils can be critical to successful site remediation and containment of potentially hazardous materials.

Pore Water Extractions
The extraction of interstitial waters from sediment samples prior to the analyses of mercury or methylmercury requires particular precautions to prevent both potential contamination and species conversion. Brooks Applied Labs has developed custom procedures that allow the collection of pore water extractions while maintaining the integrity of the sample.
Elutriate Generation
Elutriate Generation”]Effectively evaluating the effects of dredging projects often entails replicating elutriate generation under the controlled conditions of the laboratory. Where mercury or methylmercury analyses are required, Brooks Applied Labs has developed custom procedures that ensure an accurate representation of the physical processes that occur without compromising the integrity of the sample through inadvertent contamination.