Journal of Analytical Atomic Spectrometry最新文献

{"title":"Atomic spectrometry update – a review of advances in environmental analysis","authors":"Warren R. L. Cairns, Owen T. Butler, Olga Cavoura, Christine M. Davidson, José-Luis Todolí-Torró and Marcus von der Au","doi":"10.1039/D4JA90056A","DOIUrl":"https://doi.org/10.1039/D4JA90056A","url":null,"abstract":"<p >Highlights in the field of air analysis included: a new focus on measuring micro- and nanoplastic particles in air, the development of hyphenated ICP-MS systems for <em>in situ</em> sampling and measurement of airborne metallic particles and the reported use of wearable black carbon sensors for measuring exposure to diesel fumes within the workplace. Significant advancements in the analysis of waters have been made in developing novel resin materials and new protocols for existing commercially available resins, aimed at the determination and speciation of trace levels of metals and metalloids in water matrices. These developments have been validated for sample purification and pre-concentration. In addition to traditional column chemistry, on-line hyphenated techniques were employed to enhance speciation analysis, with optimized methods enabling faster analysis and facilitating a more holistic approach by allowing the simultaneous detection of multiple species or elements in a single run. Efforts have also been directed towards detecting particles in the micro- and nanometer range, broadening the analytical scope beyond the ionic fraction. This year, the focus shifted from natural and engineered nanoparticles towards the critical field of plastic pollution, with several innovative methodologies introduced. Furthermore, to achieve better precision and lower detection limits in the field of MS/MS, numerous studies explored the behaviour of gases and reactions within reaction cells, contributing to the refinement of these techniques. In the analysis of soils and plants, methods aimed at improving the efficiency of green solvents were again prominent. Developments in AES were largely driven by the desire to create small, low-cost, low-power-consumption instrumentation suitable for field deployment. The study of NPs in soil and plant systems continued to be a focus for sp-ICP-MS. The past year has again seen a large volume of publications featuring LIBS, with particular interest in methods to enhance signal intensity and thereby improve limits of detection. Of interest in XRF was the development of in-house spectrometers for underwater mercury screening and <em>in vivo</em> plant analysis. Developments in geological analysis include new homogeneous natural and synthetic materials that have been developed as reference materials (RMs) in the analysis of geological samples by microanalytical techniques, such as LA-ICP-MS, LIBS and SIMS. Additional information on already existing RMs has been obtained for <em>in situ</em> isotope ratio determinations. Attention has been paid to sample preparation and purification methods able to shorten the analysis time and to improve the accuracy. Much attention has been paid to the use of LA-ICP-MS/MS as a means for removing spectral interferences in the case of <em>in situ</em> localized isotopic analysis and dating of geological materials. The development of new chemometric models as well as software has continue","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 11-69"},"PeriodicalIF":3.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912688","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":"High-precision coal classification using laser-induced breakdown spectroscopy (LIBS) coupled with the CST-PCA-based ISSA-KELM","authors":"Shuaijun Li, Xiaojian Hao, Biming Mo, Junjie Chen, Hongkai Wei, Junjie Ma, Xiaodong Liang and Heng Zhang","doi":"10.1039/D4JA00249K","DOIUrl":"https://doi.org/10.1039/D4JA00249K","url":null,"abstract":"<p >As one of the main energy sources in human production and life, the accurate and rapid classification of coal is of great significance to industrial production and the control of pollution emissions. However, the complex composition and highly similar elemental composition of coal with different physical properties and chemical composition lead to a high degree of similarity in coal spectral data measured by laser-induced breakdown spectroscopy (LIBS), which poses a great challenge to accurate classification and identification work. In this paper, based on LIBS technology, we integrate the chi-square test (CST) and principal component analysis (PCA) to construct a quadratic dimensionality reduction network (CST-PCA), and for the first time, we propose a new improved sparrow search algorithm (ISSA) by introducing spatial pyramid matching (SPM) chaotic mapping, adaptive inertia weights (<em>w</em>) and Gaussian mutation, and combine it with kernel based extreme learning machine (KELM) to construct an ISSA-KELM data classification model to classify and identify seven types of coal samples. Firstly, 2520 12248-dimensional coal spectral data were preprocessed using a combination of the chi-square test (CST) and principal component analysis (PCA). The KELM was hyper-parameter optimised using ISSA. By comparing with the unoptimized model, the accuracy of coal classification reaches 99.773%. The experimental results show that the CST-PCA-based ISSA-KELM algorithm effectively optimizes the parameters, improves the classification accuracy of coal, and provides a new data processing scheme for accurate qualitative analysis of coal.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 286-296"},"PeriodicalIF":3.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912622","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":"Ultra-trace elemental determination of Si by means of graphite furnace-atomic absorption spectrometry†","authors":"Annika Schulze, Maximilian von Bremen-Kühne, Philipp Albert, Christoph Krösche and Cornel Venzago","doi":"10.1039/D4JA00360H","DOIUrl":"https://doi.org/10.1039/D4JA00360H","url":null,"abstract":"<p >The significance of Si determination has increased with the rise of production of silanes, siloxanes and silicones. The determination of Si plays an important role to determine the presence of such compounds in solution and provide quantitative data. For most methods, lower limits of detection of Si so far have been in the mg L<small>⁻¹</small> to μg L<small>⁻¹</small> range. However, to comply with the maximum levels for Si absorption through food and dietary supplements, trace determination of Si in the very low μg L<small>⁻¹</small> to high ng L<small>⁻¹</small> range is required. In this study, a method for determining ultra-trace amounts of Si in food simulants, ethanol, and acetic acid, was developed using GF-AAS. The method was validated according to the guidelines set by the FDA, and the results showed Si quantification limits of 0.2 μg L<small>⁻¹</small> and 0.4 μg L<small>⁻¹</small> for ethanol and acetic acid, respectively.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 110-113"},"PeriodicalIF":3.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912686","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":"A new calcite reference material for in situ oxygen isotope analysis using secondary ion mass spectrometry: development and application constraints†","authors":"Xuna Yin, Miaohong He, Le Zhang, Wenfeng Deng, Yangrui Guo, Zexian Cui, Qing Yang, Yanqiang Zhang and Gangjian Wei","doi":"10.1039/D4JA00345D","DOIUrl":"https://doi.org/10.1039/D4JA00345D","url":null,"abstract":"<p >The oxygen isotopic microanalysis of calcite is essential for obtaining high spatial resolution data linked to microstructures, a challenge for conventional techniques. This analysis, however, relies heavily on matrix-matched reference materials, of which only a few calcite standards are available. In this study, an inorganically precipitated calcite vein sample (WS-1) was evaluated through 225 SIMS oxygen isotope analyses and was found to have a homogeneous isotopic composition, with an external reproducibility ≤0.21‰ (1<em>σ</em>), suggesting its potential as a SIMS reference material. The precise <em>δ</em><small>¹⁸</small>O<small>_VPDB</small> value, determined <em>via</em> traditional gas-source IRMS, was −16.52 ± 0.13‰ (1SD). Matrix effects were assessed using various carbonates, including abiotic aragonite (VS001/1-A), three abiotic calcites (NBS18, Cal-1, WS-1), and a high-Mg calcite (gorgonian coral). The results revealed negligible matrix effects between abiotic aragonite and calcites but significant differences between calcites and high-Mg calcite, likely due to Mg content or differences in biogenic crystal morphology and trace organic composition. This study demonstrates the utility of <em>in situ</em> oxygen isotopic microanalysis for calcite but emphasizes the need for caution when analyzing high-Mg calcitic skeletons.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 104-109"},"PeriodicalIF":3.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912685","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":"Quantitative sizing of microplastics up to 20 µm using ICP-TOFMS†","authors":"Fazzolari Sandro, Hattendorf Bodo and Günther Detlef","doi":"10.1039/D4JA00323C","DOIUrl":"10.1039/D4JA00323C","url":null,"abstract":"<p >A fundamental study of four different sample introduction systems was carried out to evaluate the upper size limit of microplastics measured by inductively coupled plasma-time-of-flight-mass spectrometry (ICP-TOFMS). Three different, certified microplastic samples (PS, PMMA and PVC) within a size range of 3–20 µm in suspension were measured. In this study, no particles larger than 10 µm could be detected using pneumatic nebulization for sample introduction. However, we were able to extend the upper size limit to 20 µm by either using a falling-tube device or a vertical downwards-pointing ICP-TOFMS. Particle transport efficiencies could only be estimated and were within a range of 13% to 184%. The particle size was quantified by using dissolved citric acid (non-matrix matched) and agreed with reference values. The critical size values were 2.3 µm for PS, 2.4 µm for PMMA and 3.0 µm for PVC. Additionally, in the case of PVC, chlorine could also be detected and the critical size value was 3.9 µm based on the <small>³⁵</small>Cl<small>⁺</small> ion signal.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 276-285"},"PeriodicalIF":3.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11626425/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811409","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":"Influence of the distance between the focused point and Al surface on atomic and molecular emission spectra in air","authors":"Huihui Zhu, Bowen Fan, Yubo Zhang, Zhuo Wu, Fuli Chen, Xiaohui Su and Tao Lü","doi":"10.1039/D4JA00209A","DOIUrl":"https://doi.org/10.1039/D4JA00209A","url":null,"abstract":"<p >The focused position of the lens relative to the sample surface affects the density, temperature, and dynamic characteristics of laser-induced plasma, which are important for improving the spectral intensity, minimizing self-absorption, and improving stability of laser-induced breakdown spectroscopy (LIBS). The emission intensities of the Al atomic line and the AlO B<small>²</small>Σ<small>⁺</small>–X<small>²</small>Σ<small>⁺</small>(0,0) band, using nanosecond pulse laser ablation of an aluminum target in air, at three different focused point-to-sample distances were investigated. The Al atomic line was optimal when the focus was 1 cm above the sample surface, which is attributed to the low density and high temperature of the plasma. Conversely, the AlO B<small>²</small>Σ<small>⁺</small>–X<small>²</small>Σ<small>⁺</small>(0,0) band emission spectrum is superior when the focused point is 1 cm below the Al surface, with the spectral intensity enhancing as the number of laser shots increases. A time-resolved pump–probe shadowgraph technique was employed to record dynamic snapshots of the ablation plume at different focused point-to-sample distances to account for the enhancement mechanism of the spectral intensity. The intensity variations in the atomic and molecular spectra are related to the shock wave propagation velocity in the longitudinal and radial directions, providing insights into the enhancement mechanism of the spectral signals. Moreover, the morphology of craters was analyzed by using a scanning electron microscope and a profilometer, revealing that the depth-to-diameter ratio and ablation amount correlated with different spectral intensity variations at focused point-to-sample distances of −1 and 0 cm. These results will assist in choosing optimal strategies for quantifying elements using LIBS atomic or molecular spectrometry.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 306-314"},"PeriodicalIF":3.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912624","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":"Quantitative elemental analysis of human leukemia K562 single cells by inductively coupled plasma mass spectrometry in combination with a microdroplet generator†","authors":"Yu-ki Tanaka, Hinano Katayama, Risako Iida and Yasumitsu Ogra","doi":"10.1039/D4JA00364K","DOIUrl":"https://doi.org/10.1039/D4JA00364K","url":null,"abstract":"<p >Single-cell inductively coupled plasma mass spectrometry (scICP-MS) is an emerging technique for the determination of elemental contents in individual cells. No standardized system for the introduction of cultured mammalian cells has been established owing to difficulties in cell transport and detection. The transport efficiency of human chronic myelogenous leukemia K562 cells (hereinafter “K562 cells”) in a conventional sample introduction system comprising a pneumatic nebulizer and a total consumption spray chamber is low owing to cell damage. To improve cell transport efficiency, we installed a piezo-actuator-driven microdroplet generator (μDG) into the sample introduction system of an ICP-MS for fast time-resolved analysis. Cell transport efficiency was drastically improved by using a μDG. For the determination of elemental contents, calibration curves were created by analyzing microdroplets of ionic standard solutions generated by the μDG. The pulsed signals originating from the microdroplets were analyzed and the sensitivity (<em>i.e.</em>, signal intensity per elemental mass) was calculated for each element. The quantification protocol was validated using silver nanoparticles, titanium dioxide nanoparticles, and dried yeast cells. Finally, we introduced intact K562 cells and detected signals with high throughput. The average masses of five essential elements in single K562 cells were precisely determined as follows: 270 ± 100 fg for Mg, 23.0 ± 2.0 fg for Zn, 7684 ± 675 fg for P, 2136 ± 165 fg for S, and 14.4 ± 1.2 fg for Fe. These values are consistent with the values obtained by solution nebulization ICP-MS analysis after the acid digestion of K562 cells.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 216-225"},"PeriodicalIF":3.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ja/d4ja00364k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912594","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":"Vacuum degree detection performance improvement of vacuum switches based on NELIBS","authors":"Jiaqi Liu, Xiaokang Ding, Feilong Zhang, Huan Yuan, Xiaohua Wang, Aijun Yang, Jifeng Chu and Mingzhe Rong","doi":"10.1039/D4JA00219A","DOIUrl":"https://doi.org/10.1039/D4JA00219A","url":null,"abstract":"<p >The measurement of vacuum degree and electrification in vacuum switches has been a critical issue constraining the development of vacuum switches for over half a century, remaining unresolved. In recent years, our team has proposed the use of laser-induced breakdown spectroscopy (LIBS) for the non-contact measurement of vacuum switch pressure. However, its application is hindered by relatively high detection limits, low sensitivity, and susceptibility to background noise interference, which result in suboptimal precision. Extensive research has indicated that metal nanoparticles can effectively enhance signal detection capabilities, however, their enhancement effects under low-pressure conditions remain unclear. This study aimed to investigate the enhancement effects of silver nanoparticles (AgNPs) on signals under low-pressure conditions. By analyzing spectral data, plasma images, and radiation integral intensity, we seek to improve the accuracy of vacuum level measurements in vacuum switches. Results showed that in low-pressure environments, AgNPs enhanced spectral signals by up to 7.17-fold, increasing vacuum detection accuracy from 95.7% to 98.05% and extending the detection range by an order of magnitude to 10<small>⁻³</small> Pa. This enhancement was regulated by particle size and concentration, with 10 nm AgNPs exhibiting better enhancement effects than 5 nm particles. The optimal concentration varied with both particle size and pressure. Nanoparticle-enhanced LIBS (NELIBS) increased the drop in plasma radiation integral intensity, prolonging the pre-expansion state of the plasma when excited and improving the accuracy of vacuum level measurements. This explores the potential of applying nanomaterials to conduct electrical detection in vacuum conditions and lays a theoretical and experimental foundation for optimizing spectroscopic analysis technologies.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 248-258"},"PeriodicalIF":3.1,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912597","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":"An accurate quantitative method for NdFeB magnetism based on laser-induced breakdown spectroscopy","authors":"Guanyu Chen, Jing Chen, Dongming Qu, Guang Yang and Huihui Sun","doi":"10.1039/D4JA00342J","DOIUrl":"https://doi.org/10.1039/D4JA00342J","url":null,"abstract":"<p >NdFeB magnetic materials are widely used in daily life, such as in permanent magnet motors, loudspeakers and computer disks. The NdFeB magnetic material has excellent magnetic properties, and its magnetic properties are also the key to judge the production quality of NdFeB. Therefore, the precise quantification of the magnetic properties of NdFeB magnetic materials is crucial. Laser induced breakdown spectroscopy (LIBS) is a technique to obtain the spectrum of chemical elements by excitation of plasma on the surface of a sample with a high energy laser. In this paper, a precise classification and magnetic quantification method for NdFeB magnetic materials based on laser-induced breakdown spectroscopy is designed, which is different from the traditional direct magnetic property detection method and uses element detection to quantitatively analyze the magnetic properties indirectly. A laser-induced breakdown spectroscopy system was used to collect the characteristic spectrum of NdFeB magnetic materials, and the sliding window minimum removal base method was independently designed to further optimize the detection accuracy. A classification model and quantitative analysis method model were further established and optimized. The random forest method was used to preliminarily classify NdFeB magnetic materials, and the GA-ELM method was used to conduct quantitative analysis of magnetic properties. Quantitative magnetic properties include Br, Hcj, Hcb and (BH)max. The error analysis of the final quantitative analysis is as follows: RMSE of Br reaches 0.0001526, RMSE of Hcj reaches 0.0001937, RMSE of Hcb reaches 0.00197, and RMSE of (BH)max reaches 0.00785. It is verified that the magnetic quantification method for NdFeB magnetic materials based on laser-induced breakdown spectroscopy can effectively conduct accurate quantitative analysis of the magnetic properties of NdFeB magnetic materials and provide a fast, convenient, accurate and economical detection method for the quality control of magnetic materials workshops.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 297-305"},"PeriodicalIF":3.1,"publicationDate":"2024-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912623","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":"In situ copper isotope analysis by femtosecond laser ablation multicollector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS) on historical gold coins†","authors":"Louise de Palaminy, Franck Poitrasson, Christophe Pécheyran, Gaëlle Barbotin, Pascale Louvat, Sylvain Bérail, Anne-Laure Ronzani, Luc Robbiola and Sandrine Baron","doi":"10.1039/D4JA00217B","DOIUrl":"https://doi.org/10.1039/D4JA00217B","url":null,"abstract":"<p >This study investigates the potential of femtosecond laser ablation coupled with multicollector inductively coupled plasma mass spectrometry (fs-LA-MC-ICP-MS) for copper isotopic analysis in gold matrices applied to cultural heritage. Elemental analyses, which have commonly been used so far, provide information on the circulation of metal stocks based on elemental signatures but fail to pinpoint the precise source of gold. In contrast, isotopic analyses can offer a more accurate means of identifying the source of the metal, yet their application to gold matrices remains a challenge. For the first time, we successfully determined copper isotope ratio in gold matrices and achieved repeatabilities of 0.12‰ to 0.26‰ (2SD) for <em>δ</em><small>⁶⁵</small>Cu analyses carried out over up to 8 days, demonstrating the feasibility of copper isotopic analyses in gold coins at the micron-scale. This work was conducted using isotopically characterised in-house matrix-matched gold standard with copper concentrations varying from 4.5 wt% to 9.6 wt%. Our results open new avenues of research for provenance studies of precious museum artefacts and archaeological finds, with potential applications in authentication analyses on similar gold materials. The micro-sampling performed by femtosecond laser ablation minimises the damages on such ancient artifacts. However, the Cu concentrations had to be of at least 4 wt% with our analytical set up and a special care must be taken on the laser beam focusing in order to obtain accurate <em>δ</em><small>⁶⁵</small>Cu measurements in gold matrices.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 1","pages":" 226-237"},"PeriodicalIF":3.1,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912595","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}