Spectrochimica Acta Part B: Atomic Spectroscopy最新文献_第7页

Deuterium release from beryllium layers by laser induced plasma ablation and laser induced desorption coupled with quadrupole mass spectrometry 激光诱导等离子体烧蚀和激光诱导解吸耦合四极杆质谱分析铍层中氘的释放

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 用汤姆森散射法测量SF6和SF6/CO2混合电弧弧后电子密度

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 光子计数与强化电荷耦合装置(ICCD) - 1 .深入的探测器表征

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 在硫的ICP和直流电弧近红外光谱中观察到新的原子发射谱线

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

Photon counting with intensified charge coupled device (ICCD) – II. Laser induced breakdown spectroscopy (LIBS) spectral measurement 光子计数与强化电荷耦合器件(ICCD) - II。激光诱导击穿光谱（LIBS）光谱测量

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-22 DOI: 10.1016/j.sab.2025.107195

George C.-Y. Chan

{"title":"Photon counting with intensified charge coupled device (ICCD) – II. Laser induced breakdown spectroscopy (LIBS) spectral measurement","authors":"George C.-Y. Chan","doi":"10.1016/j.sab.2025.107195","DOIUrl":"10.1016/j.sab.2025.107195","url":null,"abstract":"<div><div>This study explores the application of photon counting (PC) to enhance the resolution of spectra acquired by an intensified charge-coupled device (ICCD) detector, with a focus on analytical atomic emission spectrometry using laser-induced breakdown spectroscopy (LIBS) as a use-case example. It demonstrates that, for spectra obtained with the same spectrometer–ICCD system, PC provides higher spectral resolution compared to conventional analog detector readout. This enhancement is particularly evident in the line wings of spectral peaks, facilitating better discrimination of isotopic peaks in the measured spectra. Although PC does not improve the resolution of an optical spectrometer directly, it rectifies the resolution lost caused by signal spreading in conventional ICCD analog measurement. However, similar to other counting techniques, excessive photons compromise detector linearity due to signal pileup. A correction model is proposed to mitigate the pileup effect, resulting in improved linearity and dynamic range in PC measurements. Additionally, the study reveals unexpected periodic structures in the flatfield image of the ICCD, which cause non-uniform detector gain in conventional analog as well as PC measurement modes and must be addressed for high-precision measurements.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107195"},"PeriodicalIF":3.2,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716274","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

Surfactant-assisted au nanostructures with Micro-hole Array sprayer for enhanced LIBS detection of trace heavy metals in water 表面活性剂辅助金纳米结构与微孔阵列喷雾增强水中痕量重金属的LIBS检测

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-20 DOI: 10.1016/j.sab.2025.107193

Jiamin Li , Kezeng Pan , Changhong Zhang , Yuanyuan Xue , Shilei Zhong , Ye Tian , Junxian Lu

{"title":"Surfactant-assisted au nanostructures with Micro-hole Array sprayer for enhanced LIBS detection of trace heavy metals in water","authors":"Jiamin Li , Kezeng Pan , Changhong Zhang , Yuanyuan Xue , Shilei Zhong , Ye Tian , Junxian Lu","doi":"10.1016/j.sab.2025.107193","DOIUrl":"10.1016/j.sab.2025.107193","url":null,"abstract":"<div><div>Heavy metal pollution threatens human health and ecosystems, and countries have established strict standards for heavy metal content in water bodies. This paper presents a new method based on micro-hole array sprayed on solid substrate enhanced laser-induced breakdown spectroscopy (MASSS-LIBS) technology and NELIBS, which enables high sensitivity and multi-element detection at the μg/L level. The method involves sequentially spraying metal nanomaterials, water samples, and surfactants onto a silicon substrate to form nanostructures that are conducive to LIBS analysis. Experimental research examined the impact of key parameters, including surfactant type and nanoparticle preparation, on signal quality. Results showed significant improvements in signal intensity and stability after forming nanostructures compared to using only Au nanoparticles. Different surfactants provided varying LIBS enhancements for heavy metals, with sodium dodecyl sulfate (SDS) demonstrating superior enhancement and stability for Pb, Cr, Cu, and Mn. Controlling nanoparticle density through spraying time for Au NPs helped manage nanostructure surface density and reduce Au nanoparticle loss, further enhancing LIBS signals. Under optimized parameters, the intensity of LIBS spectral peaks following nanostructure formation was approximately 10 times higher than that observed without nanostructures, with a stability of 6 %. The LoD for Mn reached sub-μg/L levels, while the LoD for Cu, Cr, and Pb was approximately several μg/L, demonstrating a one-order-of-magnitude improvement. In eleven quantitative inversion experiments in the low concentration range of tens of μg/L. Overall, this method shows potential as an alternative for qualitative and quantitative analyses in water quality testing.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107193"},"PeriodicalIF":3.2,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685711","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

Experimental transition probabilities and oscillator strengths of singly ionised Xenon (Xe II) in the ultraviolet. A fully statistical approach to the determination of uncertainties 单电离氙（Xe II）在紫外中的实验跃迁概率和振子强度。确定不确定性的完全统计方法

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-20 DOI: 10.1016/j.sab.2025.107190

Maria Teresa Belmonte , Santiago Mar , Stevica Djurović , José Antonio Menéndez , Lazar Gavanski

{"title":"Experimental transition probabilities and oscillator strengths of singly ionised Xenon (Xe II) in the ultraviolet. A fully statistical approach to the determination of uncertainties","authors":"Maria Teresa Belmonte , Santiago Mar , Stevica Djurović , José Antonio Menéndez , Lazar Gavanski","doi":"10.1016/j.sab.2025.107190","DOIUrl":"10.1016/j.sab.2025.107190","url":null,"abstract":"<div><div>We report 92 experimental values of transition probabilities and oscillator strengths for singly ionised xenon (Xe II) in the ultraviolet region (217–385 nm), 91 of which have been measured for the first time. The transition probabilities were obtained from the analysis of spectra emitted by a plasma in partial local thermodynamic equilibrium (pLTE) generated in a pulsed-discharge lamp. The resolving power of our experimental setup is 120,000 at 380 nm. The novelty of this work lies in its use of an exponential fitting technique rather than the linear Boltzmann Plot method. We include a detailed, purely statistical analysis of the uncertainties of our new measurements, together with an in-depth explanation of our measurements to promote transparency and reproducibility. We have implemented this fully statistical approach to the calculation of the uncertainties in a code developed in our laboratory, which can be freely downloaded from our laboratory's Zenodo repository to support Open Science and help other atomic data producers to calculate the uncertainties of their measurements. The uncertainties of our new transition probabilities are smaller than 15 % for 11 % of the lines and <span><math><mo>≤</mo></math></span>30 % for 87 % of the spectral lines.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107190"},"PeriodicalIF":3.2,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716273","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

High-resolution spectroscopy of uranium laser-produced plasma using saturated absorption spectroscopy 使用饱和吸收光谱的铀激光产生的等离子体的高分辨率光谱

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-20 DOI: 10.1016/j.sab.2025.107191

Mathew P. Polek , Mark C. Phillips , Farhat N. Beg , Sivanandan S. Harilal

引用次数: 0

Method validation and measurement uncertainty estimation in trace element determinations in water samples using total reflection X-rays fluorescence spectrometry 全反射x射线荧光光谱法测定水样中微量元素的方法验证和测量不确定度评定

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-18 DOI: 10.1016/j.sab.2025.107192

Lee Suan Chua , Choon Yang Tee , Suan Gaik Tan

{"title":"Method validation and measurement uncertainty estimation in trace element determinations in water samples using total reflection X-rays fluorescence spectrometry","authors":"Lee Suan Chua , Choon Yang Tee , Suan Gaik Tan","doi":"10.1016/j.sab.2025.107192","DOIUrl":"10.1016/j.sab.2025.107192","url":null,"abstract":"<div><div>This study validated a spectrometric method to determine the concentration of 8 elements such as chromium, manganese, iron, nickel, copper, zinc, arsenic and lead in water samples using total reflection X-ray fluorescence (TXRF). Method validation was conducted to determine its linearity, precision, limit of detection (LOD), limit of quantitation (LOQ), reproducibility and robustness using a certified multielement standard. A broad linear range of concentration was achieved for the elements with high coefficient of determination, R<sup>2</sup> > 0.99, particularly the linearity of Fe and Zn extended up to 10,000 μg/L. Five replicate analyses reported high repeatability or precision with <5 % relative standard deviation. The LOD (0.88–2.37 μg/L) and LOQ (2.92–7.91 μg/L) inversely increased with the decreasing atomic number of elements. Highly reproducible results were achieved with the relative percent difference (RPD), <9 % between 2 different operators over a few weeks of testing. The spectrometer still maintained its robustness with <4 % RPD, even operating at elevated temperature at 32 °C. Method performance was verified through spiking tests in drinking water with 82.6 %–103.9 % recovery at 100–300 μg/L. Its high performance was also verified with element recoveries of 81.4 %–112.8 % at 300 μg/L in the complex matrix interference background of groundwater. The participation of proficiency testing for elements in waste water achieved satisfactory results with the z-score < 0.7. Instrument sensitivity was the main contributor of measurement uncertainty, ranging from 11.8 % to 12.8 % of the measured values. Therefore, TXRF is a fast, reliable and feasible technique for trace elemental analysis as demonstrated from its validation and verification data.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"228 ","pages":"Article 107192"},"PeriodicalIF":3.2,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143680647","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

How to address self-absorption in LIBS using millisecond time-width detectors 如何解决自吸收在LIBS使用毫秒时宽探测器

IF 3.2 2区化学

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-03-14 DOI: 10.1016/j.sab.2025.107188

Rodolfo Ariel Pérez , Yenner Paul Gómez Sánchez

引用次数: 0