Atomic Spectroscopy最新文献_第2页

Determination of Germanium Species by Hydride Generation Atomic Absorption Spectrometry: Comparison of Atomizers Based on Diffusion Flame, Heated Quartz Tube, and Dielectric Barrier Discharge Plasma 利用氢化物发生原子吸收光谱法测定锗的种类：基于扩散火焰、加热石英管和介质阻挡放电等离子体的雾化器比较

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.216

Jan Kratzer

引用次数: 0

Simultaneous Measurement of 147Sm/144Nd and 143Nd/144Nd Ratios in Natural Geological Samples by MC-ICP-MS After One Stage Chemical Purification Using TODGA Resin 使用 TODGA 树脂进行一级化学净化后，利用 MC-ICP-MS 同时测量天然地质样品中的 147Sm/144Nd 和 143Nd/144Nd 比率

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.169

Yueheng Yang

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Determination of Molybdenum, Nickel, and Chromium in Low-alloy Steels Using Laser-induced Breakdown Spectroscopy Assisted with Laser-induced Fluorescence and Discrete Wavelet Transform 利用激光诱导荧光和离散小波变换辅助激光诱导击穿光谱测定低合金钢中的钼、镍和铬

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.142

Jiaming Li

{"title":"Determination of Molybdenum, Nickel, and Chromium in Low-alloy Steels Using Laser-induced Breakdown Spectroscopy Assisted with Laser-induced Fluorescence and Discrete Wavelet Transform","authors":"Jiaming Li","doi":"10.46770/as.2023.142","DOIUrl":"https://doi.org/10.46770/as.2023.142","url":null,"abstract":": Molybdenum, nickel, and chromium play important roles in steel property. Laser-induced breakdown spectroscopy (LIBS) assisted with laser-induced fluorescence (LIF) is a promising technique with high sensitivity to elemental analyses. However, the spectra suffered from strong and unstable background from laser scattering when determining these three elements in steel matrix, which would deteriorate the accuracy. In this work, a self-adaptive method based on discrete wavelet transform (DWT) was introduced to solve this problem. No manual or subjective intervention is needed even if changing spectral ranges and elemental species. The LIBS-LIF spectral data were decomposed by Daubechies wavelet with the wavelet function db7 and the decomposition level 7. Then the spectra were reconstituted with background removal. In quantitative analyses, R squares in calibration curves of chromium, nickel, and molybdenum were greatly increased from 0.976, 0.965, and 0.981 to 0.995, 0.993, and 0.997, respectively; and the root-mean-square errors of cross-validation (RMSECVs) were significantly decreased from 0.0153, 0.0290, and 0.0152 wt.% to 0.00649, 0.00832, and 0.00793 wt.%, respectively. The results demonstrated both calibration model accuracy and analytical accuracy were greatly improved. This work provides an effective and convenient approach for modifying LIBS-LIF analyses in determination of molybdenum, nickel, and chromium in steels.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":"13 1","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139281367","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

Fast Determination of Gas Evolution Volume of Calcium Carbide by Laser-induced Breakdown Spectroscopy 利用激光诱导击穿光谱快速测定碳化钙的气体演化体积

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.152

Ruibin Liu

引用次数: 0

Nitrogen-oxygen Co-doped Magnetic Micro-carbon Adsorbent Derived from Waste Toner Coupled with GFAAS for the Analysis of Trace Lead in Environmental and Biological Samples 从废碳粉中提取的氮氧共掺杂磁性微碳吸附剂与 GFAAS 联用分析环境和生物样品中的痕量铅

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.201

Xiaoxiao Yu

引用次数: 0

Numerical Simulation of Heat Conduction in Laser Ablation Based on Optimal Weight Factor 基于最佳权重因子的激光烧蚀热传导数值模拟

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-11-10 DOI: 10.46770/as.2023.151

Wei-Ming Xu

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Celebrating 60th Anniversary Of Atomic Spectroscopy Journal: New Technology Of Atomic Spectroscopy & Mass Spectrometry 庆祝原子能谱学60周年期刊：原子能谱与质谱新技术

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-08-01 DOI: 10.46770/as.2023.100

W. Guo

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In-Situ Online Detection Of Atmospheric Volatile Organic Compounds Based On Laser Induced Breakdown Spectroscopy: A Review 基于激光诱导击穿光谱的大气挥发性有机物原位在线检测研究进展

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-08-01 DOI: 10.46770/as.2023.117

Yuzhu Liu

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A Quantity Chalcopyrite Reference Material For In Situ Sulfur Isotope Analysis 原位硫同位素分析的定量黄铜矿标准物质

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-08-01 DOI: 10.46770/as.2023.141

Youwei Chen

{"title":"A Quantity Chalcopyrite Reference Material For In Situ Sulfur Isotope Analysis","authors":"Youwei Chen","doi":"10.46770/as.2023.141","DOIUrl":"https://doi.org/10.46770/as.2023.141","url":null,"abstract":": Secondary ion mass spectrometry (SIMS) for sulfur isotope analysis in chalcopyrite is an essential technique with exceptional spatial resolution, which enables precise constraints on mineralization mechanisms. However, the scarcity of matrix-matched chalcopyrite reference materials (RM) for SIMS hinders its accuracy and reliability. This study introduces a large-grained natural chalcopyrite RM (IGSD) for precise sulfur isotope analysis (δ 34 S) using SIMS and laser ablation multicollector-inductively coupled plasma mass spectrometry (LA-MC-ICPMS). Petrographic examination and electron microprobe analysis (EMPA) results confirm the homogeneity of major elements in the IGSD chalcopyrite grains. The results of in situ analysis at four SIMS laboratories and one LA-MC-ICPMS laboratory and bulk analysis confirm the homogeneity of the S isotope composition in the IGSD chalcopyrite grains. The in situ analysis result is consistent with the result of isotope ratio mass spectroscopy (IRMS), which falls within the same range of uncertainty. This supports the suitability of the IGSD chalcopyrite RM for in situ S isotope analysis. The recommended δ 34 S value of the IGSD chalcopyrite RM, based on IRMS, is 4.21 ± 0.23‰ (2SD, n = 30).","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42301201","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

X-Ray Fluorescence Analysis Of Snow Cover Solid Phase For Investigation Of Emissions By Aluminum Industry And Combined Heat And Power Complex 雪覆盖固相的X射线荧光分析用于铝工业和热电联产企业排放调查

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-06-25 DOI: 10.46770/as.2023.115

A. Amosova

{"title":"X-Ray Fluorescence Analysis Of Snow Cover Solid Phase For Investigation Of Emissions By Aluminum Industry And Combined Heat And Power Complex","authors":"A. Amosova","doi":"10.46770/as.2023.115","DOIUrl":"https://doi.org/10.46770/as.2023.115","url":null,"abstract":": X-ray fluorescence method was proposed for a determination of major elements in samples of snow cover solid phase collected in the urban areas of the Irkutsk region near aluminum smelter and combined heat and power plant. The limitation of the analyzed sample mass, which in some cases does not exceed 50 mg, as well as the features of the elemental composition (high Al and low Si contents) require a special methodological approach to quantitative elemental analysis. Due to the lack of matrix-matched certified reference materials, the calibration set includes certified reference materials of igneous and sedimentary rocks as well as aluminum ore samples. Results of X-ray fluorescence method were compared with the results obtained by reference methods including atomic absorption, atomic emission and spectrophotometry methods. It showed that it is necessary to use samples of snow cover solid phase analyzed by reference methods as a calibration set for X-ray fluorescence analysis, which ensures the quantitative determination of major elements (Na, Mg, Al, Si, P, K, Ca, Ti, Mn and Fe). These elements are important for environmental pollution investigation. Al was discovered as a main pollutant produced by aluminum smelter, Si, Ca, Ti, Mn, and Fe - by combined heat and power plant.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43851347","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