Utilization of mass-dependent and -independent fractionation of Mercury isotopes to understand Mercury cycling and bioaccumulation in aquatic systems
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چکیده
Utilization of mass-dependent and -independent fractionation of Mercury isotopes to understand Mercury cycling and bioaccumulation in aquatic systems B.A. BERGQUIST*, J.D. BLUM AND D. JUDE University of Toronto, Department of Geology, Toronto, ON, Canada (*correspondence: [email protected]) University of Michigan, Department of Geology, Ann Arbor, MI, USA ([email protected]) University of Michigan, School of Natural Resources and Environment, Ann Arbor, MI, USA ([email protected])
منابع مشابه
Mass-independent fractionation of mercury isotopes in the environment
[1] The toxicity of mercury’s methylated species and its biomagnification in aquatic food chains and global dispersion by the atmosphere are the cause of worldwide health problems. Recent reports have observed natural mass-dependent fractionation in mercury isotopes, and recent theoretical work has demonstrated that isotopic separation in mercury is due primarily to nuclear field shifts (nuclea...
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Mercury (Hg) is widely distributed in the environment, and its organic form, methylmercury (MeHg), can extensively bioaccumulate and biomagnify in aquatic and terrestrial food webs. Concentrations of MeHg in organisms are highly variable, and the sources in natural food webs are often not well understood. This study examined stable isotope ratios of MeHg (mass-dependent fractionation, as δ(202)...
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Mercury is recognized internationally as an important pollutant, since mercury and its compounds are persistent, bioaccumulative and toxic, and pose human and ecosystem risks. Although mercury can cycle in the environment in all media, an important aspect of this cycling is the bioaccumulation of mercury along the aquatic food chain. Mercury, in the form of methylmercury, bioaccumulates up the ...
متن کاملپایش جیوه تجمع&thinsp یافته در بافتهای مختلف ماهی کپورنقرهای (Hypophthalmichthys molitrix) دریاچه سد قشلاق سنندج
Backgrounds and Objectives:There have been always concerns regarding to consumption of aquatic products, particularly fish, due to the possibility of heavy metals bioaccumulation in aquatic creatures organs, throughout the world.Aresearch project was carried out to assess the level of concentrated total mercury in different tissues of Silver carp as the most consumed fish from Sanandaj Ghesglag...
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تاریخ انتشار 2008