Andrea Paul, Zoe Liestmann, Steffen Zaenker, Kristin Vogel, Tanja Broszies, Markus Ostermann
A prerequisite for the recycling of mineral wool is information about the type of material, that is, whether it is glass wool or rock wool. As mineral wool produced before the year 2000 can be potentially carcinogenic, it is furthermore important to distinguish between “old” and “new” wool when handling the material. Based on VDI 3492, it is possible to determine the material and, in the case of rock wool, the age by analyzing the mass fractions of eight oxides, which are the main components of mineral wool. This study presents the X‐ray fluorescence (XRF) analyses of 141 man‐made mineral fibers collected in Germany. Only in a few cases it was not possible to clearly assign the material type. In contrast, the identification of “old” and “new” rock wool posed a challenge as there were many borderline samples. Based on the available data, a chemometric model was developed that can classify “old” and “new” RW with a sensitivity of 93% and 89% and with a specificity of 100% in both cases. However, care must be taken when oxide contents are close to the specification limits. The reason for this mainly lies in the overlapping intervals of key oxides as suggested by VDI 3492, and, to a lesser extent, in the uncertainties typically occurring in the XRF‐based analysis of oxides. With this study, a comprehensive collection and evaluation of XRF data on mineral wool is made available, which can serve as a reference database for future users.
{"title":"How reliable is the X‐ray fluorescence‐based differentiation between glass wool and rock wool and the age classification of rock wool?","authors":"Andrea Paul, Zoe Liestmann, Steffen Zaenker, Kristin Vogel, Tanja Broszies, Markus Ostermann","doi":"10.1002/xrs.3451","DOIUrl":"https://doi.org/10.1002/xrs.3451","url":null,"abstract":"A prerequisite for the recycling of mineral wool is information about the type of material, that is, whether it is glass wool or rock wool. As mineral wool produced before the year 2000 can be potentially carcinogenic, it is furthermore important to distinguish between “old” and “new” wool when handling the material. Based on VDI 3492, it is possible to determine the material and, in the case of rock wool, the age by analyzing the mass fractions of eight oxides, which are the main components of mineral wool. This study presents the X‐ray fluorescence (XRF) analyses of 141 man‐made mineral fibers collected in Germany. Only in a few cases it was not possible to clearly assign the material type. In contrast, the identification of “old” and “new” rock wool posed a challenge as there were many borderline samples. Based on the available data, a chemometric model was developed that can classify “old” and “new” RW with a sensitivity of 93% and 89% and with a specificity of 100% in both cases. However, care must be taken when oxide contents are close to the specification limits. The reason for this mainly lies in the overlapping intervals of key oxides as suggested by VDI 3492, and, to a lesser extent, in the uncertainties typically occurring in the XRF‐based analysis of oxides. With this study, a comprehensive collection and evaluation of XRF data on mineral wool is made available, which can serve as a reference database for future users.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"12 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183583","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}
Anusheela Das, Chris M. Heirwegh, Ning Gao, William T. Elam, Lawrence A. Wade, Benton C. Clark, Joel A. Hurowitz, Scott J. VanBommel, Michael W. M. Jones, Abigail C. Allwood
In this work, we studied the x‐ray energy dependence of x‐ray beam diameter focused by polycapillary optics. A quantitative beam diameter–energy relation enables more accurate estimation of the element‐specific interrogation area of a sample using the compositional maps produced by a micro‐XRF system. This improves upon our ability to visualize individual beam‐diameter sized mineral grains and in turn directly benefits Planetary Instrument for X‐ray Lithochemistry (PIXL) analyses of martian soil in addition to benefitting other micro‐focused x‐ray fluorescence (XRF) systems. The spatial distribution of an array of characteristic XRF emission lines was measured by sampling via a knife‐edge approach with small motor stepping of the beam across target edges. Data taken as part of this effort, from the Planetary Flight Model (PFM), were limited to only seven beam energies corresponding to the elements Ni, Cu, Se, Ta, Au, Ti and Ba. Hence, we conducted additional analysis using JPL's lab‐based breadboard (LBB) micro‐XRF system, a system that emulates PIXL's functionality where we measured beam diameter corresponding to 18 elements: Na, Mg, Al, Si, Cl, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Se, Sr and Mo. The experimental results were also compared with Monte Carlo simulations. The beam diameter (y)–energy (x) relation that we obtained for LBB was y = 185.79 exp(−0.078x) whose exponential component was then used to get a more accurate relation for the PFM even with the limited data set: y = 227.53 exp(−0.078x). The difference in the two coefficients for the PFM and LBB stems mainly from the difference in the polycapillary optic design, and this work establishes x‐ray beam diameter versus energy relation quantitatively for both the systems.
在这项工作中，我们研究了聚毛细管光学系统聚焦的 X 射线束直径与 X 射线能量的关系。通过定量的光束直径-能量关系，可以利用微型 XRF 系统产生的成分图更准确地估计样品的特定元素探测区域。这提高了我们对单个光束直径大小的矿物颗粒进行可视化的能力，进而直接有益于行星 X 射线岩石化学仪器（PIXL）对火星土壤的分析，并有益于其他微聚焦 X 射线荧光（XRF）系统。通过在目标边缘使用小电机步进光束的刀刃取样方法，对特征 XRF 发射线阵列的空间分布进行了测量。作为这项工作的一部分，从行星飞行模型（PFM）中获取的数据仅限于与 Ni、Cu、Se、Ta、Au、Ti 和 Ba 元素相对应的七种光束能量。因此，我们使用 JPL 的实验室面包板 (LBB) micro-XRF 系统进行了额外的分析，该系统可模拟 PIXL 的功能，我们在该系统中测量了与 18 种元素相对应的光束直径：我们测量了 18 种元素对应的光束直径：Na、Mg、Al、Si、Cl、Ca、Ti、Cr、Mn、Fe、Ni、Cu、Zn、Ga、Ge、Se、Sr 和 Mo。实验结果还与蒙特卡洛模拟结果进行了比较。我们为 LBB 得到的光束直径（y）-能量（x）关系式为 y = 185.79 exp(-0.078x)，然后利用其指数分量为 PFM 得到了更精确的关系式，即使数据集有限：y = 227.53 exp(-0.078x)。PFM 和 LBB 两个系数的差异主要源于聚毛细管光学设计的不同，这项工作为这两个系统定量地建立了 X 射线束直径与能量的关系。
{"title":"Energy dependence of x‐ray beam size produced by polycapillary x‐ray optics","authors":"Anusheela Das, Chris M. Heirwegh, Ning Gao, William T. Elam, Lawrence A. Wade, Benton C. Clark, Joel A. Hurowitz, Scott J. VanBommel, Michael W. M. Jones, Abigail C. Allwood","doi":"10.1002/xrs.3450","DOIUrl":"https://doi.org/10.1002/xrs.3450","url":null,"abstract":"In this work, we studied the x‐ray energy dependence of x‐ray beam diameter focused by polycapillary optics. A quantitative beam diameter–energy relation enables more accurate estimation of the element‐specific interrogation area of a sample using the compositional maps produced by a micro‐XRF system. This improves upon our ability to visualize individual beam‐diameter sized mineral grains and in turn directly benefits Planetary Instrument for X‐ray Lithochemistry (PIXL) analyses of martian soil in addition to benefitting other micro‐focused x‐ray fluorescence (XRF) systems. The spatial distribution of an array of characteristic XRF emission lines was measured by sampling via a knife‐edge approach with small motor stepping of the beam across target edges. Data taken as part of this effort, from the Planetary Flight Model (PFM), were limited to only seven beam energies corresponding to the elements Ni, Cu, Se, Ta, Au, Ti and Ba. Hence, we conducted additional analysis using JPL's lab‐based breadboard (LBB) micro‐XRF system, a system that emulates PIXL's functionality where we measured beam diameter corresponding to 18 elements: Na, Mg, Al, Si, Cl, Ca, Ti, Cr, Mn, Fe, Ni, Cu, Zn, Ga, Ge, Se, Sr and Mo. The experimental results were also compared with Monte Carlo simulations. The beam diameter (<jats:italic>y</jats:italic>)–energy (<jats:italic>x</jats:italic>) relation that we obtained for LBB was <jats:italic>y</jats:italic> = 185.79 exp(−0.078<jats:italic>x</jats:italic>) whose exponential component was then used to get a more accurate relation for the PFM even with the limited data set: <jats:italic>y</jats:italic> = 227.53 exp(−0.078<jats:italic>x</jats:italic>). The difference in the two coefficients for the PFM and LBB stems mainly from the difference in the polycapillary optic design, and this work establishes x‐ray beam diameter versus energy relation quantitatively for both the systems.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"1 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183584","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}
The reliable trace analysis of high‐purity chemicals and environmentally relevant samples is more important than ever and has led to the development of novel analytical methods. Total reflection x‐ray fluorescence (TXRF) analysis is an increasingly known method for the determination of heavy metals at low concentration levels in environmental and industrial sample systems. However, there is still a need for optimization to obtain fast and precise results, especially for highly saline samples like brines and salts used in battery production or sea water. In this study, multi‐element standard solutions containing analytes like Co, Cr, Cu, Fe, Mn, Ni, or Zn in a concentration range between 0.1 and 1 mg/L were analyzed in the matrices lithium carbonate (Li2CO3) and artificial seawater (ASW) containing 1000 mg/L Li and 24,000 mg/L NaCl, respectively, leading to matrix‐analyte ratios of up to 240,000:1. Different sample preparation methods were compared in order to achieve the highest possible repeatability (1) and signal‐to‐noise ratios (2) with the least amount of time (3). Various parameters such as sample volume, drying conditions, time, temperature and additive concentration were varied. The relative standard deviation (RSD%) was used as a measure of repeatability for three replicates per sample. For lithium carbonate, a method with a preparation time of only 2 min and a measurement time of 500 s could be developed, which allowed to obtain RSD% well below 5%, a high linearity (R2 > 0.99) and limits of detection (LOD) in the range of 30 μg/L to 60 μg/L for most elements. Seawater analysis could be optimized with respect to signal‐to‐noise ratio, whereby the Kα‐line of the internal standard (Ga) was used for evaluation and the use of a desiccator was found to yield the best results.
{"title":"Total reflection x‐ray fluorescence analysis of trace elements in highly saline samples","authors":"Bastian Wiggershaus, Eric Franke, Carla Vogt","doi":"10.1002/xrs.3448","DOIUrl":"https://doi.org/10.1002/xrs.3448","url":null,"abstract":"The reliable trace analysis of high‐purity chemicals and environmentally relevant samples is more important than ever and has led to the development of novel analytical methods. Total reflection x‐ray fluorescence (TXRF) analysis is an increasingly known method for the determination of heavy metals at low concentration levels in environmental and industrial sample systems. However, there is still a need for optimization to obtain fast and precise results, especially for highly saline samples like brines and salts used in battery production or sea water. In this study, multi‐element standard solutions containing analytes like Co, Cr, Cu, Fe, Mn, Ni, or Zn in a concentration range between 0.1 and 1 mg/L were analyzed in the matrices lithium carbonate (Li<jats:sub>2</jats:sub>CO<jats:sub>3</jats:sub>) and artificial seawater (ASW) containing 1000 mg/L Li and 24,000 mg/L NaCl, respectively, leading to matrix‐analyte ratios of up to 240,000:1. Different sample preparation methods were compared in order to achieve the highest possible repeatability (1) and signal‐to‐noise ratios (2) with the least amount of time (3). Various parameters such as sample volume, drying conditions, time, temperature and additive concentration were varied. The relative standard deviation (RSD%) was used as a measure of repeatability for three replicates per sample. For lithium carbonate, a method with a preparation time of only 2 min and a measurement time of 500 s could be developed, which allowed to obtain RSD% well below 5%, a high linearity (<jats:italic>R</jats:italic><jats:sup>2</jats:sup> > 0.99) and limits of detection (LOD) in the range of 30 μg/L to 60 μg/L for most elements. Seawater analysis could be optimized with respect to signal‐to‐noise ratio, whereby the <jats:italic>K</jats:italic><jats:sub><jats:italic>α</jats:italic></jats:sub>‐line of the internal standard (Ga) was used for evaluation and the use of a desiccator was found to yield the best results.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"174 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183585","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}
In this case, electron probe microanalyzer (EPMA) and micro x‐ray fluorescence (μ‐XRF) techniques were employed to the analysis of white porcelain species artifacts unearthed from the Gangguantun Kiln (10–13th century) and investigate for its production processes' details by microanalysis. Microscopic observation reveals the presence of inclusions in the ceramic bodies across different historical periods, with notable disparities in the form and quantity of these inclusions between samples from distinct periods. By employing EPMA mapping and particle analysis, it was discerned that the inclusions in the late‐period white porcelain are primarily composed of calcium‐rich materials, exhibiting a uniform composition and structure. The uniformity in particle size distribution strongly suggests that these inclusions are temper with certain purpose, deliberately and intentionally introduced by skilled artisans following a controlled processing method. This discovery rectifies the previously held notion that the white porcelain products from the Gangguantun Kiln were rustic and coarse, with the “black iron spots” or other inclusion being viewed as impurities. Furthermore, these temper materials, likely treated before incorporation, may have played a role in enhancing the firing process of ceramics. This revelation sheds light on the distinctive technological aspects of ceramic craftsmanship during the Liao and Jin dynasty periods. It serves as a crucial reference for delving into the technical choices and integration within the handicraft industry of northern China during the Liao‐Jin era, as well as the unique regional characteristics and stylistic features of the period. This significantly enriches our comprehension of this historical era.
{"title":"X‐ray microanalysis and mapping for white ceramics unearthed from Gangguantun Kiln of Liaoyang, Liaoning province, China","authors":"Guiyun Shen, Jinyu Yu, Baolong Zhang, Yuanyuan Wu, Jun Zhou, Naisheng Li, Jian Zhu","doi":"10.1002/xrs.3449","DOIUrl":"https://doi.org/10.1002/xrs.3449","url":null,"abstract":"In this case, electron probe microanalyzer (EPMA) and micro x‐ray fluorescence (μ‐XRF) techniques were employed to the analysis of white porcelain species artifacts unearthed from the Gangguantun Kiln (10–13th century) and investigate for its production processes' details by microanalysis. Microscopic observation reveals the presence of inclusions in the ceramic bodies across different historical periods, with notable disparities in the form and quantity of these inclusions between samples from distinct periods. By employing EPMA mapping and particle analysis, it was discerned that the inclusions in the late‐period white porcelain are primarily composed of calcium‐rich materials, exhibiting a uniform composition and structure. The uniformity in particle size distribution strongly suggests that these inclusions are temper with certain purpose, deliberately and intentionally introduced by skilled artisans following a controlled processing method. This discovery rectifies the previously held notion that the white porcelain products from the Gangguantun Kiln were rustic and coarse, with the “black iron spots” or other inclusion being viewed as impurities. Furthermore, these temper materials, likely treated before incorporation, may have played a role in enhancing the firing process of ceramics. This revelation sheds light on the distinctive technological aspects of ceramic craftsmanship during the Liao and Jin dynasty periods. It serves as a crucial reference for delving into the technical choices and integration within the handicraft industry of northern China during the Liao‐Jin era, as well as the unique regional characteristics and stylistic features of the period. This significantly enriches our comprehension of this historical era.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"33 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142183586","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}
Information about the elemental compositions of coal and coal ash is very important to solve some issues related to both technological processes and the control of environmental pollution. It is known that the coal and coal ash samples often contain significant amounts of valuable as well as toxic components (e.g., V, Cr, Со, Ni, Cu, Zn, As, Sr, Ba, Pb, Ga, and Ge) that can be successfully determined by X‐ray fluorescence (XRF) spectrometry. This review briefly discusses the development of XRF equipment, elements of interest determined by XRF, and common sample preparation procedures. The calculation of relative intensities of analytical lines of some elements and scattered radiation is presented to demonstrate possible matrix effects in XRF analysis. Possibilities and drawbacks of total reflection XRF (TXRF) are described in detail as the coal and ash analysis is a relatively new area of application of TXRF method. The review also presents examples of the application of the XRF method for analysis of waste from coal preparation plants and thermal power plants to assess their prospects and to choose a method for extracting individual elements. Among the reviewed publications, several works are devoted to the study of the element distributions, especially rare earth elements, in coals, coal ash, and coal waste.
{"title":"Study of the chemical composition of coal and coal ash by X‐ray fluorescence method: A review","authors":"Anatoly G. Revenko, Galina V. Pashkova","doi":"10.1002/xrs.3444","DOIUrl":"https://doi.org/10.1002/xrs.3444","url":null,"abstract":"Information about the elemental compositions of coal and coal ash is very important to solve some issues related to both technological processes and the control of environmental pollution. It is known that the coal and coal ash samples often contain significant amounts of valuable as well as toxic components (e.g., V, Cr, Со, Ni, Cu, Zn, As, Sr, Ba, Pb, Ga, and Ge) that can be successfully determined by X‐ray fluorescence (XRF) spectrometry. This review briefly discusses the development of XRF equipment, elements of interest determined by XRF, and common sample preparation procedures. The calculation of relative intensities of analytical lines of some elements and scattered radiation is presented to demonstrate possible matrix effects in XRF analysis. Possibilities and drawbacks of total reflection XRF (TXRF) are described in detail as the coal and ash analysis is a relatively new area of application of TXRF method. The review also presents examples of the application of the XRF method for analysis of waste from coal preparation plants and thermal power plants to assess their prospects and to choose a method for extracting individual elements. Among the reviewed publications, several works are devoted to the study of the element distributions, especially rare earth elements, in coals, coal ash, and coal waste.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"14 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777683","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}
Svetlana I. Shtel'makh, Alena N. Zhilicheva, Irina E. Vasil'eva
The wavelength‐dispersive X‐ray fluorescence (WDXRF) spectrometry was applied to determine Na, Mg, Al, P, S, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Sr, Ba, and Pb concentrations in the needles of dwarfish spruce Picea canadensis conica and the blue prickly spruce Picea pungens glauca, as well in technogenic soil of Irkutsk city, in which these spruce species grow. All measurements were performed in vacuum using WDXRF spectrometer S8 TIGER produced by Bruker AXS, Germany. The calculated values of instrumental limit of detection (ILD) ranged from 0.5 for Ni to 67 mg/kg for Al for soil certified reference materials (CRMs) such as OOKO151 (light chestnut soil) and from 0.2 for Cu and Ni to 18–24 mg/kg for Na for the plant CRMs such as LB‐1 (birch leaf) and EC‐1 (Canadian waterweed). The repeatability is satisfactory. The values of relative standard deviations (RSDs) do not exceed 15% for soils and available plant material. With calculated T‐statistics, it was found that the WDXRF data do not contain systematic errors. The values of relative discrepancy for WDXRF, total reflection X‐ray fluorescence (TXRF) spectrometry, and atomic emission spectrometry with arc discharge (d.c. arc‐AES) results do not exceed 30% for studied elements.
{"title":"Determination of macro‐ and microelements concentrations by wavelength‐dispersive X‐ray fluorescence spectrometry in the objects of the technogenic ecosystem","authors":"Svetlana I. Shtel'makh, Alena N. Zhilicheva, Irina E. Vasil'eva","doi":"10.1002/xrs.3443","DOIUrl":"https://doi.org/10.1002/xrs.3443","url":null,"abstract":"The wavelength‐dispersive X‐ray fluorescence (WDXRF) spectrometry was applied to determine Na, Mg, Al, P, S, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Sr, Ba, and Pb concentrations in the needles of dwarfish spruce <jats:italic>Picea canadensis conica</jats:italic> and the blue prickly spruce <jats:italic>Picea pungens glauca</jats:italic>, as well in technogenic soil of Irkutsk city, in which these spruce species grow. All measurements were performed in vacuum using WDXRF spectrometer S8 TIGER produced by Bruker AXS, Germany. The calculated values of instrumental limit of detection (ILD) ranged from 0.5 for Ni to 67 mg/kg for Al for soil certified reference materials (CRMs) such as OOKO151 (light chestnut soil) and from 0.2 for Cu and Ni to 18–24 mg/kg for Na for the plant CRMs such as LB‐1 (birch leaf) and EC‐1 (Canadian waterweed). The repeatability is satisfactory. The values of relative standard deviations (RSDs) do not exceed 15% for soils and available plant material. With calculated T‐statistics, it was found that the WDXRF data do not contain systematic errors. The values of relative discrepancy for WDXRF, total reflection X‐ray fluorescence (TXRF) spectrometry, and atomic emission spectrometry with arc discharge (d.c. arc‐AES) results do not exceed 30% for studied elements.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"326 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141777684","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}
B. P. E. Tee, B. Ganly, J. D. Mcllquham, P. Giang, Y. Van Haarlem
A method to fit Compton profiles in x‐ray fluorescence (XRF) spectroscopy using a line shape calculated from first principles is proposed. The fitting procedure incorporates the Compton profile calculations and the double Compton scattering line shape algorithm. The results demonstrate the effectiveness of the fitting approach in accurately describing the measured scattering spectra, with good agreement observed between the fit and experimental data. The findings of this study can be used for more accurate characterization of the scattering peaks in XRF spectroscopy.
本文提出了一种利用第一原理计算出的线形拟合 X 射线荧光 (XRF) 光谱中康普顿剖面的方法。拟合程序结合了康普顿剖面计算和双康普顿散射线形算法。结果表明，拟合方法能有效准确地描述测量到的散射光谱，拟合结果与实验数据之间具有良好的一致性。这项研究的结果可用于更准确地描述 XRF 光谱中的散射峰。
{"title":"Fitting Compton peaks from first principles in x‐ray fluorescence spectra","authors":"B. P. E. Tee, B. Ganly, J. D. Mcllquham, P. Giang, Y. Van Haarlem","doi":"10.1002/xrs.3441","DOIUrl":"https://doi.org/10.1002/xrs.3441","url":null,"abstract":"A method to fit Compton profiles in x‐ray fluorescence (XRF) spectroscopy using a line shape calculated from first principles is proposed. The fitting procedure incorporates the Compton profile calculations and the double Compton scattering line shape algorithm. The results demonstrate the effectiveness of the fitting approach in accurately describing the measured scattering spectra, with good agreement observed between the fit and experimental data. The findings of this study can be used for more accurate characterization of the scattering peaks in XRF spectroscopy.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"61 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141577723","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}
P. Zuzaan, Z. Batsuren, O. Enkhtuya, E. Sosorburam, Bolortuya Damdinsuren
This research presents the contents of K, Ca, Ti, Mn, Fe, Ni, Cu, Zn, Rb, Sr, and Pb in lichen and moss samples used as biomonitors of air pollution collected in Ulaanbaatar city. X‐ray fluorescence (XRF) methods were used, employing for excitation a Pd X‐ray tube with a molybdenum secondary target. Matrix effects were corrected by the use of normalization for the coherent and incoherent scattered peak, in this way the determination is more efficient. For quality control of the results, comparisons were made with results from other certified laboratories. No significant differences were found between the different techniques. The elemental distribution patterns obtained for each metal were associated with different pollution sources, thus contributing to the assessment of air pollution in Ulaanbaatar.
本研究介绍了在乌兰巴托市采集的作为空气污染生物监测器的地衣和苔藓样本中 K、Ca、Ti、Mn、Fe、Ni、Cu、Zn、Rb、Sr 和 Pb 的含量。采用 X 射线荧光 (XRF) 方法，使用带有钼二级靶的钯 X 射线管进行激发。通过对相干和非相干散射峰进行归一化处理，校正了基质效应，从而提高了测定效率。为了对结果进行质量控制，与其他认证实验室的结果进行了比较。不同技术之间没有发现明显差异。所获得的每种金属的元素分布模式都与不同的污染源有关，因此有助于评估乌兰巴托的空气污染情况。
{"title":"Analysis of lichen and moss samples by the EDXRF method","authors":"P. Zuzaan, Z. Batsuren, O. Enkhtuya, E. Sosorburam, Bolortuya Damdinsuren","doi":"10.1002/xrs.3442","DOIUrl":"https://doi.org/10.1002/xrs.3442","url":null,"abstract":"This research presents the contents of K, Ca, Ti, Mn, Fe, Ni, Cu, Zn, Rb, Sr, and Pb in lichen and moss samples used as biomonitors of air pollution collected in Ulaanbaatar city. X‐ray fluorescence (XRF) methods were used, employing for excitation a Pd X‐ray tube with a molybdenum secondary target. Matrix effects were corrected by the use of normalization for the coherent and incoherent scattered peak, in this way the determination is more efficient. For quality control of the results, comparisons were made with results from other certified laboratories. No significant differences were found between the different techniques. The elemental distribution patterns obtained for each metal were associated with different pollution sources, thus contributing to the assessment of air pollution in Ulaanbaatar.","PeriodicalId":23867,"journal":{"name":"X-Ray Spectrometry","volume":"60 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141548227","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}
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