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The high resolution record of atmospheric selenium recovered from Greenland snow

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dc.contributor.authorLee, Khanghyun-
dc.contributor.authorHong, Sang-Bum-
dc.contributor.authorLee, Jeonghoon-
dc.contributor.authorChung, Ji Woong-
dc.contributor.authorHur, Soon Do-
dc.contributor.authorHong, Sungmin-
dc.coverage.spatialGreenland-
dc.date.accessioned2017-08-03T12:08:47Z-
dc.date.available2017-08-03T12:08:47Z-
dc.date.issued2015-
dc.description.abstractSelenium concentrations were determined in a continuous series of 70 snow samples collected from a 3.2 m snow pit at northwestern Greenland together with soluble ions such as sodium (Na<sup>+</sup>), calcium (Ca<sup>2+</sup>), methanesulfonic acid (MSA), sulfate (SOsub>4</sub><sup>2-</sup> ) and oxygen isotope ratio (δ<sup>18</sup>O). The Se concentrations in the snow samples at the low pg/g level were successfully determined using the inductively coupled plasma sector field mass Spectrometry (ICP-SF-MS) with an APEX high-sensitivity inlet system and ACM membrane desolvation module. The well defined depth profiles of δ<sup>18</sup>O, Na+ and Ca<sup>2+</sup> indicated that the snow pit samples covered the time period from spring 2003 to summer 2009. A strong variability in Se concentrations, ranging from 7.2 to 45.1 pg/g, are observed with generally higher values during winter and spring and lower values during summer and fall. Concentrations of Se showed rather significant correlations with Ca<sup>2+</sup> (r=0.400) and non-sea salt SO<sup>2-</sup> (r=0.447), indicating that significant anthropogenic Se input to the snow is likely controlled by the seasonality of transport efficiency of anthropogenic Se from the source regions of Asia. The high Se/MSA ratios and crustal enrichment factors are generally coincident with relatively high Se concentrations. This supports that a significant part of Se present in the snow layers is primarily attributed to anthropogenic inputs.-
dc.languageEnglish-
dc.titleThe high resolution record of atmospheric selenium recovered from Greenland snow-
dc.typePoster-
dc.identifier.bibliographicCitationLee, Khanghyun, et al. 2015. The high resolution record of atmospheric selenium recovered from Greenland snow. Arctic Science Summit Week 2015. Toyama, Japan. 2015.04.27.-30.-
dc.citation.conferenceDate2015.04.27.-30-
dc.citation.conferenceNameArctic Science Summit Week 2015-
dc.citation.conferencePlaceToyama, Japan-
Appears in Collections  
2014-2016, Investigation of Climate Change Mechanism by Observation and Simulation of Polar Climate for The Past and Present (14-16) / Kim, Seong-Joong (PE14010; PE15010; PE16010)
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