Spectrochimica Acta Part B: Atomic Spectroscopy最新文献

{"title":"Fate of laser-induced plasma material: Particle formation and re-deposition effects in micro-LIBS scanning applications","authors":"Vincent Motto-Ros ,&nbsp;Frederic Pelascini ,&nbsp;Marcella Dell'Aglio ,&nbsp;Alessandro De Giacomo","doi":"10.1016/j.sab.2025.107240","DOIUrl":"10.1016/j.sab.2025.107240","url":null,"abstract":"<div><div>This paper aims to investigate the fate of ablated material during LIBS imaging and assess the potential impact of re-deposited material on the sample's elemental quantification. A standard brass alloy (80/20 % Cu/Zn) embedded in pure epoxy resin was used as the sample for this study. The particles produced during the LIBS imaging experiment were collected over a large area, spanning several millimeters, and analyzed using High-Resolution Optical Microscopy and Scanning Electron Microscopy. Time-resolved Laser-Induced Plasma images were utilized to interpret the particles distribution, revealing two distinct groups —nanoparticles and microparticles—after plasma extinction. Based on these observations, the effects of plasma condensation, plasma charging, and shockwave transport on the ablated material are discussed. Finally, the impact of re-deposited particles on elemental analysis during LIBS imaging is critically examined.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107240"},"PeriodicalIF":3.2,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147008","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 3-D simulation model for X-ray path length and yield variation in micro-PIXE analysis of rough surfaces","authors":"Ebrahim Gholami Hatam","doi":"10.1016/j.sab.2025.107238","DOIUrl":"10.1016/j.sab.2025.107238","url":null,"abstract":"<div><div>A crucial aspect of PIXE/XRF analysis is accurately modeling the behavior of emitted X-rays as they traverse the sample, significantly influencing the intensity and detectability of the X-rays. This study presents a comprehensive simulation program designed to model surface topography and calculate X-ray path lengths in 1-D, 2-D, and 3-D views of samples. The model is applied to Micro-PIXE analysis and integrates key physical parameters, including stopping power, X-ray production cross-section, photon attenuation, and local photon creation to estimate the correct X-ray intensity map. Additionally, the simulation accounts for severe surface roughness, where X-rays may exit and re-enter the sample multiple times along their trajectory toward the spectrometer. The X-ray path length and its effect on the accumulated X-ray yield are calculated on both mathematical surface topography and experimental data obtained from Micro-PIXE using a four-segment silicon drift detector (SDD), revealing a remarkable correlation that underscores the importance of detailed X-ray path length calculations. By demonstrating the impact of path length on the accumulated X-ray yield for rough surfaces of varying microscale, this approach could enhance the accuracy of X-ray intensity predictions, leading to more precise elemental composition analysis in X-ray spectroscopy techniques.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107238"},"PeriodicalIF":3.2,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144147007","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":"Determination of minor and trace elements in human hair - an interlaboratory comparison","authors":"Dariusz Banaś ,&nbsp;Aldona Kubala-Kukuś ,&nbsp;Ilona Stabrawa ,&nbsp;Karol Szary ,&nbsp;Jolanta Wudarczyk-Moćko ,&nbsp;Paweł Jagodziński ,&nbsp;Grzegorz Wesołowski ,&nbsp;Stanisław Góźdź ,&nbsp;Joanna Chwiej ,&nbsp;Paweł Wróbel ,&nbsp;Eva Marguí ,&nbsp;Jasna Jablan ,&nbsp;Sofia Pessanha ,&nbsp;Hagen Stosnach ,&nbsp;Laura Borgese","doi":"10.1016/j.sab.2025.107236","DOIUrl":"10.1016/j.sab.2025.107236","url":null,"abstract":"<div><div>This article discusses the results of an interlaboratory comparison for the analysis of elemental concentration in human hair samples as an example of a human biological material. The analysis concerned the determination of the content of the following elements: P, S, Cl, K, Ca, Ti, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Br, Rb, Sr, Mo, Pb and Hg. Six laboratories from five countries (Poland, Germany, Spain, Portugal, and Croatia) participated in the interlaboratory comparison and performed the analyses using the following methods: TXRF (three laboratories), μ-EDXRF (one laboratory), ICP-OES (one laboratory), and ICP-MS (two laboratories). The statistical analysis of the results was performed separately for the TXRF measurements and also including the results obtained using other measurement techniques. The element concentrations obtained by TXRF cover wide range from about 0.2 mg/kg (Mn As Se Rb Sr Pb) to 37,000 mg/kg (S). Additionally, for the TXRF technique, the detection limits (from 0.1 mg/kg to 20–80 mg/kg (the lightest element P)) as well as the intra-day (from 0.2 % to 22 %) and inter-day (from 0.3 % to 19 %) precisions were estimated. For identification and rejection of outliers the Dixon's and the Grubbs' tests were applied. For the remaining results the consensus mean values and standard deviations of element concentrations were calculated. Next, these parameters were used to determine the z-scores for concentration of each element ranging in the interval − 2 ≤ z ≤ 2. In order to compare the dispersion of results, coefficients of variation were determined. It was shown, that the value of variation coefficient depends on the studied element and its concentration in the sample. The obtained results made it possible to estimate the reproducibility of elemental analysis of hair samples performed using various methods in a wide range of atomic numbers and element contents.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107236"},"PeriodicalIF":3.2,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123469","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":"Real-time monitoring of trace noble gases using laser-induced breakdown spectroscopy—An investigation of the impact of bulk gas on plasma properties and sensitivity","authors":"Hunter B. Andrews ,&nbsp;Zechariah B. Kitzhaber ,&nbsp;Joanna McFarlane","doi":"10.1016/j.sab.2025.107237","DOIUrl":"10.1016/j.sab.2025.107237","url":null,"abstract":"<div><div>The impact of Ar and He bulk gases on laser-induced breakdown spectroscopy (LIBS) real-time monitoring of trace Xe and Kr was assessed. LIBS is being developed as a monitoring tool for measuring noble gas transport in molten salt systems, in which traditional sensors may face challenges associated with radiation, corrosive materials, and/or mixed phases. The plasma temperature and electron densities of LIBS plasmas were measured in both static and various flowing Ar and He streams (0–5 L min⁻¹). The use of an Ar bulk gas resulted in higher plasma temperature, greater electron densities by an order of magnitude, and extended plasma lifetime compared with when He bulk gas was used. Gas flow rate was found to have little impact on plasma temperature; however, its effect on electron density was significant, indicating the need to consider flow rate–specific models. Matrix effects on emission peaks were reported for both bulk gases. Due to these matrix effects, multivariate models were developed for Xe and Kr ranging from 0 to 700 ppm in both bulk gases. Although the predictive behavior was similar (root mean square error of prediction ranging from 11.1 to 20.6 ppm), the limits of detection were superior in He (Xe: 22.9 ppm, Kr: 30.4 ppm). These models were employed in demonstrative real-time tests (&gt;1 h), which showed strong predictive precision (relative standard deviation &lt;5 %) regardless of the bulk gas. Ultimately, this study provides a guide for the considerations required when developing gaseous LIBS models for real-time monitoring.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107237"},"PeriodicalIF":3.2,"publicationDate":"2025-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106933","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 underwater microimage long-pulse LIBS system: Development and preliminary testing","authors":"Mingda Sui ,&nbsp;Bin Zhao ,&nbsp;Ziwen Jia ,&nbsp;Yuanyuan Xue ,&nbsp;Qingsheng Liu ,&nbsp;Meng Li ,&nbsp;Ye Tian ,&nbsp;Yuan Lu ,&nbsp;Xilin Zhang ,&nbsp;Jinjia Guo","doi":"10.1016/j.sab.2025.107234","DOIUrl":"10.1016/j.sab.2025.107234","url":null,"abstract":"<div><div>In recent years, underwater systems based on Laser-Induced Breakdown Spectroscopy (LIBS) technology have successfully performed elemental analysis of seawater and seabed minerals. Long-pulse LIBS has demonstrated its advantages for deep-sea mineral in-situ detection. However, current reports on deep-sea long-pulse LIBS systems face challenges such as large system size, the requirement for commercial long-pulse laser, and the lack of synchronized imaging capabilities. These issues have somewhat hindered the further application of long-pulse LIBS in deep-sea exploration. This paper presents, for the first time, a miniaturized deep-sea long-pulse LIBS in-situ detection system with integrated microscopic imaging capabilities (iLIBSea). The system uses a custom-designed, commercially available compact long-pulse laser, and incorporates a synchronized microscopic imaging module with a 1.46*1.46 mm field of view and a lateral resolution of 7.8 μm. The system has a maximum operational depth of 5000 m and a total weight of 60 kg. Through special design, the ultraviolet spectral signal is preserved to the maximum extent. High-quality spectral detection was achieved with a low energy of 4 mJ, and the detection limits for Cu and Mn were determined to be 97.1 ppm and 21.7 ppm, respectively. And the long-pulse LIBS was able to acquire high-quality spectra even under simulated 50 MPa pressure conditions. With the further system miniaturization, the long-pulse LIBS system would be widely used in deep-sea mineral exploration.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107234"},"PeriodicalIF":3.2,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144115303","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":"LIBS for soil analysis: Effects of sample heating and high-voltage re-excitation on plasma characteristics","authors":"A. Ramírez-Buenrostro ,&nbsp;H. Sobral ,&nbsp;M. Amador-Mejía ,&nbsp;A. Robledo-Martinez","doi":"10.1016/j.sab.2025.107235","DOIUrl":"10.1016/j.sab.2025.107235","url":null,"abstract":"<div><div>While LIBS is a proven technique for monitoring elemental traces in soils, its signal-to-noise ratio is lower than comparable methods. Enhancement techniques such as sample heating and applying a high-voltage (HV) discharge have shown potential to increase emission and improve LIBS sensitivity. This study investigates the combined effect of these techniques on plasma morphology, physical parameters, and the validity of local thermodynamic equilibrium (LTE). Plasma was produced by a nanosecond Nd:YAG laser beam focused on loam soil samples at 22 and 400 °C. A high-voltage discharge lasting about 10 μs was applied 1.5 μs after the laser irradiation. Plasma morphology was studied using fast photography; electron density was obtained through Stark broadening and temperature from Saha-Boltzmann plots, both with spatial and temporal resolution. LTE was tested by McWhirter criterion and two criteria for nonhomogeneous and transient plasmas. Results showed that sample heating doubled plasma lifetime and increased emission, while the HV discharge enhanced emission but induced turbulence, accelerating plasma disruption. Plasma temperature increased by 16 % when the discharge was applied while an increment of 10 % was obtained with sample heating alone; electron density rose by 80 % in both cases. Combining both techniques, the temperature increased by approximately 20 % and electron density by 130 %. Along the axial direction, increases were almost uniform. Radially, higher increases occurred near the cathode. The differential displacement of the ion and neutral clouds suggests that the HV discharge induced species polarization. LTE criteria were satisfied for all studied scenarios, in the range from 500 nm to 10 μs, after the laser onset. Our findings suggest that increased electron density and temperature result in the enhanced spectral emission observed. Finally, a laser-induced plasma may sustain LTE even under re-excitation or external perturbations.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107235"},"PeriodicalIF":3.2,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144083782","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":"Corrigendum to “Total-reflection X-ray fluorescence analysis (TXRF) of plant's guttation fluids as a new, fast, and non-invasive strategy for the assessment of the bioavailability of Zn, Cd and Pb in contaminated soils” [Spectrochimica Acta Part B: Atomic Spectroscopy 230 (2025) 107217]","authors":"Carlo Porfido ,&nbsp;Ignazio Allegretta ,&nbsp;Eva Marguí ,&nbsp;Matteo Garau ,&nbsp;Maria Vittoria Pinna ,&nbsp;Concetta Eliana Gattullo ,&nbsp;Roberto Terzano ,&nbsp;Matteo Spagnuolo","doi":"10.1016/j.sab.2025.107226","DOIUrl":"10.1016/j.sab.2025.107226","url":null,"abstract":"","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107226"},"PeriodicalIF":3.2,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931894","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":"Outside Front Cover - Journal name, Cover image, Volume issue details, ISSN, Cover Date, Elsevier Logo and Society Logo if required","authors":"","doi":"10.1016/S0584-8547(25)00112-0","DOIUrl":"10.1016/S0584-8547(25)00112-0","url":null,"abstract":"","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"229 ","pages":"Article 107227"},"PeriodicalIF":3.2,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928968","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":"Effect of oxide pellet density on laser sampling for LIBS and LA-ICPMS","authors":"U.K. Maity ,&nbsp;J. Namitha ,&nbsp;D. Maji ,&nbsp;P. Manoravi","doi":"10.1016/j.sab.2025.107225","DOIUrl":"10.1016/j.sab.2025.107225","url":null,"abstract":"<div><div>Laser-induced breakdown spectroscopy (LIBS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICPMS) are employed in this article to evaluate the effect of sintering and sample density on the measurements. Two sets of U-Zr oxide pellets of different mass densities are prepared by calcination at two different temperatures. The novelty of the present study is to determine the effect of U-Zr oxide pellet density on laser sampling for two independent techniques (LIBS and LA-ICPMS). The impact of sample density on figure-of-merits is discussed in detail. Sintering at higher temperatures in a reducing atmosphere (Ar/H₂) increases pellet density and improves signal intensity, correlation coefficient (<em>R</em>²), detection limit, precision, and accuracy for LIBS. A similar effect of pellet density is observed for LA-ICPMS result with 1064 nm Nd:YAG laser, whereas there is a negligible effect with 193 nm ArF excimer laser.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107225"},"PeriodicalIF":3.2,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928250","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":"Depth profiling the elemental composition with negative muons: Monte Carlo based tools for improved data analysis","authors":"M. Cataldo ,&nbsp;A.D. Hillier ,&nbsp;O. Cremonesi ,&nbsp;F. Grazzi ,&nbsp;S. Porcinai ,&nbsp;M. Clemenza","doi":"10.1016/j.sab.2025.107224","DOIUrl":"10.1016/j.sab.2025.107224","url":null,"abstract":"<div><div>Gildings, patinas and alteration crusts are common features of many heritage artefacts, especially for metals. Their size depends on many factors, like the manufacturing method for gildings or the conservation state for alteration crusts: in some cases, it can be in the scale of the tens of microns. Such thickness would be difficult to investigate with classical non-destructive methods and would prevent getting information from the bulk of the sample. This work proposes an innovative approach for the study of multi-layered materials with the Muonic atom X-ray Emission Spectroscopy technique (μ-XES). Based on the detection of the high-energy X-rays emitted after the muon capture by the atom, this method is characterised by a remarkable penetration depth (from microns to cm). From the surface to the bulk, this technique can evaluate the variation of the elemental composition as a function of depth. The paper focuses on providing an improved interpretation of μ-XES data by coupling the analysis with the use of two Monte Carlo simulation software, GEANT4/ARBY and SRIM/TRIM. With these two software, it is possible to replicate the negative muon experiments and compare the experimental and simulated outputs to address the size of a given layer. To validate this approach, a set of standard gilded bronze and brass foils were measured at the ISIS Neutron and Muon source. From simulations, it was possible to evaluate the thickness of the superficial gold layer, with results in agreement with the preliminary SEM characterisation of the samples.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"230 ","pages":"Article 107224"},"PeriodicalIF":3.2,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143928249","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}