Spectrochimica Acta Part B: Atomic Spectroscopy最新文献

Radiative recombination as a transient spectroscopic fingerprint for sample oxidation using laser-induced XUV spectroscopy (LIXS)

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-04-03 DOI: 10.1016/j.sab.2025.107203

Sharath Rameshbabu , Davide Bleiner

引用次数: 0

Long-pulsed laser-induced breakdown spectroscopy for elemental imaging: An evaluation with human teeth

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-04-01 DOI: 10.1016/j.sab.2025.107201

Shoujie Li , Fei Teng , Lihui Ren , Qun Yan , Wangquan Ye , Ye Tian , Ying Li , Jinjia Guo , Yoshihiro Deguchi , Ronger Zheng , Xin Zhang , Yuan Lu

{"title":"Long-pulsed laser-induced breakdown spectroscopy for elemental imaging: An evaluation with human teeth","authors":"Shoujie Li , Fei Teng , Lihui Ren , Qun Yan , Wangquan Ye , Ye Tian , Ying Li , Jinjia Guo , Yoshihiro Deguchi , Ronger Zheng , Xin Zhang , Yuan Lu","doi":"10.1016/j.sab.2025.107201","DOIUrl":"10.1016/j.sab.2025.107201","url":null,"abstract":"<div><div>Laser-induced breakdown spectroscopy (LIBS) is a practical technique for chemical imaging by analyzing elemental emissions. The utilization of long-pulsed lasers has been proven to enhance LIBS detection in water and air. However, the application of long-pulsed LIBS in imaging remains unexplored. In this study, we employed a laser with a pulse width of 100 ns for LIBS imaging to obtain elemental distribution using a human tooth as sample for performance evaluation. It is demonstrated that the tooth layer can be effectively resolved with distinct boundaries under the long-pulsed LIBS. When compared with a 10-ns pulsed laser, the LIBS emissions were generally enhanced under the long-pulse laser, resulting in improved chemical imaging capabilities. This enhancement might be attributed to higher mass consumption achieved through prolonged excitation. After examining plasma properties, it was found that the long-pulsed LIBS exhibited higher sensitivity towards changes in tooth layers. Furthermore, the molecular emission was significantly amplified under long-pulsed LIBS. The compositional distribution is also trackable using these molecular emissions, and more information could be extracted by referencing the correlation between element and molecules. Therefore, utilizing a long pulse laser can serve as an effective approach to enhance chemical imaging in LIBS analysis while providing alternative options such as molecular mapping.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107201"},"PeriodicalIF":3.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768928","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}

引用次数: 0

Energy-dispersive X-ray fluorescence analysis of uranium-contaminated stainless-steel surfaces by eliminating the iron sum peak using a titanium filter

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-04-01 DOI: 10.1016/j.sab.2025.107200

Ukyou Yanagisawa , Hui Wang , Tsugufumi Matsuyama , Yasuhiro Sakai , Hiroshi Yoshii

{"title":"Energy-dispersive X-ray fluorescence analysis of uranium-contaminated stainless-steel surfaces by eliminating the iron sum peak using a titanium filter","authors":"Ukyou Yanagisawa , Hui Wang , Tsugufumi Matsuyama , Yasuhiro Sakai , Hiroshi Yoshii","doi":"10.1016/j.sab.2025.107200","DOIUrl":"10.1016/j.sab.2025.107200","url":null,"abstract":"<div><div>During energy-dispersive X-ray fluorescence (EDXRF) measurements of stainless steel, sum peaks originating from iron are frequently observed. Among these, the Fe Kα + Kβ sum peak overlaps with the U Lα peak, complicating the analysis of uranium contamination on stainless-steel surfaces. While secondary X-ray filters can mitigate such sum peaks, integrating them into commercially available portable EDXRF analyzers poses technical challenges. This study presents a straightforward method for eliminating iron sum peak interference. A titanium foil, placed over the uranium-contaminated area on a stainless-steel surface, attenuates incident X-rays while allowing significantly higher transmission of U Lα X-rays than Fe K X-rays. EDXRF measurements were conducted on uranium-contaminated stainless-steel models using a portable EDXRF spectrometer equipped with a titanium foil of optimized thickness as a filter. In the resulting EDXRF spectrum, the intensity of the U Lα peak showed a direct correlation with the uranium content, enabling accurate detection of uranium levels as low as 61 ng. The proposed method achieves a uranium detection sensitivity approximately 100 times greater than conventional α-survey meter methods.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107200"},"PeriodicalIF":3.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143785917","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}

引用次数: 0

Accurate determination of uranium isotope abundances by wavelength modulation spectroscopy in atomic beams

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-04-01 DOI: 10.1016/j.sab.2025.107202

Wei Wei, Alonso Castro

{"title":"Accurate determination of uranium isotope abundances by wavelength modulation spectroscopy in atomic beams","authors":"Wei Wei, Alonso Castro","doi":"10.1016/j.sab.2025.107202","DOIUrl":"10.1016/j.sab.2025.107202","url":null,"abstract":"<div><div>The design and demonstration of an optical analysis system based on wavelength modulation spectroscopy in an atomic beam for uranium isotope abundance determinations is presented. This system probes the uranium 5f<sup>3</sup>6d7s<sup>2</sup> (<sup>5</sup>L<sub>6</sub>) → 5f<sup>2</sup>6d<sup>2</sup>7s<sup>2</sup> (<sup>5</sup>K<sub>5</sub>) transition at 861.031 nm, which is considered to be the most suitable transition for uranium isotopic analysis. A new laser characterization strategy was developed for the conditions where optimum laser wavelength modulation depth was small compared to the free spectral range (FSR) of etalons. Two capabilities enabled the higher-precision determination of isotope abundances of atomic beams: (1) reduction of low-frequency additive noise, especially the noise caused by black-body radiation and (2) suppression of non-absorption transmission losses. The performance of this system was validated with uranium samples of various isotopic compositions. By comparing the measurements using natural uranium samples between the direct absorption and the wavelength modulation approaches, a 21-fold decrease in uncertainty of the integrated absorbance and a 6.8-fold improvement in the 1-σ precision of the number density were achieved. In addition, by comparing the results using uranium oxide samples, a 6.1-fold decrease in the uncertainty of inferred isotope abundance was obtained. These results demonstrate that the 1f-normalized 2f wavelength modulation spectroscopy (WMS-2f/1f) technique enables higher-precision analysis of atomic beams.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107202"},"PeriodicalIF":3.2,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143783915","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}

引用次数: 0

Analysis of impurities in NaPF6 for sodium-ion batteries by inductively coupled plasma tandem mass spectrometry

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-29 DOI: 10.1016/j.sab.2025.107199

Ping Li , Shuiai Luo , Liang Fu , Dan Sun , Song Lan , Shuchun Li

{"title":"Analysis of impurities in NaPF6 for sodium-ion batteries by inductively coupled plasma tandem mass spectrometry","authors":"Ping Li , Shuiai Luo , Liang Fu , Dan Sun , Song Lan , Shuchun Li","doi":"10.1016/j.sab.2025.107199","DOIUrl":"10.1016/j.sab.2025.107199","url":null,"abstract":"<div><div>To detect metal impurities in the electrolyte of sodium-ion batteries (sodium hexafluorophosphate, NaPF<sub>6</sub>) and ensure the performance stability and safety of sodium-ion batteries, a new strategy for identifying detrimental metal impurities is proposed. In this work, inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) was used to study 12 metal impurities in NaPF<sub>6</sub>. The NaPF<sub>6</sub> sample was dissolved in ultra-pure water and directly analyzed by ICP-MS/MS, and the spectral interference was eliminated by the reaction gas mixture N<sub>2</sub>O/H<sub>2</sub> in the MS/MS mode. The analysis results were compared with the results from sector field (SF)-ICP-MS, and the accuracy and reliability of the developed method were evaluated by a spike recovery test. Under optimized conditions, the limit of detection (LOD) of analytes was in the range of 0.16–3.2 ng L<sup>−1</sup>, the spiked recovery was in the range of 94.4 %–105 %, and the relative standard deviation (RSD) was 1.3 %–4.1 %. Statistical analysis showed that, at the confidence level of 95 %, there was no significant difference between the analysis results from the developed method and SF-ICP-MS. The developed method is accurate and reliable, with good stability and high accuracy. The ICP-MS/MS method based on the N<sub>2</sub>O/H<sub>2</sub> reaction mode shows strong potential for analyzing various metal impurities in NaPF<sub>6</sub>, and can be extended to other fields with great reference value.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107199"},"PeriodicalIF":3.2,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747481","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}

引用次数: 0

Online analysis of coal particle flow by laser-induced breakdown spectroscopy based on pelletized coal calibration samples and feature-based transfer learning

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-27 DOI: 10.1016/j.sab.2025.107198

Meirong Dong , Zhichun Li , Junbin Cai , Weiye Lu , Xiaoxuan Chen , Kaijie Bai , Shunchun Yao , Jidong Lu

{"title":"Online analysis of coal particle flow by laser-induced breakdown spectroscopy based on pelletized coal calibration samples and feature-based transfer learning","authors":"Meirong Dong , Zhichun Li , Junbin Cai , Weiye Lu , Xiaoxuan Chen , Kaijie Bai , Shunchun Yao , Jidong Lu","doi":"10.1016/j.sab.2025.107198","DOIUrl":"10.1016/j.sab.2025.107198","url":null,"abstract":"<div><div>The application of laser-induced breakdown spectroscopy (LIBS) for directly measuring coal particle flow is an optimal choice for the actual industrial operations. With the objective of facilitating the detection of particle flow, we established a LIBS detection system coupled with the coal particle circulation bench, which can continuously and automatically provide particle flow samples for laser ablation. A quantitative analysis method for particle flow combining feature-based transfer learning was proposed, so a dual-mode optical LIBS module was designed and integrated into this system to obtain the spectral signals from different forms of coal samples (pellet and particle flow) through the same optical configuration. The spectral characteristics and the correlation between pellet and particle flow were firstly analyzed. Then a spectral correction method based on polynomial fitting was proposed to enhance the correlation between the pellet spectra and particle flow spectra. Finally, the feature space mapping method was introduced for improving the effect of feature transfer, and the model was trained on highly stable pellet spectra to perform a direct quantitative analysis of coal particle flow. The results demonstrated that the root mean square error (RMSE) for the analysis of calorific value, volatile matter, and ash content of particle flow was 0.757 MJ/kg, 2.630 %, and 3.034 %, respectively. This work provides a practical application scheme for on-line analysis of coal particle flow.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107198"},"PeriodicalIF":3.2,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768927","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}

引用次数: 0

Deuterium release from beryllium layers by laser induced plasma ablation and laser induced desorption coupled with quadrupole mass spectrometry

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-25 DOI: 10.1016/j.sab.2025.107197

Sasa-Alexandra Yehia-Alexe , Mihai Serbanescu , Paul Dinca , Bogdan Butoi , Maria Elena Zarif , Corneliu Porosnicu , Andreea Groza

{"title":"Deuterium release from beryllium layers by laser induced plasma ablation and laser induced desorption coupled with quadrupole mass spectrometry","authors":"Sasa-Alexandra Yehia-Alexe , Mihai Serbanescu , Paul Dinca , Bogdan Butoi , Maria Elena Zarif , Corneliu Porosnicu , Andreea Groza","doi":"10.1016/j.sab.2025.107197","DOIUrl":"10.1016/j.sab.2025.107197","url":null,"abstract":"<div><div>By laser induced plasma ablation and laser induced desorption methods was studied the release of deuterium atoms contained in 1 μm beryllium layers produced by thermionic vacuum arc technology combined with a plasma torch. For such purpose was used a 1053 nm nanosecond laser source with pulse duration of 10 ns, tuned in pulse energy and repetition rate, for reaching both laser induced plasma ablation and laser induced desorption regimes. The signals of the species released from the beryllium‑deuterium layers after the laser irradiation were recorded simultaneous using a high-resolution optical spectrometer and a quadrupole mass spectrometer. In the laser ablation plasma plume, optical emission bands characteristic to BeO, BeH/BeD, H<sub>2</sub>/D<sub>2</sub>, and SiO species were identified. Mass spectra analysis revealed the dependence of released deuterium atoms on laser operating parameters.</div><div>The amounts of deuterium atoms detected by quadrupole mass spectrometry at different laser pulse energies and repetition rates, were compared with the total amount of deuterium (4 × 10<sup>17</sup> D/m<sup>2</sup>) measured by Thermal Desorption Spectroscopy. The results indicated that 100 % deuterium atoms were released in the laser induced plasma ablation regime, in one second, at 1 kHz laser repetition rate, after samples exposure to 1000 laser pulses. In laser induced desorption regime, at 10 Hz laser repetition rate, the exposure to 10 laser pulses in one second, lead to 10 % deuterium atoms release, the percentage decreasing to 1 % when Be/D layers are irradiated with 3 laser pulses. A discussion on the heating effects of the laser beam, as function of its operating parameters, on the layer surface morphologies is also presented.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107197"},"PeriodicalIF":3.2,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716275","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}

引用次数: 0

Post-arc electron density measurement in SF6 and SF6/CO2 mixture arcs using Thomson scattering

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-24 DOI: 10.1016/j.sab.2025.107196

Tianxiao Liu, Hao Sun, Yushi Zhang, Jianqiao Xiao, Yang Lu, Chunping Niu, Yi Wu

{"title":"Post-arc electron density measurement in SF6 and SF6/CO2 mixture arcs using Thomson scattering","authors":"Tianxiao Liu, Hao Sun, Yushi Zhang, Jianqiao Xiao, Yang Lu, Chunping Niu, Yi Wu","doi":"10.1016/j.sab.2025.107196","DOIUrl":"10.1016/j.sab.2025.107196","url":null,"abstract":"<div><div>SF<sub>6</sub> is extensively utilized in gas circuit breakers due to its superior arc-quenching capabilities. However, its strong greenhouse effect and relatively high liquefaction temperature have led to the adoption of buffering gases, such as CO<sub>2</sub>, in combination with SF<sub>6</sub>. Investigating the post-arc process in gas plasma is essential for assessing the arc-quenching performance of the gases and potential applications. Nevertheless, precise diagnostics during the post-arc phase remain challenging due to the non-equilibrium nature and poor stability of the plasma. This study developed a coherent laser Thomson scattering platform to measure the post-arc decay characteristics of gas arcs. A custom triple-grating spectrometer was incorporated to enhance the signal-to-noise ratio at low electron densities. The spatiotemporal electron density decay characteristics of pure SF<sub>6</sub> arcs under varying pressures and SF<sub>6</sub>/CO<sub>2</sub> mixed-gas arcs with different mixing ratios were examined. The results show that, during the thermal recovery phase (0–70 μs), all gas arcs exhibit substantial energy dissipation, with the electron density at the arc center decreasing by two orders of magnitude. As pressure increases, the diameter of the pure SF<sub>6</sub> arc contracts, and the central electron density initially rises. With increasing pressure, a competition emerges between chemical reactions and diffusion-convection effects as the dominant factors influencing electron dissipation. The introduction of buffering gas reduces the recombination rate of positive ions and electrons, thereby decelerating the plasma decay rate. Both the initial electron density and plasma diameter diminish with increasing SF<sub>6</sub> content in the mixture.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107196"},"PeriodicalIF":3.2,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705414","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}

引用次数: 0

Photon counting with intensified charge coupled device (ICCD) – I. In-depth detector characterization

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-24 DOI: 10.1016/j.sab.2025.107194

George C.-Y. Chan

引用次数: 0

New atomic emission lines observed in ICP and dc arc near-infrared spectrum of sulfur

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-22 DOI: 10.1016/j.sab.2025.107189

Dmitry Antonov , Emmanuil Silkis , Vladimir Kolotov

引用次数: 0