Unusual fractionation of both odd and even mercury isotopes in precipitation from Peterborough, ON, Canada

Chen, Jiubin; Hintelmann, Holger; Feng, Xinbin; Dimock, Brian

doi:10.1016/j.gca.2012.05.005

Cited by 293 publications

(421 citation statements)

References 62 publications

(166 reference statements)

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“…Further experimental and observational work on Hg isotope MDF during coal combustion, metal refining and liquid Hg 0 use is needed to confirm the presented conceptual models. High-precision Hg isotope measurement of total gaseous Hg (TGM, GEM+GOM) and precipitation Hg has been reported for several N-American and European regions (Chen et al, 2012;Demers et al, 2013Demers et al, , 2015Donovan et al, 2013;Fu et al, 2014;Gratz et al, 2010;Sherman et al, 2010Sherman et al, , 2012Sherman et al, , 2015Wang et al, 2015). Global TGM is enriched in the heavy isotopes (d 202 Hg=0.51 ± 0.41 ‰, 1SD) (Demers et al, 2013(Demers et al, , 2015Fu et al, 2014;Gratz et al, 2010;Sherman et al, 2010) compared to our model estimated GEM emissions (Table 1).…”

Section: Discussionmentioning

confidence: 55%

Historical (1850–2010) mercury stable isotope inventory from anthropogenic sources to the atmosphere

Sun

Streets

Horowitz

et al. 2016

Elementa: Science of the Anthropocene

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162

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Mercury (Hg) stable isotopes provide a new tool to trace the biogeochemical cycle of Hg. An inventory of the isotopic composition of historical anthropogenic Hg emissions is important to understand sources and post-emission transformations of Hg. We build on existing global inventories of anthropogenic Hg emissions to the atmosphere to develop the first corresponding historical Hg isotope inventories for total Hg (THg) and three Hg species: gaseous elemental Hg (GEM), gaseous oxidized Hg (GOM) and particulate-bound Hg (PBM). We compile d

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Section: Discussionmentioning

confidence: 55%

Historical (1850–2010) mercury stable isotope inventory from anthropogenic sources to the atmosphere

Sun

Streets

Horowitz

et al. 2016

Elementa: Science of the Anthropocene

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162

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“…Within this research, even mass-independent isotopic fractionation of mercury has been observed [298][299][300]. Differentiation between mass-dependent and mass-independent isotopic fractionation requires higher accuracies than usual [301]. Therefore, mercury isotopic reference materials supporting measurement uncertainties in the sub-permil range are required [23].…”

Section: Mercurymentioning

confidence: 88%

Assessment of international reference materials for isotope-ratio analysis (IUPAC Technical Report)

Brand

Coplen

Vogl

et al. 2014

Pure and Applied Chemistry

546

436

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Abstract:Since the early 1950s, the number of international measurement standards for anchoring stable isotope delta scales has mushroomed from 3 to more than 30, expanding to more than 25 chemical elements. With the development of new instrumentation, along with new and improved measurement procedures for studying naturally occurring isotopic abundance variations in natural and technical samples, the number of internationally distributed, secondary isotopic reference materials with a specified delta value has blossomed in the last six decades to more than 150 materials. More than half of these isotopic reference materials were produced for isotope-delta measurements of seven elements: H, Li, B, C, N, O, and S. The number of isotopic reference materials for other, heavier elements has grown considerably over the last decade. Nevertheless, even primary international measurement standards for isotope-delta measurements are still needed for some elements, including Mg, Fe, Te, Sb, Mo, and Ge. It is recommended that authors publish the delta values of internationally distributed, secondary isotopic reference materials that were used for anchoring their measurement results to the respective primary stable isotope scale.

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“…202 Hg and D 199 Hg values have been reported in environmentally relevant matrices such as rocks (Smith et al, 2008), mineral deposits (Hintelmann and Lu, 2003;Smith et al, 2005Smith et al, , 2008Stetson et al, 2009;Sonke et al, 2010), coals (Biswas et al, 2008;Lefticariu et al, 2011;Sun et al, 2014;Yin et al, 2014b), soils (Biswas et al, 2008;Zhang et al, 2013;Feng et al, 2013), sediments (Gehrke et al, 2011;Foucher and Hintelmann, 2009;Feng et al, 2010;Liu et al, 2011;Bartov et al, 2013;Donovan et al, 2013;Ma et al, 2013;Yin et al, 2013aYin et al, , 2015, water (Štrok et al, 2014), air (Demers et al, 2013;Rolison et al, 2013), precipitation (Gratz et al, 2010;Chen et al, 2012;Demers et al, 2013;Sherman et al, 2011Sherman et al, , 2015 and biological samples Blum et al, 2013;Demers et al, 2013;Yin et al, 2013b). With well-defined source signatures, researchers may estimate the relative contribution of sources of Hg through the utilization of binary and/or triple mixing models (Foucher and Hintelmann, 2009;Feng et al, 2010;Liu et al, 2011;Bartov et al, 2013;Donovan et al, 2013;Ma et al, 2013;…”

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confidence: 99%

Sedimentary records of mercury stable isotopes in Lake Michigan

Yin

Lepak

Krabbenhoft

et al. 2016

Elementa: Science of the Anthropocene

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Mercury (Hg) concentrations and Hg isotopic composition were investigated in three sediment cores in Lake Michigan (LM). Two cores were collected from Green Bay, a region heavily impacted by Hg contamination and one core from an offshore region of LM absent of direct point source Hg. Historical trends of Hg influxes suggest increased Hg deposition began in the 1890s in Green Bay and in the early 1800's in offshore LM. Recently deposited sediment reflecting more anthropogenic influence shows similar d202 Hg values (-1.0 to -0.5‰) for all three cores however, deep core sediments, reflecting pre-industrial eras, show much lower d 202Hg values (-1.7 to -1.2‰). Using a binary mixing model based on d 202Hg signatures, the proportion of anthropogenic Hg was estimated. Model output confirms that Green Bay is more contaminated by local point source than the offshore LM. An increase in positive D199 Hg values (-0.02 to +0.27‰) was observed from inner Green Bay to the offshore of LM, which may indicate increased input of atmospheric Hg and decreased watershed inputs along this transect. Overall, this study suggests that sedimentary Hg isotopes maybe a useful tracer in understanding Hg sources and history of Hg contamination in large lakes.

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Unusual fractionation of both odd and even mercury isotopes in precipitation from Peterborough, ON, Canada

Cited by 293 publications

References 62 publications

Historical (1850–2010) mercury stable isotope inventory from anthropogenic sources to the atmosphere

Historical (1850–2010) mercury stable isotope inventory from anthropogenic sources to the atmosphere

Assessment of international reference materials for isotope-ratio analysis (IUPAC Technical Report)

Sedimentary records of mercury stable isotopes in Lake Michigan

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