Sulfur isotope measurement of sulfate and sulfide by high-resolution MC-ICP-MS

Craddock, Paul R.; Rouxel, Olivier; Ball, L.; Bach, Wolfgang

doi:10.1016/j.chemgeo.2008.04.017

Cited by 162 publications

(182 citation statements)

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“…Once appropriate reference values are assigned, the respective materials can be used for scaling measured isotopic distances using isotope bracketing. More recently, sulfur isotopic information has also been obtained from MC-ICP-MS measurements, with a major advantage of a significantly reduced sample size [153,158,159]. The Commission wanted to eliminate possible confusion in the reporting of relative sulfur isotopeamount-ratio data.…”

Section: Sulfurmentioning

confidence: 99%

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

Brand

Coplen

Vogl

et al. 2014

Pure and Applied Chemistry

562

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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Section: Sulfurmentioning

confidence: 99%

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

Brand

Coplen

Vogl

et al. 2014

Pure and Applied Chemistry

562

436

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“…Isotopes of sulfur were measured using the analytical procedure detailed by Craddock et al (2008). Briefly, the standard-sample bracketing method (Belshaw et al,…”

Section: Laser-ablation Mc-icp-ms Isotopic Analysesmentioning

confidence: 99%

Geochemical tracers of processes affecting the formation of seafloor hydrothermal fluids and deposits in the Manus back-arc basin

Craddock¹

2009

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, in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the field of Chemical Oceanography THESIS ABSTRACTSystematic differences in trace element compositions (rare earth element (REE), heavy metal, metalloid concentrations) of seafloor vent fluids and related deposits from hydrothermal systems in the Manus back-arc basin (Eastern Manus Basin, EMB and Manus Spreading Center, MSC) are used to investigate processes that affect their formation. Processes responsible for observed differences in fluids and deposits from distinct geologic settings include (a) fluid-rock interaction (with temperature, pressure and crustal composition as variables), (b) magmatic acid volatile input and, (c) local seawater entrainment and mixing with hydrothermal fluids, coupled with sulfide precipitation and metal remobilization. REE distributions in vent fluids in the Manus Basin exhibit a wide range of chondrite-normalized patterns that contrast with the relatively uniform distributions observed in mid-ocean ridge vent fluids. This heterogeneity is attributed to marked differences in fluid pH and fluoride and sulfate concentrations that significantly affect REE solubility. The data indicate that REEs can be used as indicators of the styles of magmatic acid volatile input in back-arc hydrothermal systems. Anhydrite in deposits record the same range of REE patterns, suggesting that REE distributions preserved in anhydrite can be used as indicators of past magmatic acid volatile input. Vent fluid heavy metal and metalloid concentrations also exhibit considerable differences. High metal concentrations in EMB versus MSC vent fluids reflect low pH, largely from input of magmatic acid volatiles (indicated by fluoride concentrations greater than seawater). In EMB, metal concentrations are locally affected by dissolution of previously deposited sulfide owing to low pH conditions affected by magmatic acid volatile input or seawater entrainment and mixing with hydrothermal fluid that leads to sulfide precipitation and secondary acidity generation. Massive sulfide deposits in the Manus Basin exhibit a wide range of mineral compositions and heavy metal enrichments. The formation of Zn-rich (sphalerite/wurtzite) deposits in the MSC and of Cu-Fe and Cu-As-rich (chalcopyrite, tennantite) deposits in the EMB reflects differences in the conditions of sulfide precipitation (temperature, pH) and in metal concentrations. The data suggest that heavy metal and metalloid distributions in massive sulfide deposits can be used as indicators of the conditions of vent deposit formation.Thesis Co-Supervisor: Dr. Margaret K. Tivey Title: Senior Scientist, Woods Hole Oceanographic Institution Thesis Co-Supervisor: Prof. Wolfgang Bach Title: Professor of Geochemistry, University of Bremen ACKNOWLEDGEMENTS Suddenly, I think it easier to discuss and distill five-plus of graduate education and research in a thesis dissertation than it is to appropriately pay homage to all those that made this academic journey possible in the first place. M...

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“…A USGS Standard Reference Material (SRM) M-158 (major ion constituents, chlorinated water) was analyzed using the same preparation as the rain water samples. In addition a National Research Council of Canada certified reference material seawater standard, CAAS-4, processed through column separation was also analyzed as a secondary standard reference material (Craddock et al, 2008). Sulfur isotope data are generally reported in conventional δ notation with respect to a standard or in-house reference material of known sulfur isotopic composition.…”

Section: Bulk Deposition Analysismentioning

confidence: 99%

Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems

Bern

Chadwick

Kendall

et al. 2015

Science of The Total Environment

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• Sources of sulfur in Hawaiian ecosystems were investigated via sulfur isotopes.• Basalt, sea-salt, volcanic and marine biogenic emissions have distinct isotope ratios.• Atmospheric deposition sources of sulfur dominated all but one site investigated.• Steep gradients of marine vs. volcanic atmospheric deposition were found.• Gradients occurred with distance to the coast and elevation. a b s t r a c t a r t i c l e i n f o Sulfur, a nutrient required by terrestrial ecosystems, is likely to be regulated by atmospheric processes in welldrained, upland settings because of its low concentration in most bedrock and generally poor retention by inorganic reactions within soils. Environmental controls on sulfur sources in unpolluted ecosystems have seldom been investigated in detail, even though the possibility of sulfur limiting primary production is much greater where atmospheric deposition of anthropogenic sulfur is low. Here we measure sulfur isotopic compositions of soils, vegetation and bulk atmospheric deposition from the Hawaiian Islands for the purpose of tracing sources of ecosystem sulfur. Hawaiian lava has a mantle-derived sulfur isotopic composition (δ 34 S VCDT) of − 0.8‰. Bulk deposition on the island of Maui had a δ 34 S VCDT that varied temporally, spanned a range from +8.2 to + 19.7‰, and reflected isotopic mixing from three sources: sea-salt (+ 21.1‰), marine biogenic emissions (+ 15.6‰), and volcanic emissions from active vents on Kilauea Volcano (+ 0.8‰). A straightforward, weathering-driven transition in ecosystem sulfur sources could be interpreted in the shift from relatively low (0.0 to +2.7‰) to relatively high (+17.8 to +19.3‰) soil δ 34 S values along a 0.3 to 4100 ka soil age-gradient, and similar patterns in associated vegetation. However, sub-kilometer scale spatial variation in soil sulfur isotopic composition was found along soil transects assumed by age and mass balance to be dominated by atmospheric sulfur inputs. Soil sulfur isotopic compositions ranged from +8.1 to +20.3‰ and generally decreased with increasing elevation (0-2000 m), distance from the coast (0-12 km), and annual rainfall (180-5000 mm). Such trends reflect the spatial variation in marine versus volcanic inputs from atmospheric deposition. Broadly, these results illustrate how the sources and magnitude of atmospheric deposition can exert controls over ecosystem sulfur biogeochemistry across relatively small spatial scales.Published by Elsevier B.V.

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Sulfur isotope measurement of sulfate and sulfide by high-resolution MC-ICP-MS

Cited by 162 publications

References 72 publications

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

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

Geochemical tracers of processes affecting the formation of seafloor hydrothermal fluids and deposits in the Manus back-arc basin

Steep spatial gradients of volcanic and marine sulfur in Hawaiian rainfall and ecosystems

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