X-Ray Spectrometry最新文献_第5页

X‐ray fluorescence analysis of mercury in human hairs using a secondary target placed behind the sample X射线荧光分析人类头发中的汞使用放置在样品后面的第二个目标

4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-10-02 DOI: 10.1002/xrs.3406

Fumiyuki Inoue, Tugufumi Matsuyama, Kouichi Tsuji

{"title":"X‐ray fluorescence analysis of mercury in human hairs using a secondary target placed behind the sample","authors":"Fumiyuki Inoue, Tugufumi Matsuyama, Kouichi Tsuji","doi":"10.1002/xrs.3406","DOIUrl":"https://doi.org/10.1002/xrs.3406","url":null,"abstract":"Abstract Mercury is a pollutant that poses a considerable health risk. The concentration of mercury in scalp hair can be used to estimate past mercury exposure. Methods such as atomic absorption spectrophotometry and inductively coupled plasma‐based techniques have been used to determine the concentrations of trace elements in scalp hairs; however, these analytical methods have several limitations, including the need for expensive equipment, complex sample preparation, and large samples of more than 100 hairs. Therefore, simpler and more cost‐effective methods are required. X‐ray fluorescence (XRF) spectroscopy is a simple and fast analytical method. To improve the sensitivity, we applied a secondary target method to enhance the XRF excitation and reduce the background. In conventional secondary target methods, the primary x‐rays irradiate a secondary target of a pure substance, and the sample is then irradiated with the fluorescent x‐rays from the secondary target. We placed high‐purity Y₂O₃ powder, which served as the secondary target, behind the hair samples. The XRF intensities of trace elements such as mercury and zinc in the hair were enhanced by applying the secondary target behind the hair.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135829631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elemental studies and mapping of cholesterol and pigment gallstones using scanning electron microscopy–energy dispersive spectroscopy 使用扫描电子显微镜-能量色散光谱对胆固醇和色素胆结石进行元素研究和制图

4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-09-22 DOI: 10.1002/xrs.3403

Varun Bali, Yugal Khajuria, Vidit Manyar, Pradeep K. Rai, Upendra Kumar, Charles Ghany, Shipra Tripathi, Vivek K. Singh

{"title":"Elemental studies and mapping of cholesterol and pigment gallstones using scanning electron microscopy–energy dispersive spectroscopy","authors":"Varun Bali, Yugal Khajuria, Vidit Manyar, Pradeep K. Rai, Upendra Kumar, Charles Ghany, Shipra Tripathi, Vivek K. Singh","doi":"10.1002/xrs.3403","DOIUrl":"https://doi.org/10.1002/xrs.3403","url":null,"abstract":"Abstract Gallstone formation is one of the most severe human diseases, with regional differences in gallstone composition worldwide. The formation of gallstones inside the gallbladder is a complex process and is still under debate despite advances in instrumentation. This study was an in‐depth analysis of the chemical, structural, and elemental composition of cholesterol and pigment‐type gallstones using Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy–energy dispersive X‐ray spectroscopy (SEM–EDS). Thermal gravimetric and differential scanning calorimetry (TG‐DSC) analysis was also carried out on gallstones to predict their thermal behavior. FTIR spectroscopy was employed to distinguish the cholesterol and pigment gallstones. Using SEM, we performed the morphological studies of gallstone and EDS were carried out to analyze elemental distribution within the gallstones. Elemental imaging and mapping of the major and minor elements within the cholesterol and black pigment gallstones were carried out, revealing the stone's heterogeneous nature. The level of heavy and toxic elements was found to be higher in pigment stones than in cholesterol gallstones. The results obtained from TG‐DSC are well correlated and supported by the results from FTIR spectroscopy.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136061947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry 用全反射x射线荧光和电感耦合等离子体光学发射光谱法定量膳食补充剂中的元素

4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-09-15 DOI: 10.1002/xrs.3402

Nikolai V. Alov, Dmitry V. Danilov, Pavel Yu. Sharanov, Valentin G. Semenov, Vitaly V. Panchuk, Sergey S. Savinov, Maria M. Khaydukova

{"title":"Quantification of elements in dietary supplements by total reflection x‐ray fluorescence and inductively coupled plasma optical emission spectrometry","authors":"Nikolai V. Alov, Dmitry V. Danilov, Pavel Yu. Sharanov, Valentin G. Semenov, Vitaly V. Panchuk, Sergey S. Savinov, Maria M. Khaydukova","doi":"10.1002/xrs.3402","DOIUrl":"https://doi.org/10.1002/xrs.3402","url":null,"abstract":"Abstract The main purpose of this study was the comparison of the results of quantification obtained via different sample preparation approaches such as microwave‐assisted wet digestion (MAWD) and suspension preparation. Two total reflection x‐ray fluorescence (TXRF) spectrometers equipped with Mo x‐ray tubes were used to compare results obtained via two different paths of sample preparations which would further be compared to the conventional way of analysis by inductively coupled plasma optical emission spectrometry (ICP‐OES) including MAWD. Three dietary supplement samples with different sets and concentrations of elements were analyzed. The benefits and limitations of the simplified path of sample preparation were highlighted. A round‐robin test between TXRF and ICP‐OES was discussed. Accuracy as the percentage of recovery in all measurements ranged from 80 to 120. Precision for all results did not exceed 8% for TXRF and 5% for ICP‐OES. Limits of quantification by TXRF are ranged from 1 to 0.01 mg/pill for different elements. It was shown that suspension preparation of samples might be a useful response to increasing demand for quality control of dietary supplements since it is less time consuming and cost efficient.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135396761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detecting electrochemical changes in a nickel–zinc battery by operando x‐ray computed‐tomography analysis during charge–discharge tests 利用operando x射线计算机断层扫描分析在充放电试验中检测镍锌电池的电化学变化

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-09-07 DOI: 10.1002/xrs.3400

Daichi Kohmoto, K. Miyazaki, Masahito Morita, K. Fukuda, Takeshi Abe

{"title":"Detecting electrochemical changes in a nickel–zinc battery by operando x‐ray computed‐tomography analysis during charge–discharge tests","authors":"Daichi Kohmoto, K. Miyazaki, Masahito Morita, K. Fukuda, Takeshi Abe","doi":"10.1002/xrs.3400","DOIUrl":"https://doi.org/10.1002/xrs.3400","url":null,"abstract":"This study developed a method to detect and analyze deterioration in sections of a battery during charge–discharge tests in real time. This method is based on a time‐series analysis using x‐ray computed tomography, three‐dimensional reconstruction of the battery volume, and unsupervised machine learning. The developed method detects not only electrochemical changes in a battery through the conventional voltage‐capacity diagram but also physical changes such as the deterioration of the parts of a battery that cannot be found via human inspection directly from the sliced images of the three‐dimensional reconstructed volumes. Furthermore, the characteristics of these changes inside a battery can be captured through precise analysis using persistent homology, a mathematical machinery, at degrees 0 and 1. This demonstrates that our method can capture both continuous and discrete structural changes (e.g., a continuous deformation of active materials and compounds that are precipitated randomly in the electrolytes) within a battery. As a by‐product, the start of the venting system implemented near the anode of a battery can be detected using the method from a specific cycle during the charge–discharge tests.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45012517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ observation of electrochemical reaction of Zn primer steel plate in NaCl solution using confocal micro‐x‐ray fluorescence imaging 用共聚焦微x射线荧光成像原位观察锌底漆钢板在NaCl溶液中的电化学反应

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-09-05 DOI: 10.1002/xrs.3401

T. Matsuyama, Shota Sonoda, Tomoki Fuchita, Shinji Sakashita, Kouichi Tsuji

{"title":"In situ observation of electrochemical reaction of Zn primer steel plate in NaCl solution using confocal micro‐x‐ray fluorescence imaging","authors":"T. Matsuyama, Shota Sonoda, Tomoki Fuchita, Shinji Sakashita, Kouichi Tsuji","doi":"10.1002/xrs.3401","DOIUrl":"https://doi.org/10.1002/xrs.3401","url":null,"abstract":"Steel plates have been widely used in bridges, vehicle bodies, guardrails, and so forth. Generally, to improve corrosion resistance, the surface of a steel plate is coated with a Zn layer. However, when the coated steel plate is scratched by external factors, the corrosion resistance decreases. Therefore, it is important to elucidate the elution processes of elements in coated layers and steel plates to develop new coated films and improve corrosion‐resistant techniques. During corrosion, an elution reaction between the coated metal and Fe (anodic reaction) and a reduction reaction of oxygen (cathodic reaction) occur. Confocal micro‐x‐ray fluorescence imaging was employed to visualize the elution processes at the anodic and cathodic steel plates. A Zn primer steel plate was scratched and then immersed in sodium chloride solution. The Zn elution process at the anodic side was observed when a constant current was applied to the two steel plates by a galvanostat. The Fe elution process did not occur, and we believe that the sacrificial protection of Zn inhibited the process. The elutions of Zn and Fe were not observed on the cathodic side of the steel plate. Using the proposed method, we successfully visualized the elemental distributions at the anodic and cathodic sides of the steel plates.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42145899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brief overview of x‐ray fluorescence applications in Mongolian brown coal x射线荧光在蒙古褐煤中的应用综述

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-08-31 DOI: 10.1002/xrs.3399

Z. Damdinsuren, P. Zuzaan, B. Damdinsuren

引用次数: 0

Exploring the colour palette of Wasily Kandinsky: The case study of Spitz‐Rund (1925) 探索瓦西里·康定斯基的调色板:Spitz‐Rund(1925)的案例研究

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-08-31 DOI: 10.1002/xrs.3397

Chiara Ricci, Valeria Ponza, Francesco Paolo Romano, C. Caliri, Claudia Conti, A. Botteon, E. Possenti, Dominique Scalarone, M. Cardinali, Alessandra Bassi, Sara Abram, Luca Avataneo, Daniele Demonte, Federico Di Iorio, Melissa David, C. Miliani, Angela Fabrizia Previtali, A. Piccirillo

{"title":"Exploring the colour palette of Wasily Kandinsky: The case study of Spitz‐Rund (1925)","authors":"Chiara Ricci, Valeria Ponza, Francesco Paolo Romano, C. Caliri, Claudia Conti, A. Botteon, E. Possenti, Dominique Scalarone, M. Cardinali, Alessandra Bassi, Sara Abram, Luca Avataneo, Daniele Demonte, Federico Di Iorio, Melissa David, C. Miliani, Angela Fabrizia Previtali, A. Piccirillo","doi":"10.1002/xrs.3397","DOIUrl":"https://doi.org/10.1002/xrs.3397","url":null,"abstract":"The study and conservation of a painting by Wasily Kandinsky, titled Spitz‐Rund and dated to 1925, was carried out at the Centro per la Conservazione ed il Restauro dei Beni Culturali “La Venaria Reale” 2018 and 2021. This work, owned by the Galleria d'Arte Moderna e Contemporanea of Bergamo (GAMeC), was created with oil paints on cardboard, and later glued onto a wooden support. A first phase of the project entailed a thorough scientific investigation of the artist's materials and techniques by means of a multi‐analytical approach, including both non‐invasive and micro‐invasive techniques. The present contribution discusses some of the most relevant results obtained from scientific analyses on Kandinsky's masterpiece. The painting stratigraphy and colour palette were investigated using multispectral imaging, spot XRF and in situ Raman analyses. Micro‐samples were also taken and analysed with FTIR spectroscopy, Py‐GC/MS, optical microscopy and SEM–EDX. Additional investigations using MA‐XRF provided further insight into the distribution of various chemical elements, proving essential to deepen our knowledge of the painting and to integrate the information obtained from other analytical techniques. The study highlighted several similarities between Spitz‐Rund and other Kandinsky's artworks and made it possible to gain a broader understanding of the artist's technique during the Bauhaus period (1922–1933).","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47546175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Applicability of total reflection x‐ray fluorescence for heavy metal analysis in Lake Baikal sponges 全反射x射线荧光在贝加尔湖海绵重金属分析中的适用性

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-08-24 DOI: 10.1002/xrs.3396

G. Pashkova, A. Nikonova, S. D. Dylgerova, E. Chuparina, A. Maltsev, A. N. Zhilicheva, O. Belozerova, L. P. Paradina, O. Glyzina, I. Khanaev

{"title":"Applicability of total reflection x‐ray fluorescence for heavy metal analysis in Lake Baikal sponges","authors":"G. Pashkova, A. Nikonova, S. D. Dylgerova, E. Chuparina, A. Maltsev, A. N. Zhilicheva, O. Belozerova, L. P. Paradina, O. Glyzina, I. Khanaev","doi":"10.1002/xrs.3396","DOIUrl":"https://doi.org/10.1002/xrs.3396","url":null,"abstract":"Oxidative stress of Lake Baikal organisms can be caused by pollution of nearshore with anionic surfactants or heavy metals. Some specific heavy metals are essential for aquatic organisms. At present, there are no data concerning heavy metal content caused by anthropogenic pollution or chemotaxonomic features of Baikal sponges. Here, we consider the applicability of total reflection x‐ray fluorescence (TXRF) to analyze heavy metals in Lubomirskia baikalensis to fill this gap. It was shown that TXRF method can be successfully applied to the fast and reliable quantification of Cu, Zn, Fe, and Mn in this object. Evaluation of different sample treatment procedures showed that the acid digestion by HNO3/H2O2 mixture is an optimal procedure for the preparation of sponges compared with suspension preparation. It helps to improve sensitivity, eliminate the effects of particle size and specimen heterogeneity. The total uncertainty of the TXRF results associated with the sample preparation, taking, depositing, and measuring of the specimen was 6%–18% for Mn, 3%–5% for Cu, 5%–12% for Fe, and 4%–5% for Zn. To validate the developed method, the TXRF results were compared with the data obtained by wavelength dispersive x‐ray fluorescence spectrometry. A good agreement of results was achieved. TXRF data show the dominance of essential heavy metals in L. baikalensis (n = 14) among other heavy metals. Correlations between Cu/Zn contents (R2 = 0.515) as well as between Fe/Mn contents (R2 = 0.972) can be explained by the contribution of them to L. baikalensis antioxidant system.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48084050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Scanning macro x‐ray fluorescence spectroscopy maps for matching 17th century paintings color areas to different earth pigments uses and for investigating attribution issues 扫描宏观x射线荧光光谱图，将17世纪绘画的颜色区域与不同的土颜料用途相匹配，并用于调查归属问题

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-08-23 DOI: 10.1002/xrs.3398

Marco Colombo, F. Muench, P. Hoffmann, Jochen Sander, W. Ensinger

{"title":"Scanning macro x‐ray fluorescence spectroscopy maps for matching 17th century paintings color areas to different earth pigments uses and for investigating attribution issues","authors":"Marco Colombo, F. Muench, P. Hoffmann, Jochen Sander, W. Ensinger","doi":"10.1002/xrs.3398","DOIUrl":"https://doi.org/10.1002/xrs.3398","url":null,"abstract":"Fe and/or Mn‐containing yellow ochre, red ochre, and umber earth pigments are omnipresent in 17th century paintings. Less common in the materials used in historical paintings of this period is the Fe and Mn‐rich earth pigment sienna. Different uses of historical pigments in one painting by Georg Flegel (1566–1638) and another version of the same painting but of disputed attribution were recently uncovered by means of macro‐x‐ray fluorescence (MA‐XRF) scanning and other non‐invasive analytical techniques. In this paper, an approach solely based upon the correlation of Fe and Mn MA‐XRF maps with the optical image of the painting is compared to the use of Mn/Fe correlation plots. The identification of clusters within a plot of the Fe counts vs. the Mn counts can aid to infer whether an area with a certain color matches with the use of the earth pigments found in the two paintings and to ultimately shed light on the different usage of these pigments. The analytical thresholds found in the Mn/Fe correlation plots allowed to identify clusters differing in composition, which matched an area of a certain color with the earth pigments used therein. This highlighted the differences and similarities between the two paintings, ultimately ascertaining the lower value of the painting of disputed attribution. The analysis of single‐pixel spectra allowed refining the interpretation of specific Mn/Fe correlation plots. The purpose of these data evaluation steps is presented and the limitations of the proposed methodology are also discussed.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":null,"pages":null},"PeriodicalIF":1.2,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41962355","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MA‐XRF analysis of ancient silver coins minted in southern Italy 意大利南部古代银币的MA‐XRF分析

IF 1.2 4区物理与天体物理

X-Ray Spectrometry Pub Date : 2023-08-20 DOI: 10.1002/xrs.3395

J. Brocchieri, R. Vitale, C. Sabbarese

引用次数: 0