Journal of Analytical Atomic Spectrometry最新文献

{"title":"Application of mobile-macroscale scanning X-ray fluorescence (mobile-MA-XRF) imaging in paleontology: analyses of vertebrate fossil specimens from Messel conserved in different solid and liquid media†","authors":"Marco Colombo, Thomas Lehmann, Wolfgang Ensinger and Valentina Rossi","doi":"10.1039/D4JA00310A","DOIUrl":"https://doi.org/10.1039/D4JA00310A","url":null,"abstract":"<p >Cutting-edge analytical instrumentation is increasingly being developed and applied to the analysis of fossils. X-ray fluorescence (XRF) imaging spectroscopy is a powerful tool to resolve the elemental chemistry of fossil specimens. Most of the XRF application to study fossils is carried out at dedicated synchrotron radiation XRF beamlines. Recent studies used laboratory scanners, <em>i.e.</em> stationary instruments with a measurement chamber or mobile ones to tackle paleontological questions. The application of these new XRF systems on fossils is still relatively limited and clear protocols for the acquisition and processing of the XRF data are currently lacking. Here, we present the use of mobile-macroscale scanning XRF (mobile-MA-XRF) imaging for the <em>in situ</em> analyses of the elemental chemistry of fossil vertebrates from the Messel biota (∼48 Ma, Eocene), including amphibians, reptiles, mammals and birds. We investigate the usefulness of mobile-MA-XRF to detect tissue-specific elemental signatures in fossils preserved in solid resin, liquid glycerin and water. We found remarkable tissue-specific chemical signatures preserved in almost all specimens analyzed. Hair and feathers are associated with S and Ti, abdominal tissues with Cu and Zn and stomach contents, <em>e.g.</em>, seeds, are associated with Ni, Cu, and Zn. We provide a detailed protocol for acquisition and processing of MA-XRF data and a critical discussion of the application of this approach to paleontological research. Our work sets the foundation for applying MA-XRF to the analyses of those fossils that cannot be measured at synchrotron facilities and/or with stationary laboratory scanners due to their dimensions, weights and conservation mode.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 989-1005"},"PeriodicalIF":3.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00310a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An automatic efficiency calibration method with high precision for HPGe detectors","authors":"Lahcen El Amri, Hamid Amsil, Omar El Bounagui, Brahim Elmokhtari, Hamid Bounouira and Abdessamad Didi","doi":"10.1039/D4JA00454J","DOIUrl":"https://doi.org/10.1039/D4JA00454J","url":null,"abstract":"<p >The method used by gamma spectrum analysis software often has a single formula to calibrate efficiency, which is imposed at some reference point sometimes located far from the efficiency curve. The method presented in this article uses four different formulas (can also use more than four) and by using a computer algorithm the efficiency can be automatically calibrated by choosing the closest formula to each point of the data efficiency. This method suggests dividing the energies into three categories: low, medium and high energies. Subsequently, the average of the errors is calculated for each suggested formula, which allows choosing the most accurate formula for each energy range. Finally, a comprehensive efficiency curve is obtained by merging the three selected formulas. In addition, free and open source software named AEC (Automatic Efficiency Calibration) has been created to implement this method. This software offers users an additional tool to existing gamma spectrum analysis software in addition to specifying the efficiency calibration. The AEC is available on GitHub (https://github.com/LAHCEN-EL-AMRI/AEC-v1) and a detailed PDF guide is also included in the software to simplify its use (https://github.com/LAHCEN-EL-AMRI/AEC-v1/blob/main/Doc/guide.pdf).</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1106-1112"},"PeriodicalIF":3.1,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761618","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a new method for analyzing carbonate-associated phosphate through inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS)","authors":"Wei Liu, Limin Zhou and Jundong Hu","doi":"10.1039/D4JA00429A","DOIUrl":"https://doi.org/10.1039/D4JA00429A","url":null,"abstract":"<p >Phosphorus, a critical biogeochemical element regulating marine productivity, poses analytical challenges in carbonate matrices using conventional spectrophotometric methods. This study establishes novel analytical protocols employing inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS) with oxygen reaction mode and argon gas dilution (AGD)-ICP-MS/MS for simultaneous quantification of carbonate-associated phosphate (CAP) and rare earth elements plus yttrium (REE + Y). Through systematic optimization, we implemented a 2% v/v acetic acid partial leaching protocol for CAP extraction. Comparative evaluation of collision/reaction cell modes revealed that the triple quadrupole configuration with O<small>₂</small> reaction gas mode (TQ-O<small>₂</small>) demonstrated superior interference elimination capabilities, particularly effective in resolving the [<small>¹⁴</small>N<small>¹⁶</small>O<small>¹</small>H]<small>⁺</small> isobaric interference on <small>³¹</small>P<small>⁺</small> (with a mass shift to <em>m</em>/<em>z</em> 47 for [<small>³¹</small>P<small>¹⁶</small>O]<small>⁺</small>). The developed methods achieved detection limits of 0.15 μg L<small>⁻¹</small> (ICP-MS/MS) and 2.56 μg L<small>⁻¹</small> (AGD-ICP-MS/MS) for phosphorus, with good determination coefficient (<em>R</em><small>^<em>2</em></small> &gt; 0.999). Method validation using four geochemical certified reference materials (JDo-1, AGV-2, BHVO-2 and BCR-2) demonstrated excellent agreement with certified values. The CAP/(Ca + Mg) ratios for JDo-1, SRM 1d, and GBW07108 were determined to provide interlaboratory comparative information. This multi-parameter analytical framework provides enhanced throughput for paleoceanographic studies requiring coupled nutrient (P) and redox proxy (REE + Y) analysis.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 967-974"},"PeriodicalIF":3.1,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lithium isotope analysis on the Neoma MS/MS MC-ICP-MS","authors":"Sean R Scott, Gabrielle L Turner, Brandy N Gartman, Sonia Alcantar Anguiano, Kali M Melby, Barbara E Allen, Travis D Minton, Matthew A RisenHuber and Kirby P Hobbs","doi":"10.1039/D4JA00419A","DOIUrl":"https://doi.org/10.1039/D4JA00419A","url":null,"abstract":"<p >Lithium isotopes are measured routinely using multi-collector inductively coupled plasma mass spectrometry due to the high throughput and high measurement precision capabilities of this technique. To obtain high precision isotopic data, lithium is generally purified through ion exchange resins to reduce compositional matrix effects and minimize isobaric interferences when analyzed in solution. In this work, we demonstrate that the ThermoScientific Neoma MS/MS MC-ICP-MS can be used to measure high precision lithium isotopic ratios after purification for a variety of geological and environmental matrices. While the double-Wien filter of the Neoma MS/MS requires additional considerations for measuring lithium isotopes compared to previous generation instruments, high precision lithium isotope ratios can be achieved with proper tuning of the lenses. We provide a strategy for optimization of <small>⁶</small>Li/<small>⁷</small>Li measurements for precision and measurement stability, and show our long-term reproducibility for NIST924a and IRMM-016 was 0.8‰ and 0.5‰, respectively. In addition, we provide new <small>⁶</small>Li/<small>⁷</small>Li measurements for several environmental reference materials without Li isotope data in the literature, including NIST SRMs 1646a, 2706, 2711a, 2780a, and 4350b.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1098-1105"},"PeriodicalIF":3.1,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00419a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mapping of lanthanide-tagged proteins on western blot paper using microextraction-inductively coupled plasma-mass spectrometry†","authors":"Jordan S. Stanberry, Reagan Meeks, Ryan W. Peterson, Hunter B. Andrews, Amber N. Bible, Sarah Szakas, Brian C. Sanders and Benjamin T. Manard","doi":"10.1039/D4JA00440J","DOIUrl":"https://doi.org/10.1039/D4JA00440J","url":null,"abstract":"<p >A microextraction (ME) sampling system, paired with inductively coupled plasma-mass spectrometry (ICP-MS), was employed to spatially analyze proteins tagged with lanthanum (La), gadolinium (Gd), or terbium (Tb) on the surface of western blot paper. The proteins were covalently tagged, separated <em>via</em> gel electrophoresis, and transferred to western blot paper for analysis by ME-ICP-MS. The ME-ICP-MS method enables the direct sampling of the tagged species on the western blot paper, without any sample preparation. Traditionally, the tagged analyte would need to be stained, excised, and digested to be analyzed by ICP-MS for its elemental and isotopic characterization. Preliminary detection limits for the ME-ICP-MS method applied to western blot paper were established to be 564, 54, and 2.5 fg for La, Gd, and Tb, respectively. The developed ME-ICP-MS method was compared to laser ablation (LA) ICP-MS, another direct solid sampling technique; it was readily determined that ME-ICP-MS can effectively map the elemental constituents on the western blot paper with comparable analysis time and measurement sensitivity. The analysis time per 2 × 4 mm extraction is ∼1 minute; if protein spots are directly targeted (rather than systematically mapping the entire blot paper), the analysis time per protein spot is ∼1 min. This developed method proved to be fast, effective, and accessible for correlating protein molecular weight with the detection of the inorganic tagant. The ME-ICP-MS approach could be widely applicable in research areas that involve metal-tagged protein bioconjugates, such as in the development of diagnostic and therapeutic agents and other biochemical probes.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 961-966"},"PeriodicalIF":3.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00440j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761632","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Accurate determination of Ti stable isotopes in Ti-rich minerals using nanosecond LA-MC-ICP-MS†","authors":"Hong Liu, Zhaochu Hu, Liyuan Qing, Jingliang Guo, Wen Zhang, Xiuhong Liao, Tao Luo, Ming Li and Zaicong Wang","doi":"10.1039/D4JA00404C","DOIUrl":"https://doi.org/10.1039/D4JA00404C","url":null,"abstract":"<p >Mass-dependent titanium (Ti) isotopic variations in Ti-rich minerals as geological tracers are commonly measured by laser ablation (LA) coupled with multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). A high-precision method for <em>in situ</em> Ti stable isotopic analysis in Ti-rich minerals was developed using nanosecond (ns) LA-MC-ICP-MS. Analytical performances of ns-LA-MC-ICP-MS were contrasted with femtosecond (fs) LA-MC-ICP-MS for Ti isotopic analysis in Ti-rich minerals and Ti metal. Matrix effects, more pronounced in ns-LA-MC-ICP-MS, were observed using non-matrix-matched calibration. Wet plasma conditions mitigated these effects compared to dry plasma conditions, effectively eliminating them between rutile and Ti metal using fs-LA-MC-ICP-MS. However, matrix effects persisted between rutile and other Ti-rich minerals (ilmenite, titanite and perovskite), even under wet plasma conditions. Subsequent Ti isotopic analyses of five Ti-rich minerals, using matrix-matched calibration protocols with both techniques, yielded internal precision (δ<small>⁴⁹</small>Ti, 2SE) of ≤0.08‰ at <small>⁴⁹</small>Ti signal intensities &gt;0.6 V with 10<small>¹¹</small> Ω resistors. External reproducibility (δ<small>⁴⁹</small>Ti, 2SD) ranged from ±0.11‰ to ±0.17‰ across the five minerals analyzed by ns-LA-MC-ICP-MS, consistent with the precision achieved by fs-LA-MC-ICP-MS. Results obtained <em>via</em> ns-LA-MC-ICP-MS agreed with those from both fs-LA-MC-ICP-MS and solution nebulization MC-ICP-MS, except for Ti metal, confirming the accuracy of the ns-LA-MC-ICP-MS method. Isotopically homogeneous ilmenite GER16 and titanite MAD12 are proposed as bracketing and/or quality control standards.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1113-1121"},"PeriodicalIF":3.1,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Detection of Li in synthetic slags of Li-ion batteries by laser ablation inductively coupled plasma time of flight mass spectrometry (LA-ICP-ToF-MS)","authors":"Alena Schnickmann, Ciprian Stremtan, Lukas Schlatt, Thomas Schirmer and Thomas Ulrich","doi":"10.1039/D4JA00334A","DOIUrl":"https://doi.org/10.1039/D4JA00334A","url":null,"abstract":"<p >Lithium is one of the most important technological elements and is mainly used in Li-ion traction batteries (LIBs). Due to its high oxygen affinity, recovering this element from, <em>e.g.</em>, batteries is a challenge. In pyrometallurgical processes, Li accumulates in the slag and is currently largely lost. A new pyrometallurgical approach, called “engineered artificial minerals” (EnAM), deals with the modification of slag to enrich elements such as Li in a single phase with a simple chemical structure and favourable properties for processing (<em>e.g.</em> morphology). To maximise the efficiency of this process, the first step is to characterise as accurately as possible the distribution of the target element (here Li) across the phases in the slag. In this article, a combination of an electron-optical and X-ray based method (electron probe microanalysis) with a spatially resolved mass spectrometric method (laser ablation inductively coupled plasma time-of-flight mass spectrometry) is presented to study the distribution of Li in a synthetically produced slag. The combination of LA-ICP-ToF-MS multi elemental imaging with backscattered electron (BSE(Z)) imaging allows the resolution of intricate fine structures and the unambiguous identification of crystalline phases in the slag. Electron optics (backscattered electrons) provides high spatial resolution and mass spectrometry offers high sensitivity to detect Li. This makes it possible to characterise not only the stoichiometrically identifiable phases but also the non-stoichiometric amorphous components. By combining different analytical methods (toolbox), three Li-bearing phases could be clearly identified: the residual melt, Mn<small>₃</small>O<small>₄</small> and LiMnO<small>₂</small>.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1049-1057"},"PeriodicalIF":3.1,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00334a?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High-resolution continuum source quartz tube atomic absorption spectrometry for the determination of As, Sb, Bi, Hg, Se and Te in food and environmental matrices after chemical vapor generation†","authors":"Bettina Dora Szeredai, Tiberiu Frentiu, Norbert Muntean, Adrian-Ioan Dudu and Eniko Covaci","doi":"10.1039/D4JA00468J","DOIUrl":"https://doi.org/10.1039/D4JA00468J","url":null,"abstract":"<p >This study presents a broadly applicable spectrometric method for the determination of As, Sb, Bi, Hg, Se, and Te in food and environmental matrices based on chemical vapor generation high-resolution continuum source quartz tube atomic absorption spectrometry as a sequential method. The samples were subjected to microwave-assisted digestion, followed by the pre-reduction of As(<small>V</small>) and Sb(<small>V</small>) with 0.05 mol L<small>^–1</small> thiourea in a 0.5 mol L<small>^–1</small> HCl medium and Se(<small>VI</small>) and Te(<small>VI</small>) in a 7 mol L<small>^–1</small> HCl medium. Chemical vapor was generated from an aliquot volume of 5 mL sample in 0.5 mol L<small>^–1</small> HCl for As, Sb, Bi and Hg and 7 mol L<small>⁻¹</small> for Se and Te by the addition of 3.5 and 2 mL of 2.5% (m/v) NaBH<small>₄</small> solution stabilized in 0.1% (m/v) NaOH for Hg, Se, and Te and As, Bi, and Sb, respectively. Three pretreatment methods, namely, (i) addition of 1% (m/v) sulfamic acid; (ii) N<small>₂</small> purging of the solution for 20 min; and (iii) addition of 1% (m/v) sulfamic acid followed by 10 min N<small>₂</small> purging, were investigated for the elimination of nitrite and NO<small>_<em>x</em></small> non-spectral interferences in the Se and Te determination. However, it was observed that pre-washing the reaction cell and the quartz tube atomizer with 6 L min<small>^–1</small> argon for 20 s (As, Bi, Se, Te) and 30 s (Sb), after sample introduction into the reaction cell and before NaBH<small>₄</small> solution addition, was crucial for the elimination of spectral interferences from residual NO<small>_<em>x</em></small> and O<small>₂</small>, regardless of the sample pretreatment method. An increase in pre-washing time resulted in a decrease in the signal for all elements, indicating that the presence of O<small>₂</small> traces is beneficial for high sensitivity. The limits of detection were (mg kg<small>⁻¹</small>) 0.031 (Hg); 0.016 (As); 0.015 (Bi); 0.008 (Sb); 0.084 (Se); and 0.030 (Te). The analysis of certified reference materials indicated recoveries of 98–103% and an expanded uncertainty of ±(17–18)% (<em>k</em> = 2, 95% confidence level). The <em>z</em>′ or <em>z</em> scores indicated a satisfactory performance of the method. The precision, evaluated from extended uncertainty (<em>k</em> = 2, <em>n</em> = 3) by analysis of real samples, was in the range of 4–10.7%.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 942-953"},"PeriodicalIF":3.1,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00468j?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and application of a coal quality intelligent inspection system based on NIRS-XRF technology","authors":"Rui Gao, Jiaxuan Li, Hongzhi Han, Jianchao Song, Jiongyu Huo, Lei Dong, Weiguang Ma, Shuqing Wang, Yan Zhang, Lei Zhang, Peihua Zhang, Zefu Ye, Zhujun Zhu, Yang Zhao, Wangbao Yin and Suotang Jia","doi":"10.1039/D4JA00402G","DOIUrl":"https://doi.org/10.1039/D4JA00402G","url":null,"abstract":"<p >As an important component of industrialization, coking plants require high-quality coking coal. Traditional coal quality analysis methods are cumbersome and inefficient, allowing inferior coal to enter production. In this study, a coal quality intelligent inspection system is developed by combining a fully automatic sampling unit and an analysis control platform, realizing a closed-loop, unmanned process for coal collection, preparation, measurement, and storage, enabling rapid detection of industrial indicators of coal, ensuring every truck's coal quality, distinguishing genuine from fake, and enhancing the ability of coking plants to identify inferior coal. Technologically, we adopt the NIRS-XRF dual-spectral coal quality analysis technique, which combines near-infrared spectroscopy (NIRS) and X-ray fluorescence spectroscopy (XRF). This technique uses NIRS to efficiently and reliably detect organic groups in coal and XRF to accurately and reliably measure inorganic ash-forming components and sulfur elements; consequently, it enables the simultaneous and precise measurement of key indicators such as ash content, volatile matter, and sulfur content in coal. In terms of modeling strategy, we employ a multi-modeling approach to address the complex relationships between different coal quality indicators and spectra, as well as the matrix effects among different coal types. Through analysis and research on different partial least squares regression (PLSR) modeling strategies, we selected the optimal prediction models for each indicator to ensure the accuracy and reliability of the system monitoring results. Specifically, we achieved favorable prediction results for ash content and volatile matter through subtype modeling, while sulfur content attained high accuracy through holistic-segmented modeling, with coefficients of determination (<em>R</em><small>²</small>) of 0.97, 0.94, and 0.97, respectively, root mean square errors of prediction (RMSEPs) of 0.29%, 0.92%, and 0.06%, respectively, average absolute errors (AAEs) of 0.24%, 0.76%, and 0.05%, and average relative errors (AREs) of 2.59%, 3.02%, and 3.38%. In terms of industrial applications, the system operates fully automatically, demonstrating high accuracy and repeatability, meeting the requirements of practical industrial applications. This system provides an efficient and feasible solution for rapid coal quality detection, contributing to the stability and sustainability of coking plant production and promoting the development of the entire coal-based energy industry towards intelligence and efficiency.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1069-1085"},"PeriodicalIF":3.1,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chromatographic purification of stable isotopes of Ni, Cu, and Zn and their isotopic compositions in geological and biological reference materials†","authors":"Chaehwan Park, Kongtae Ra and Hyeryeong Jeong","doi":"10.1039/D4JA00417E","DOIUrl":"https://doi.org/10.1039/D4JA00417E","url":null,"abstract":"<p >Nickel (Ni), copper (Cu), and zinc (Zn) isotopes are used to study biogeochemical and environmental processes. Studies using multiple metallic isotopes are being conducted to advance knowledge of many processes in the Earth system. However, most chromatographic purification methods focus on a single element and studies of multiple metals require different chemical separation protocols. In this study, we developed a new three-step sequential chromatographic protocol that enables isotope studies of Ni, Cu, and Zn in a single sample and is applicable to diverse sample types. Isotope compositions were measured by MC-ICP-MS with different sample introduction systems (wet plasma for Cu and Zn; dry plasma for Ni). Instrumental mass bias was corrected by sample-standard bracketing (SSB) and internal doping with an isotope standard of similar mass. The Ni, Cu, and Zn yields were ∼99% for six geological and two biological reference materials. The δ<small>⁶⁰</small>Ni, δ<small>⁶⁵</small>Cu, and δ<small>⁶⁶</small>Zn values measured in this study were consistent with reported data within the analytical uncertainty. New isotope values in reference materials, including rock, mineral resources, soil, sediments, urban dust, sludge, and living organisms, are reported for Ni (<em>n</em> = 44), Cu (<em>n</em> = 24), and Zn (<em>n</em> = 17). This method can produce high-precision isotope data from various environmental samples, even with limited sample amounts. This work presents an improved method over existing approaches, opening potential applications for metallic stable isotopes in various research fields.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1058-1068"},"PeriodicalIF":3.1,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143761614","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}