Journal of Analytical Atomic Spectrometry最新文献

{"title":"Determination of silicon isotopic composition of zircon reference materials by ns-LA-MC-ICP-MS","authors":"Ze-Pei Yuan, Jin-Cheng Xie, Di-Cheng Zhu, Qing Wang, Liang-Liang Zhang, Li-Juan Xu, Xin-Yu Liang and Xia Qi","doi":"10.1039/D5JA00518C","DOIUrl":"https://doi.org/10.1039/D5JA00518C","url":null,"abstract":"<p >Silicon isotopes serve as powerful geochemical tracers for elucidating crustal recycling processes and plate tectonic dynamics. Although significant progress has been made in <em>in situ</em> Si isotope analysis, the influence of laser parameters on the accuracy and precision of <em>in situ</em> Si isotope measurements, as well as the matrix effects during the analytical process, remains to be systematically investigated and resolved. This study optimized the <em>in situ</em> Si isotope method using nanosecond laser ablation (ns-LA) coupled with multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS). Our results of comprehensive tests indicated that a laser repetition rate of 4–14 Hz, an energy density exceeding 1.5 J cm<small>⁻²</small>, and a spot size of 33–90 µm are ideal conditions to obtain adequate signal intensity for the zircon reference material MTUR1. The external reproducibility of <em>δ</em><small>³⁰</small>Si obtained by long-term single spot and line scan ablation of MTUR1 zircon was 0.26‰ and 0.11‰ (2SD), respectively. Significant matrix effects were consistently observed during non-matrix-matched Si isotope analysis. Although the introduction of water before the ablation cell and <em>Z</em>-axis position adjustment partially suppressed matrix effects, considerable analytical bias remained. We applied this optimized method to examine natural and synthetic zircon reference materials (<em>e.g.</em>, 91 500, Plešovice, SA01, GJ-1, Tanz, Penglai, Ban-1, Qinghu, GHR1, and Jilin). In addition to MUN-zircon, which yielded a <em>δ</em><small>³⁰</small>Si value of −2.10 ± 0.64‰ (2SD), the other zircon reference materials gave relatively homogeneous Si isotopic compositions, with <em>δ</em><small>³⁰</small>Si values ranging from −0.71 ± 0.21‰ to −0.29 ± 0.13‰ (2SD). Our data reveal significant intra- and inter-grain variations in Si isotopic composition within the Qinghu, LKZ-1, Jilin, Temora-2, GHR1, and MUN-zircon zircon reference materials, indicating that Si isotopic data from these materials hold promise for tracing magmatic differentiation.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1449-1460"},"PeriodicalIF":3.1,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686519","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":"40Ar/39Ar dating of olivine hosted melt inclusions","authors":"Jun-Jie Wang, Wan-Feng Zhang, Ming Xiao, Le Zhang, Yan-Qiang Zhang, Peng-Li He and Fang-Fang Huang","doi":"10.1039/D6JA00012F","DOIUrl":"https://doi.org/10.1039/D6JA00012F","url":null,"abstract":"<p >Olivine is generally considered to incorporate extraneous argon and is therefore routinely removed from basalt prior to <small>⁴⁰</small>Ar/<small>³⁹</small>Ar dating. However, the mechanisms by which K-free olivine hosts and retains this argon remain unexplained. In this study, individual olivine grains were analyzed by the laser total-fusion <small>⁴⁰</small>Ar/<small>³⁹</small>Ar dating method to investigate the source of extraneous argon within olivine. The results indicate that &gt;92% of the grains showed no detectable argon signal, demonstrating that the majority of olivine grains are free of extraneous argon. Of the 282 grains analyzed, 21 yielded detectable argon signals, and 11 of these provided viable <small>⁴⁰</small>Ar/<small>³⁹</small>Ar ages ranging from 105.6 ± 32.7 Ma to 162.6 ± 11.5 Ma (2<em>σ</em>). Within this subset, 6 grains exhibited relatively high <small>⁴⁰</small>Ar contents and yielded meaningful <small>⁴⁰</small>Ar/<small>³⁹</small>Ar ages with analytical uncertainties better than 10%, which are consistent within error (160.2 ± 3.2 Ma, 2<em>σ</em>). Major element analysis indicates that potassium (K) in olivine is predominantly hosted within K-rich melt inclusions, and the proportion of olivine grains containing such inclusions is ∼8.6%. This percentage is comparable to the proportion of grains with detectable argon signals (∼7.5%), suggesting that K-rich melt inclusions represent the primary source of extraneous argon in the olivine grains. In addition, the consistent <small>⁴⁰</small>Ar/<small>³⁹</small>Ar ages obtained from these K-rich melt inclusions demonstrate that some melt inclusions in olivine remain as closed systems after capture, and that the extraneous argon they contain is inherited argon with geological significance, rather than excess argon of ambiguous origin.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1225-1231"},"PeriodicalIF":3.1,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686463","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":"Rapid and sensitive analysis of trace elements in medicinal Codonopsis pilosula using laser-induced breakdown spectroscopy assisted by a micro-array copper sieve","authors":"Zenghui Wang, Yufeng Li, Yuqi Chen and Runhua Li","doi":"10.1039/D6JA00031B","DOIUrl":"https://doi.org/10.1039/D6JA00031B","url":null,"abstract":"<p >Medicinal herbs are widely used in the treatment of various diseases owing to their rich composition of bioactive organic compounds as well as essential elements beneficial to human health. In this work, a cost-effective and convenient method termed micro-array copper sieve (MACS) enhanced laser-induced breakdown spectroscopy (LIBS) was proposed to improve the detection sensitivity of elements in powder samples. In order to overcome the problem of diversity of the sample shape, size and density, the original samples of <em>Codonopsis pilosula</em> were pulverized to powder. A MACS was placed on the surface of the powder samples and then they were pressed into cylindrical tablets for spectral analysis. The surface of the <em>Codonopsis pilosula</em> tablet was embedded with a MACS after pressing. Plasma with higher temperature and higher electron density could be generated compared with samples without a MACS. To evaluate the analytical sensitivity improvement factor of this method, iron, chromium, manganese, and aluminum in samples were analyzed, and 2.2–6.5 fold improvements in the analytical sensitivity were achieved. It was demonstrated that the MACS was able to improve the analytical sensitivity of LIBS while analyzing powder samples and could be potentially applied to elemental analysis of herbs.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1336-1345"},"PeriodicalIF":3.1,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686500","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 physical modification and spectrum-image fusion dual-dimensional method for coal analysis using LIBS","authors":"Wei Guo, Xuechen Niu, Feiyu Guan, Qiangwei Hu, Zixuan Li, Yongtai Zhuang and Lianbo Guo","doi":"10.1039/D5JA00397K","DOIUrl":"https://doi.org/10.1039/D5JA00397K","url":null,"abstract":"<p >Elemental analysis of coal is essential for combustion optimization and pollution reduction. Laser-induced breakdown spectroscopy (LIBS) is a rapidly rising coal measurement technique, because of its advantages such as limited sample pretreatment, minimally destructive nature and online capabilities. However, the severe nonlinear response between plasma temperature and image occurs in coal LIBS analysis, which is one of the causes of matrix effects and limited quantitative accuracy. To improve the analysis accuracy, a novel calibration method named plasma temperature correction method of physical modification and spectrum-image dual-dimensional fusion based on LIBS (PTPI-LIBS) was proposed. This method homogenizes the plasma state and ensures a realistic match between the plasma and its image. It further uses plasma image brightness to characterize the temperature and to achieve consistency in correction parameters across different plasmas. As a result, it effectively establishes a reliable response among different plasmas, which eliminates the influence of matrix effects on elemental quantification. To verify the feasibility of PTPI-LIBS, element analysis of coal was carried out. After correction by PTPI-LIBS, the <em>R</em><small>²</small> of the calibration curves for C, N, and H elements all improved to above 0.993, and the average RMSE decreased by 80%. These experimental results demonstrate that PTPI-LIBS can effectively eliminate the influence of matrix effects on coal LIBS elemental detection and improve analysis accuracy. In summary, PTPI-LIBS presents a potential approach for the application of LIBS in the energy industry.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1430-1439"},"PeriodicalIF":3.1,"publicationDate":"2026-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686517","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":"Lamb dip saturated cavity ring-down spectroscopy of gadolinium isotopes in a DC glow discharge","authors":"Ryohei Terabayashi, Yuko Nojiri and Shuichi Hasegawa","doi":"10.1039/D5JA00476D","DOIUrl":"https://doi.org/10.1039/D5JA00476D","url":null,"abstract":"<p >We demonstrate a cavity ring-down spectroscopy (CRDS) system using a direct-current (DC) hollow-cathode glow discharge plasma as an atomic source for isotope-resolved spectroscopy of gadolinium (Gd). This DC glow discharge CRDS provides a compact and simple alternative to conventional inductively coupled plasma (ICP)-based CRDS, while maintaining sufficient stability for high-sensitivity measurements. Saturation effects, more pronounced in atomic than molecular CRDS due to large absorption cross sections, were captured using a saturation model applied to ring-down transients. Saturated CRDS enabled clear observation of Doppler-free lamb dips in Gd spectra, highlighting its capability to resolve narrow spectral features. Combined analysis of Doppler-broadened absorption and lamb dip components allowed estimation of isotopic ratios for the even Gd isotopes, consistent with natural abundances, except for <small>¹⁵⁵</small>Gd and <small>¹⁵⁷</small>Gd. These results demonstrate the feasibility of applying saturated CRDS to precise isotope ratio measurements of rare-earth elements, and suggest the potential applicability of the technique to other metal atoms, including uranium, plutonium, and other transuranic elements.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1375-1385"},"PeriodicalIF":3.1,"publicationDate":"2026-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ja/d5ja00476d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686504","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":"Morphology-dependent plasma behavior analysis in nanoparticle-enhanced laser-induced breakdown spectroscopy based on an intrinsic radiative enhancement framework","authors":"Biming Mo, Junjie Chen, Shuaijun Li, Junjie Ma, Xiaojian Hao, Rui Jia and Pan Pei","doi":"10.1039/D5JA00428D","DOIUrl":"https://doi.org/10.1039/D5JA00428D","url":null,"abstract":"<p >Nanoparticle-enhanced laser-induced breakdown spectroscopy (NELIBS) offers a robust approach for probing strong-field laser–matter interactions and plasmon-assisted energy redistribution at the nanoscale. In this study, Au nanoparticles (AuNPs) with distinct morphologies (nanospheres, nanorods, and nanocages) were deposited on Ti-based substrates to examine morphology-dependent plasma behaviour under nanosecond 1064 nm excitation. Time-resolved emission spectra, combined with Boltzmann-plot temperature diagnostics and Stark-broadening analysis, were employed to evaluate the evolution of electron temperature <em>T</em><small>_e</small> and electron density <em>n</em><small>_e</small>. To eliminate the influence of transition probabilities and temperature-dependent population effects, an intrinsic radiative enhancement model, <em>R</em><small>_s</small>(<em>t</em>), was developed through Boltzmann correction and cross-line geometric averaging, allowing quantitative comparison of radiative efficiencies among different systems. The results indicate that small nanospheres (10 nm) and resonant nanorods substantially increase both <em>T</em><small>_e</small> and <em>n</em><small>_e</small> and sustain prolonged radiative persistence, implying efficient energy confinement. In contrast, larger nanospheres (40 nm) and off-resonant nanorods exhibit weak, rapidly decaying enhancement, whereas nanocages (40 nm) show apparent radiative suppression, possibly related to optical shielding or limited carrier transport. The <em>R</em><small>_s</small>(<em>t</em>) analysis reveals that NELIBS enhancement arises from a morphology-dependent competition between radiative and non-radiative dissipation channels, providing quantitative insight into plasmon–plasma coupling in strongly driven nanostructures.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 5","pages":" 1651-1662"},"PeriodicalIF":3.1,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147872207","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":"Operando laboratory XAS of Ni nanoparticles in CO2 methanation using a plug-flow fixed-bed cell with von Hámos spectrometer","authors":"Sebastian Praetz, Emiliano Dal Molin, Delf Kober, Marko Tesic, Christopher Schlesiger, Peter Kraus, Julian T. Müller, Jyothilakshmi Ravi Aswin, Daniel Grötzsch, Maged F. Bekheet, Albert Gili, Aleksander Gurlo and Birgit Kanngießer","doi":"10.1039/D6JA00027D","DOIUrl":"https://doi.org/10.1039/D6JA00027D","url":null,"abstract":"<p >A plug-flow fixed-bed cell for <em>operando</em> laboratory X-ray absorption spectroscopy (XAS) using a von Hámos spectrometer is presented for heterogeneous catalysis studies. The cell operates up to 1000 °C and 10 bar with controlled gas atmospheres provided by three mass flow controllers and rapid infrared heating. The performance of the setup is demonstrated across a broad usable energy range of the spectrometer, and as a proof of principle, <em>operando</em> Ni K-edge XAS was used to monitor the activation of a 20 wt% NiO/COK-12 catalyst under CO<small>₂</small> methanation conditions (CO<small>₂</small> : H<small>₂</small> = 1 : 4, 350 °C). Time-resolved spectra acquired on a 5 min timescale reveal the reduction of NiO nanoparticles to metallic Ni during activation, directly correlating with increasing catalytic activity quantified by online gas chromatography. This setup enables minute-scale, time-resolved structural analysis of working catalysts under industrially relevant conditions, providing a practical laboratory-based alternative complementary to synchrotron studies.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1208-1211"},"PeriodicalIF":3.1,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ja/d6ja00027d?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686461","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":"Preliminary matrix bias calibrations for ion microprobe oxygen isotope analysis of pyroxene","authors":"Bin Fu","doi":"10.1039/D5JA00491H","DOIUrl":"https://doi.org/10.1039/D5JA00491H","url":null,"abstract":"<p >Similar to garnet or olivine, pyroxene commonly occurs in diverse igneous and metamorphic rocks such as peridotites, eclogites, skarns and meteorites. Its oxygen isotope compositions can be analysed <em>in situ</em> using secondary ion mass spectrometry (SIMS) or an ion microprobe to help constrain the formation of rocks. However, unlike garnet and olivine, calibration of matrix-induced oxygen isotope (<small>¹⁸</small>O/<small>¹⁶</small>O) discrimination in pyroxene is not fully established, limiting its wide application in Earth and planetary sciences. This study provides preliminary matrix bias calibrations using 51 reference materials and/or samples of pyroxene, either low-Ca or high-Ca, including omphacite and jadeite, some (18) of which have also been analysed here by laser fluorination isotope ratio mass spectrometry. Both conventional offline (bias <em>δ</em><small>¹⁸</small>O <em>vs.</em> mole fractions of ferrosilite or jadeite endmembers: <em>X</em><small>_Fs</small> or <em>X</em><small>_Jd</small>) and online (bias <em>δ</em><small>¹⁸</small>O <em>vs.</em><small>⁵⁶</small>Fe<small>¹⁶</small>O/<small>¹⁶</small>O) calibration methods can be applicable, including the first matrix bias estimation for jadeitic clinopyroxene or omphacite as well as Mn-rich pyroxene. Investigation is needed for intermediate-Ca, particularly Ti-rich pyroxene.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1468-1479"},"PeriodicalIF":3.1,"publicationDate":"2026-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686521","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":"Separation and characterization of gold nanomaterials with different shapes using AF4-ICP-MS and single-particle ICP-MS","authors":"Yu-ki Tanaka, Sana Hasegawa and Yasumitsu Ogra","doi":"10.1039/D5JA00468C","DOIUrl":"https://doi.org/10.1039/D5JA00468C","url":null,"abstract":"<p >The toxicity profiles of nanomaterials (NMs) are affected by their chemical composition, size, and shape. Inductively coupled plasma mass spectrometry (ICP-MS) is a robust, element-specific analytical tool for detecting the chemical composition of NMs. Fast time-resolved analysis by single-particle ICP-MS (spICP-MS) enables the discrimination of individual nanoparticles and the determination of their sizes based on elemental content. However, because spICP-MS evaluates particle sizes on the basis of their elemental mass, it cannot distinguish differently shaped NMs with identical volume. In this study, we used asymmetric flow field-flow fractionation coupled with ICP-MS (AF4-ICP-MS) to separate gold NMs of different shapes. Although clear separation was not achieved with AF4-ICP-MS, the signal intensities of NMs with similar volumes but different shapes varied significantly in spICP-MS analysis; namely, nanorods and nanoplates exhibited lower signal intensities than nanospheres with similar volumes. These results suggest that the ionization efficiency of NMs in the ICP is influenced by particle shape, with incomplete ionization preferentially occurring in nanorods and nanoplates. Our findings demonstrate the potential of spICP-MS for shape-dependent separation and characterization of NMs.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1316-1323"},"PeriodicalIF":3.1,"publicationDate":"2026-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ja/d5ja00468c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686476","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":"U–Pb ID-TIMS dating of U-rich accessory minerals using a Phoenix-ATONA and 202Pb–205Pb–233U–236U tracer","authors":"Yu-Ting Zhong, Yuri Amelin and Yi-Gang Xu","doi":"10.1039/D6JA00003G","DOIUrl":"https://doi.org/10.1039/D6JA00003G","url":null,"abstract":"<p >Using zircon reference material TEMORA 2 and synthetic EARTHTIME age solutions (ET100, ET500 and ET2000) analysed at the new geochronology laboratory at the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences (GIGCAS), using a <small>²⁰²</small>Pb–<small>²⁰⁵</small>Pb–<small>²³³</small>U–<small>²³⁶</small>U spike, we evaluate analytical precision and inter-laboratory reproducibility of <small>²⁰⁶</small>Pb/<small>²³⁸</small>U dates as precision approaches the 0.01% level. Single analyses of samples containing ∼30–150 pg of radiogenic Pb routinely achieve a <small>²⁰⁶</small>Pb/<small>²³⁸</small>U date precision of 0.02–0.05%, comparable to results from leading U–Pb geochronology labs in the EARTHTIME consortium. In contrast, comparisons between the absolute values of <small>²⁰⁶</small>Pb/<small>²³⁸</small>U dates of reference materials determined at GIGCAS and those reported by EARTHTIME labs reveal significant inconsistencies, up to <em>ca.</em> 0.14%, which vary among reference materials. These inconsistencies are most plausibly attributed to long-term drift in solution U/Pb ratios caused by differential adsorption of Pb and/or U on storage container walls. We discuss the possible ways of overcoming this problem and the prospect of improving spike calibration, which are the necessary steps towards precision and accuracy of <small>²⁰⁶</small>Pb/<small>²³⁸</small>U dates at the 0.01% level.</p>","PeriodicalId":81,"journal":{"name":"Journal of Analytical Atomic Spectrometry","volume":" 4","pages":" 1346-1353"},"PeriodicalIF":3.1,"publicationDate":"2026-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147686501","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}