Atomic Spectroscopy最新文献_第4页

Elemental Quantitative Imaging Analysis Of Bi4Si3O12 Crystals Defects By LA-ICP-MS LA-ICP-MS对Bi4Si3O12晶体缺陷的元素定量成像分析

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-04-30 DOI: 10.46770/as.2023.080

Zheng Wang

引用次数: 0

Effect Of Sample Injection Volume On Non-Spectroscopic And Spectroscopic Interferences In Inductively Coupled Plasma Mass Spectrometry 电感耦合等离子体质谱中进样量对非光谱和光谱干扰的影响

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-02-25 DOI: 10.46770/as.2023.013

D. Beauchemin

引用次数: 0

Preparation Of Five Selenium-Rich Soil Reference Materials, Their Se, Cr, Ni, Zn, Cd, Pb Mass Fraction Certifications And A Study Of Se Geochemical Fractionation 5种富硒土壤标准物质的制备、Se、Cr、Ni、Zn、Cd、Pb质量分数鉴定及Se地球化学分馏研究

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-02-25 DOI: 10.46770/as.2023.017

Zhenan Bao, H. Tian

引用次数: 0

Characterization Of The Element Distribution And Quantitative Segregation Degree Of Nickel-Based Superalloy Ingot 镍基高温合金铸锭元素分布及定量偏析程度的表征

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.235

Hui Wang

{"title":"Characterization Of The Element Distribution And Quantitative Segregation Degree Of Nickel-Based Superalloy Ingot","authors":"Hui Wang","doi":"10.46770/as.2022.235","DOIUrl":"https://doi.org/10.46770/as.2022.235","url":null,"abstract":": Segregation defects cannot be eliminated from nickel-based superalloy prepared by smelting. Thus, studying the element-content distribution and segregation degree is helpful to guide process improvement and quality control. In this study, the cross section of a cylindrical electro-slag remelting ingot of a wrought superalloy with a diameter of 485 mm was analyzed by micro-beam X-ray fluorescence spectrometry, and continuous point-by-point mode was used to obtain high stability and accuracy. The element-content distribution and quantitative degree of segregation from the edge to the center of the ingot were characterized. The maximum positive segregation, maximum negative segregation, statistic segregation degree, and statistic conformity degree were calculated for each element to quantitatively characterize the degree of segregation from different points of view, and they showed the same trend as the element-content distribution. The results of metallography and scanning electron microscopy with energy-dispersive spectroscopy (SEM-EDS) showed that there were differences in the dendritic microstructures and precipitated phases in the interdendrites and dendritic arms from the edge to the center of the ingot, which explain the element-content distribution largely.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43906799","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: 2

UV Induced Advanced Oxidation Process For The Degradation Of Organic Mercury And Its Application To Mercury Speciation By Atomic Fluorescence Spectrometry 紫外诱导高级氧化法降解有机汞及其在原子荧光光谱汞形态分析中的应用

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.228

Zhifu Liu

{"title":"UV Induced Advanced Oxidation Process For The Degradation Of Organic Mercury And Its Application To Mercury Speciation By Atomic Fluorescence Spectrometry","authors":"Zhifu Liu","doi":"10.46770/as.2022.228","DOIUrl":"https://doi.org/10.46770/as.2022.228","url":null,"abstract":"A new online advanced oxidation process with high efficiency was proposed for the degradation of organic mercury. The oxidation process is based on a high-efficiency photooxidation reactor in which the reaction tube was passed through a low-pressure mercury lamp. The reactor provided efficient irradiation which resulted in the complete degradation of methylmercury and ethylmercury within 4 s and 6 s, respectively. The highlight of this method is the removal of oxidants and high temperature. The oxidation process is extremely high efficiency and therefore is easy to be coupled with flow injection (FI) and high-performance liquid chromatography (HPLC). In FI system, complete oxidations of organic mercury can be accomplished in the plain medium of 0.5% (v/v) HCl, 1% (v/v) HNO3 and H2O, therefore, simple Hg aqueous standard calibration curves can be used to calibrate both inorganic and organic mercury. The detection limits of Hg, CH3Hg and CH3CH2Hg were found to be 0.02 ng mL. In HPLC system, the detection limits were calculated to be 0.55, 0.84, 0.56 ng ml for Hg, CH3Hg and CH3CH2Hg, respectively. In addition, the method provided good repeatability (< 5% RSD) for both systems. The developed method was validated by determination of certified reference material (GBW 10029, tuna fish) and was further applied in speciation of mercury in spiked environmental waters and biological samples.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49267857","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

Imaging Of Ce In Cucumber Leaves By Cryogenic Laser Ablation Inductively Coupled Plasma Mass Spectrometry 低温激光烧蚀电感耦合等离子体质谱法对黄瓜叶片中铈的成像

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.234

Mingli Chen, Jianhua Wang

引用次数: 5

Detection And Recognition Of Volatile Substances In Mothballs Using Laser-Induced Breakdown Spectroscopy And Raman Spectroscopy 激光诱导击穿光谱和拉曼光谱法检测和识别樟脑丸中的挥发性物质

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.231

Yuzhu Liu

引用次数: 0

Ferrofluid-Based Preconcentration And Ultra-Trace Determination Of Pt, Pd, Au, And Ag In Complex Matrices Using Inductively Coupled Plasma Mass Spectrometry 基于铁磁流体的预富集和使用电感耦合等离子体质谱法在复杂基质中超痕量测定Pt, Pd, Au和Ag

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.229

D. Beauchemin

{"title":"Ferrofluid-Based Preconcentration And Ultra-Trace Determination Of Pt, Pd, Au, And Ag In Complex Matrices Using Inductively Coupled Plasma Mass Spectrometry","authors":"D. Beauchemin","doi":"10.46770/as.2022.229","DOIUrl":"https://doi.org/10.46770/as.2022.229","url":null,"abstract":": This study presents a method for the ultra-trace determination of several noble metals (Pd, Pt, Au, and Ag) in geological samples through selective preconcentration using a ferrofluid. Specifically, Fe 3 O 4 magnetic nanoparticles (MNPs) coated with silica and titania and functionalized with 3-mercaptopropyltrimethoxysilane and N-(2-aminoethyl)-3-aminopropyltrimethoxysilane were employed for the selective sorption of analytes. After injecting the ferrofluid into an aqueous sample, the functionalized MNPs adsorbed the target analytes within 5 min. The analyte-carrying MNPs were then separated using an external magnet, followed by elution using 10% v/v aqua regia + 3% thiourea. The eluate was analyzed using inductively coupled plasma mass spectrometry. The effects of sample solution pH, eluent composition, elution time, and elution volume on the preconcentration factor were investigated. Under optimized conditions, the detection limits were improved by factors of 8 to 15 for Pt, Pd, Au, and Ag, compared to those obtained without preconcentration. The accuracy of this method was verified by analyzing a certified reference material (CDN-PGMS-29) of ore containing noble metals, and the measured concentrations were consistent with the certified values based on a Student’s t-test at the 95% confidence level.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47315691","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

An Infrared-Heated Sample Introduction System For Inductively Coupled Plasma Mass Spectrometry 电感耦合等离子体质谱的红外加热样品导入系统

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.233

D. Beauchemin

引用次数: 3

Determination Of The Isotopic Composition Of An Enriched Lutetium Spike By MC-ICP-MS MC-ICP-MS法测定富集镥穗的同位素组成

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2022-11-01 DOI: 10.46770/as.2022.188

K. Zong

{"title":"Determination Of The Isotopic Composition Of An Enriched Lutetium Spike By MC-ICP-MS","authors":"K. Zong","doi":"10.46770/as.2022.188","DOIUrl":"https://doi.org/10.46770/as.2022.188","url":null,"abstract":"In geochronology, the isotope dilution (ID) method has been developed as an analytical method that provides accurate and precise element concentration and isotope ratio. For the ideal application of spiked sample, the critical prerequisite is the accurate isotopic composition of spike, which is commonly challenging to determine accurately. In this study, we report the first independent measurement of lutetium (Lu) isotopic composition in a Lu spike by multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) using an optimized regression mass bias correction model. The rhenium (Re) reference material (NIST SRM 3143), previously calibrated against the NRC CRM IRIS-1 isotopic iridium (Ir), was selected as the primary calibrant to calibrate the Lu isotope ratio in Lu spike. The obtained ratio of R175/176 Lu was ..19994 .....5. (u, k11), which meets the required precision levels for the Lu-Hf isotopic system application. The accuracy of the Lu Hf isochron age was improved by the application of the precisely calibrated Lu spike, and this Lu spike was successful applied for the determination of Lu concentration in geological reference material. The application of the optimized regression model was further broadened by determining the isotopic composition of the Lu spike.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":null,"pages":null},"PeriodicalIF":3.4,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48162052","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