Combined zinc-lead isotope and trace-metal assessment of recent atmospheric pollution sources recorded in Irish peatlands

Rosca, Carolina; Schoenberg, Ronny; Tomlinson, Emma L.; Kamber, Balz S.

doi:10.1016/j.scitotenv.2018.12.049

Cited by 40 publications

(20 citation statements)

References 78 publications

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“…The effectiveness of the 70 Zn-67 Zn double-spike design can be demonstrated by comparing the d 66 Zn results of this study with previously published data sets for the wellcharacterised basaltic reference materials BHVO-2 and BCR-2. As discussed above (section IRMM-3702 certified reference material and secondary isotope standards), the data sets reported here for these materials yield weighted mean d 66 Zn of 0.356 ± 0.016‰ (2s*) for BHVO-2 and 0.282 ± 0.023‰ (2s*) for BCR-2, which agree with literature values (Herzog et al 2009, Bigalke et al 2010, Moeller et al 2012, Sossi et al 2015, Rosca et al 2019, Yan et al 2019. Taken together, this demonstrates that accurate results can be routinely obtained when a 70 Zn-67 Zn double spike is implemented.…”

Section: Performance Of the 70 Zn-67 Zn Double Spikesupporting

confidence: 89%

High‐Precision Zinc Isotopic Measurement of Certified Reference Materials Relevant to the Environmental, Earth, Planetary and Biomedical Sciences

Druce

Stirling

Rolison

2020

Geostandard Geoanalytic Res

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The zinc (Zn) stable isotope system has emerged as a powerful tool for investigating natural and anthropogenic processes of interest to disciplines ranging from the Earth and planetary sciences to biomedical research. In nature, Zn isotopes typically fractionate (66 Zn/ 64 Zn) within the range of-1 and +1 permil (‰), and however, analytical limitations restrict the application of the Zn isotope system. Specifically, there is a lack of well-characterised matrix-matched reference materials covering most Zn isotope applications that are essential for validating laboratory performance, particularly given the contamination prone nature of Zn. Furthermore, the increasing demand for analysis of size-limited materials and sample types displaying small, sub-permil level Zn isotope variations requires improvements in measurement procedures. To address these limitations, the d 66 Zn values of two pure Zn solutions and eighteen reference materials including the previously uncharacterised RGM-2, BCR-279, DOLT-4, DOLT-5, NASS-7, SBC-1, SGR-1b, MESS-3 and HISS-1, and the understudied QLO-1, SDC-1, BCR-414, NASS-6 and COQ-1 materials are reported. Furthermore, a 70 Zn-67 Zn doublespike design has been implemented that routinely achieves intermediate measurement precision better than ± 0.02‰. This represents at least a twofold improvement when compared with other double-spike designs, providing a robust platform of d 66 Zn values required for quality control procedures.

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Section: Performance Of the 70 Zn-67 Zn Double Spikesupporting

confidence: 89%

High‐Precision Zinc Isotopic Measurement of Certified Reference Materials Relevant to the Environmental, Earth, Planetary and Biomedical Sciences

Druce

Stirling

Rolison

2020

Geostandard Geoanalytic Res

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“…(1994); 25 – Reilly and Mitchell (2015); 26 – Rosca et al . (2019); 27 – Kekonen et al . (2005); 28 – Gudmundsdóttir et al .…”

Section: Resultsmentioning

confidence: 99%

“…The Laki 1783‐4 eruption is Iceland's second largest basaltic flood lava eruption in historical times, with large volumes of associated pyroclastic fall deposits (0.76 km 3 ; Thordarson and Self, 1993). The widespread dispersal of the Laki 1783‐4 tephra includes Greenland (Fiacco et al ., 1994), Ireland (Reilly and Mitchell, 2015; Rosca et al ., 2019) and Svalbard (Kekonen et al ., 2005), which supports its potential to reach the White Sea region. In contrast, the CLA‐L1 tephra has to date only been found at one distal locality in Ireland (Watson et al ., 2016), making its occurrence in the White Sea region unlikely.…”

Section: Resultsmentioning

confidence: 99%

Identification of Icelandic tephras from the last two millennia in the White Sea region (Vodoprovodnoe peat bog, northwestern Russia)

Vakhrameeva

Portnyagin

Пономарева

et al. 2020

J Quaternary Science

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The generation of reliable age models for palaeoenvironmental and archaeological records in the Eurasian Arctic is often problematic when using conventional dating techniques. Tephrochronology can potentially improve the chronologies of such records and synchronise disparate sedimentary archives. However, to date, systematic tephra studies are lacking for this region. This paper presents the first cryptotephra data from the White Sea region (northwestern Russia) based on a peat core spanning the past~1800 years. We identify seven geochemical glass populations that derive from six Icelandic volcanoes and correlate four of them to north European tephra isochrons; these include Askja AD 1875, the basaltic component of the AD 877 Landnám tephra, and tephras BTD-15 (c. AD 1750-1650) and SL-2/SB-2 (AD 803-767) from unknown eruptions of Katla and Snaefellsjökull, respectively. The remaining three populations originate from Grímsvötn, Hekla and Katla; however, their attribution to individual eruptions remains ambiguous. These findings highlight the potential to extend the Late Holocene tephrochronological framework of northern Europe to the west Eurasian Arctic. The detection of at least three basaltic tephras in the core suggests that basaltic shards can be transported over larger distances than previously known and that peatlands are well suited to preserve such components.

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“…Zn solubility in bulk aerosols is thus generally high in almost all of the open oceanic regions studied, usually higher than 70% (e.g., Chance et al, ; Shelley et al, ). In terms of aerosol δ 66 Zn, a recent study compiled published datasets and showed that anthropogenic aerosol Zn is isotopically lighter than lithogenic materials with δ 66 Zn to be around +0.3‰ (Rosca et al, ). The averaged δ 66 Zn in anthropogenic aerosols collected in the SCS was +0.072±0.065‰, also lighter than lithogenic dusts.…”

Section: Discussionmentioning

confidence: 99%

Zn Isotope Composition in the Water Column of the Northwestern Pacific Ocean: The Importance of External Sources

Liao

Takano

Yang

et al. 2020

Global Biogeochemical Cycles

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We determined Zn isotope composition (δ 66 Zn) in the water column of the Northwestern Pacific Ocean (NWPO) and its marginal seas to investigate the processes driving vertical and spatial variations. Comparable to previous studies, dissolved δ 66 Zn was relatively low in the top 200 m, ranging from −0.91 to +0.24‰ and increased with depth toward an averaged value, +0.38±0.10‰, in deep water. We found that δ 66 Zn observed in the deep water of the NWPO was much lower than the Northeastern Pacific Ocean. Box model approaches suggest that spatial variations in the deep water may be attributed to isotopically light Zn originating from sedimentary input or anthropogenic aerosols. In the surface water, the fractionation factors derived from both closed or open system fractionation models are all less than one in the NWPO. However, both closed and open system models show a relatively poor fit to the measured data. We thus propose that external input is a major factor causing the variations of [Zn] and δ 66 Zn values in surface water, in addition to the effects of scavenging, physical mixing, and biological uptake. As elevated [Zn] and relatively light δ 66 Zn in the surface water were observed in high aerosol input regions, aerosol deposition may play a dominant role in regulating Zn elemental and isotopic composition in the surface ocean. Key Points: • We observed spatial variations of δ 66 Zn in the deep water of the NWPO and found considerably lighter δ 66 Zn than the NEPO • The sedimentary input may be a major cause of relatively light dissolved δ 66 Zn in the deep water of the NWPO • Aerosol Zn input is a major cause of the variations of [Zn] and δ 66 Zn in the surface water of the NWPO Supporting Information: • Supporting Information S1

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Combined zinc-lead isotope and trace-metal assessment of recent atmospheric pollution sources recorded in Irish peatlands

Cited by 40 publications

References 78 publications

High‐Precision Zinc Isotopic Measurement of Certified Reference Materials Relevant to the Environmental, Earth, Planetary and Biomedical Sciences

High‐Precision Zinc Isotopic Measurement of Certified Reference Materials Relevant to the Environmental, Earth, Planetary and Biomedical Sciences

Identification of Icelandic tephras from the last two millennia in the White Sea region (Vodoprovodnoe peat bog, northwestern Russia)

Zn Isotope Composition in the Water Column of the Northwestern Pacific Ocean: The Importance of External Sources

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