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Se and Hg in Fish Collected Near Power Plants

Arsenic SpeciationBrooks Applied Labs’ data was featured prominently in a recent Environmental Toxicology and Chemistry journal article titled, “Selenium and Mercury in Freshwater Fish Muscle Tissues and Otoliths: A Comparative Analysis”. Authors Robin Reash et. al. presented a study where they measured mercury (Hg), methylmercury (MeHg), and selenium (Se) in muscle tissue and otoliths from 12 species of fish collected from locations influenced by power plant wastewater. There were interesting differences between Se and Hg in their correlation between concentration in the tissues and otoliths and ecological/exposure factors, perhaps explained by the different manners in which Se and Hg bioaccumulate. For more information, the full abstract can be viewed on-line. Visit the BAL website for more information regarding the vast array of analytical services available for biological tissues

Bioavailability of Mercury in Power Plant Wastewater

Power Plant WastewaterStandard regulatory practices limit the total concentration of toxic metals, such as mercury, when discharged from industrial sources, ignoring the importance of speciation and bioavailability. This can result in dischargers spending more on wastewater treatment than might be necessary for adequate environmental protection. In a new article by author Robin Reash, data from Brooks Applied Labs is used to support the conclusion that by utilizing analyses for bioavailable forms of mercury, such as acid-labile mercury and methylmercury, the regulatory limits imposed are likely overly conservative. The article, published in August 2018 in the SETAC journal Integrated Environmental Assessment and Management, is available on-line here.

Contact us today for more information on our specialty analytical services for the speciation of mercury.