Application of Avaatech X-ray fluorescence core-scanning in Sr/Ca analysis of speleothems

Liu, Dong; Tan, Liangcheng; Guo, Fei; Cai, Yanjun; Sun, Youbin; Xue, Gang; Cheng, X.; Yan, Hong; Cheng, Hai; Gao, Yongli; Kelley, Jessica

doi:10.1007/s11430-018-9344-2

Cited by 11 publications

(14 citation statements)

References 56 publications

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“…136.6, 135.5, 132.5, and 129.8 ka BP, while Mg/Ca (counts/counts) ratios were oscillated around the mean value of 0.00006 from 138 to 128.1 ka BP, without any clear long-term trend. Notably, the XRF results are semi-quantitative (Li et al, 2019), and there are approximately one order of magnitude offsets between the ratios obtained with XRF (counts/counts) and ICP-OES (mol/mol). Here, the comparisons of Sr/Ca and Mg/Ca between XRF and ICP-OES are based only on the relative variations.…”

Section: The Trace Elements Records Obtained From the Icp-oes And Xrf And Their Comparisonsmentioning

confidence: 88%

“…For the XRF measurement, the polished half of the stalagmite SD1 was scanned by a fourth-generation Avaatech XRF Core Scanner located at the Institute of Earth Environment, Chinese Academy of Sciences (IEECAS), using the method described by Li et al (2019). The XRF core-scanning may not be suitable for stalagmite with complex growth path or many voids on the surface, and therefore, the sample was only scanned at the intervals of 0.2 mm from 160 to 409 mm where the growth layer was clear and stable (Figure 2).…”

Section: Stalagmite Sample and Analytical Methodsmentioning

confidence: 99%

“…and speleothems (Fairchild & Treble, 2009;Li et al, 2019;Zhang et al, 2018). In speleothem studies, trace elements have been introduced to the field later than oxygen isotopes (Fairchild & Treble, 2009) and Sr and Mg are the two most important trace elements applied in paleo-hydroclimate studies (Fairchild & Treble, 2009;Johnson et al, 2006;Zhang et al, 2015).…”

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confidence: 99%

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Speleothem‐Based Hydroclimate Reconstructions During the Penultimate Deglaciation in Northern China

Xue

Cai

Lü

et al. 2021

Paleoceanog and Paleoclimatol

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Hydroclimatic change has a substantial impact on the lives and well-being of humans, especially in densely populated regions (Yang et al., 2015). As recorded in historical literature and as is known through modern observations, floods and droughts have occurred frequently in China, affecting not only agricultural production and regional economies, but also water security in China. Understanding the past variability of hydroclimatic change and its dynamics is essential for projecting future changes and mitigating the potential influence of climate change. Instrumental records usually not exceed 70 years, or 150 years in some cities in China. These records are too short to provide a full understanding of the variability of hydroclimatic change and the underlying forcing mechanisms. Therefore, the reconstruction of past hydroclimatic conditions by using various archives has generally been the focus of past climate change studies.As a type of secondary carbonate deposition that grew within caves, speleothem has been regarded as one of the most important archives in paleoclimate-related and paleoenvironmental studies. Chinese speleothem δ 18 O records have demonstrated Asian monsoon variability over the last seven glacial-interglacial transitions (Cheng et al., 2016; references therein). In terms of the penultimate deglaciation, Asian monsoon variability, driving forces, and the timing and structure of Termination II have been discussed based on various speleothem δ 18 O records (

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Section: The Trace Elements Records Obtained From the Icp-oes And Xrf And Their Comparisonsmentioning

confidence: 88%

Section: Stalagmite Sample and Analytical Methodsmentioning

confidence: 99%

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Speleothem‐Based Hydroclimate Reconstructions During the Penultimate Deglaciation in Northern China

Xue

Cai

Lü

et al. 2021

Paleoceanog and Paleoclimatol

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“…an average value of 0.00472 for path 1 (Li et al, 2019). This kind of counts or ratio discrepancy among three the paths are due to differences between scanning paths (path 1, 2 and 3 were scanned in April 16, 21 and 1, 2018, respectively).…”

Section: Influence Factorsmentioning

confidence: 97%

“…F16 and XL16 samples were tested at 0.1 mm and 0.2 mm intervals with 1*1 mm and 2*2 mm radiation areas. Finally, to examine whether these results are reliable, the scanning data were compared with inductively coupled plasma -optical emission spectrometry (ICP-OES) results for samples of XL16 and C9 (Li et al, 2019).…”

Section: Stalagmitementioning

confidence: 99%

Application of XRF Scanning to Different Geological Archives

Guo

Clemens

Liu

et al. 2021

Earth and Space Science

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High-resolution XRF scanning is widely used on marine and lake sediment cores as a means of rapidly acquiring elemental concentrations from closely spaced intervals with no damage to the samples. Therefore, guidance on how to obtain reliable datasets and select suitable step sizes for different geological media are of great importance. Here we apply this efficient analytical method to loess, stalagmite, and tridacna samples. The results show that 11 elements (Al,

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