XRF scanning of discrete samples – A chemostratigraphic approach exemplified for loess-paleosol sequences from the Island of Susak, Croatia

Profe, Jörn; Wacha, Lara; Frechen, Manfred; Ohlendorf, Christian; Zolitschka, Bernd

doi:10.1016/j.quaint.2018.05.006

Cited by 20 publications

(8 citation statements)

References 74 publications

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“…Same data sources as in Fig. 7 with additional data for Aquitaine loess (Sitzia et al, 2017), Carpathian loess (Profe et al, 2018;Schatz et al, 2015), North France loess (Smykatz-Kloss, 2003).…”

Section: Weatheringmentioning

confidence: 99%

“…Correlation between CPA and Al2O3/SiO2 ratio in the loess samples from the study area (a) and Europe (b). Data sources: Carpathian loess (Bösken et al, 2017;Profe et al, 2018;Schatz et al, 2015;Újvári et al, 2014, 2008, North France/Belgium loess (this study, Chauvel et al, 2014;Gallet et al, 1998;Jamagne, 1973;Lautridou, 1985;Lautridou et al, 1984;Smykatz-Kloss, 2003), Rhine loess (this study, Kühn et al, 2013;Schatz et al, 2015;Taylor et al, 1983), Saxony/Poland loess (this study, Raczyk et al, 2015;Skurzyński et al, 2019Skurzyński et al, , 2017Waroszewski et al, 2018).…”

Section: Fig 12mentioning

confidence: 99%

“…Most geochemical studies focused on the main loess regions from the northern hemisphere, including the North European Loess Belt (NELB), China and the United States of America. Because of their sparser accumulation in the landscape, perimediterranean loess remain poorly documented except for some exceptions (Calvo et al, 2016;Profe et al, 2018). Recent studies in the Po plain (Wacha et al, 2018) the Ebro (Boixadera et al, 2015) and Tagus basins (Wolf et al, 2019) in Spain suggested, however, that Pleistocene loess covered vast parts of perimediterranean areas.…”

Section: Introductionmentioning

confidence: 99%

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Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhône Valley (southeast France) and comparison with other European regions

et al. 2020

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Pleistocene loess of the Rhône Valley and Provence region, disconnected from the two main European aeolian systems (North European Loess Belt and Danube basin), are of interest to test the impact of source variability, grain size sorting, weathering and sediment recycling on the geochemical composition. The concentration of major, trace and rare earth elements in loess and potential sources was analysed through Inductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) and ICP-Mass Spectometry (ICP-MS). Analyses show a genetic relationship between loess and the Ca-rich river sediments from the Alpine Ice Sheet (AIS). The loess of Provence show distinctive properties with a higher CaO and MgO content and a higher Europium anomaly (Eu/Eu*), suggesting sources richer in dolomite together with a contribution from mafic rocks (Alpine ophiolite complex). The homogeneous loess composition, compared to alluvial sources, reflects particle mixing during transport in the atmosphere. At the European scale, the geochemical composition of loess changes according to regions, but remains consistent within each region. Such variability is mostly related to the composition of rocks outcropping in respective catchments and especially in areas covered by ice sheets. The Chemical Proxy of Alteration (CPA) and Rb/K ratio suggest a weak chemical weathering linked to the cold and dry conditions typical of the Last Glacial. Recycling of older aeolian formations possibly caused loess enrichment in resistant minerals and quartz, especially for loess derived mostly from the abrasion of aeolian sand (Aquitaine).

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Section: Weatheringmentioning

confidence: 99%

Section: Fig 12mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhône Valley (southeast France) and comparison with other European regions

et al. 2020

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“…Exposure times of 100 s per measuring point is a common setting for the Itrax XRF-CS when analyzing discrete samples 28 . With this setting, each resin sample needs around 30 minutes to finish the measurement (i.e.…”

Section: Resultsmentioning

confidence: 99%

Rapid assessment of heavy metal pollution using ion-exchange resin sachets and micro-XRF core-scanning

Huang

Lin

Löwemark

et al. 2019

Sci Rep

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Conventional pollution monitoring strategies for heavy metals are often costly and unpractical. Innovative sampling and analytical approaches are therefore needed to efficiently monitor large areas. This study presents a novel, simple, fast, and inexpensive method to monitor heavy metal pollution that uses cation-exchange resin sachets and the micro-XRF core-scanning technique (XRF-CS). The resin passive samplers act as concentrators of cationic species and can be readily deployed spatially and temporally to record pollution signals. The large number of analytical tasks are then overcome by the fast and non-destructive XRF-CS to precisely assess elemental concentrations. Quantifying element loading involves direct comparison with a set of identically prepared and scanned resin reference standards containing Ca, Ti, Cr, Mn, Ni, Cu, Zn, Pb. The results show that within the test range (from 0–1000 s mg kg −1 ), the calibration lines have excellent regressions (R 2 ≥ 0.97), even at the shortest exposure time (1 s). A pilot field survey of a suspected polluted area in central Taiwan, where 30 resin sachets had been deployed, identified a pollution hot spot in a rapid and economical manner. Therefore, this approach has the potential to become a valuable tool in environmental monitoring and forensics.

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“…Subsequent data processing for such a run involves deletion of every second spectrum which are biased by the acrylic glass rims of the sample cups (Ohlendorf, 2018), recalculation of a new sum spectrum containing sample spectra only, fit optimization of the new sum spectrum and batch processing of the sample spectra. This measurement protocol was applied to samples of several loess-paleosol sequences as these are usually discretely sampled and characterized by silt-sized particles which facilitates sample preparation (Profe et al, 2018a;Profe et al, 2018b;Profe et al, 2016;Zolitschka et al, 2014). All measurements yielded good data repeatability with a mean relative standard deviation of < 1.5 % for main elements except for Al (14.3 %) and Ba (14.9 %).…”

Section: Discrete Samples and Powdered Samplesmentioning

confidence: 99%

Practical guidelines and recent advances in the Itrax XRF core-scanning procedure

Löwemark

Bloemsma²,

Croudace

et al. 2019

Quaternary International

Self Cite

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XRF core scanning has evolved to become a standard analytical technique for the rapid assessment of elemental, density and textural variations in a wide range of sediments and other materials, with applications ranging from palaeoceanography, paleoclimatology, geology, and environmental forensics to environmental protection. In general, scanning provides rapid, non-destructive acquisition of elemental and textural variations at sub-millimetre resolution for a wide range of materials. Numerous procedural adaptations have been developed for the growing number of applications, such as analyses of unconsolidated, water-rich sediments, powdered soil samples, or resin bags. Here, practical expertise and guidance from the Itrax community, gained over 15 years, is presented that should provide insights for new and experienced users.

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XRF scanning of discrete samples – A chemostratigraphic approach exemplified for loess-paleosol sequences from the Island of Susak, Croatia

Cited by 20 publications

References 74 publications

Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhône Valley (southeast France) and comparison with other European regions

Geochemical signature of sources, recycling and weathering in the Last Glacial loess from the Rhône Valley (southeast France) and comparison with other European regions

Rapid assessment of heavy metal pollution using ion-exchange resin sachets and micro-XRF core-scanning

Practical guidelines and recent advances in the Itrax XRF core-scanning procedure

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