Atomic Spectroscopy最新文献_第4页

Thiophene Functionalized Magnetic Covalent Organic Frameworks For Selective Extraction Of Trace Heavy Metals Followed By ICP-MS Detection 噻吩功能化磁性共价有机框架选择性萃取痕量重金属并进行ICP-MS检测

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-04-30 DOI: 10.46770/as.2023.088

M. He

{"title":"Thiophene Functionalized Magnetic Covalent Organic Frameworks For Selective Extraction Of Trace Heavy Metals Followed By ICP-MS Detection","authors":"M. He","doi":"10.46770/as.2023.088","DOIUrl":"https://doi.org/10.46770/as.2023.088","url":null,"abstract":": Magnetic covalent organic frameworks (COFs) were prepared using aminated Fe 3 O 4 nanoparticles as the magnetic core and 1,3,5-tris(4-aminophenyl)benzene (TPB) and 2,5-dimethoxyterephthalaldehyde (DMTA) as monomers. The resultant Fe 3 O 4 @TPB-DMTP-COF was then post-modified with 3-ethynylthiophene through the “Aza D-A reaction”. The Fe 3 O 4 @COF-thiophene composite showed a high Brunauer-Emmett-Teller surface area of 898 m 2· g -1 , as well as a high content of S (5.27 w.t.%). Trace mercury (Hg), lead (Pb), and bismuth (Bi) ions were extracted from environmental water samples, followed by inductively coupled plasma mass spectrometry (ICP-MS) detection. Extraction conditions, such as extraction pH, sample volume, adsorbent amount, extraction/desorption time and elution volume, were optimized. Under the optimal conditions, the three heavy metal ions were extracted from 150 mL of aqueous solution within 20 min and eluted with 0.1 mol L -1 HNO 3 containing 8% cysteamine hydrochloride within 20 min. The method exhibited a high enrichment factor (188) and wide linear range of 3-5000 ng·L - 1 for Hg 2+ /Pb 2+ and 2-2000 for Bi 3+ , with the detection limits of 0.41, 0.97 and 0.47 ng∙L -1 , respectively. Furthermore, the reproducibility of the method was evaluated, and the relative standard deviations of Hg 2+ , Pb 2+ and Bi 3+ were found to be 7.5, 6.8 and 6.2% (n = 7, c = 3 ng∙L -1 ), respectively. The accuracy of this method was verified by analyzing certified reference materials in environmental water, including GSB 07-1185-2000 (202047), GSB 07-1185-2000 (201239) and BY 400143 (B2003113). The application potential of this method was further evaluated by analyzing real environmental water samples. Target Hg 2+ and Pb 2+ ions concentrations were found to be 4.91 and 62.5 ng∙L -1 , respectively, in the East Lake water sample and 10.2 and 103 ng·L - 1 , respectively, in the Yangtze River water sample. The recoveries of target three metal ions were found to be 86.1-104 % in the two environmental water samples at three spiked concentration levels.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41711526","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

Detection Of Myeloperoxidase And Osteopontin In Human Serum Using Single Particle-ICP-MS With MoS2 And ZnS Quantum Dots MoS2和ZnS量子点单粒子ICP-MS法检测人血清中髓过氧化物酶和骨桥蛋白

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-04-30 DOI: 10.46770/as.2023.042

Yupin Cao, Biyang Deng

引用次数: 0

Integration Of Hydrogen Evolution Reaction And Microplasma Induced Vapor Generation: A Strategy For Improving Safety And Sensitivity Of Microplasma Optical Emission Spectrometry 析氢反应与微等离子体诱导蒸汽生成的集成:提高微等离子体光学发射光谱安全性和灵敏度的策略

IF 3.4 2区化学

Atomic Spectroscopy Pub Date : 2023-04-30 DOI: 10.46770/as.2023.091

C. Zheng

{"title":"Integration Of Hydrogen Evolution Reaction And Microplasma Induced Vapor Generation: A Strategy For Improving Safety And Sensitivity Of Microplasma Optical Emission Spectrometry","authors":"C. Zheng","doi":"10.46770/as.2023.091","DOIUrl":"https://doi.org/10.46770/as.2023.091","url":null,"abstract":": Microplasma-induced vapor generation (μPIVG), particularly using only hydrogen, has attracted increasing attention in the field of atomic spectrometry. However, its application for field analysis of environmental samples remains limited owing to the difficulty of hydrogen storage and transportation. Herein, a non-noble metal electrode-based hydrogen evolution reaction (HER) was utilized as a safe and environment-friendly hydrogen supply method for the efficient μPIVG of Hg, Cd and Zn. Subsequently, HER-μPIVG was used for the sensitive field detection of Hg, Cd and Zn in environmental samples via miniature point discharge optical emission spectrometry (μPD-OES). In contrast to conventional hydrogen-enhanced μPIVG, hydrogen was produced in situ and in real time using a superior cathode composed of cobalt-phosphorous nanomaterial, eliminating the storage and transport of hydrogen requirements and improving the safety, sensitivity, and feasibility of μPIVG-μPD-OES. Under the optimized conditions, the limits of detection (LODs) were 0.8, 10, and 14 μg L −1 for Hg, Cd, and Zn, respectively, with relative standard deviations (RSDs) of < 4.7%. The accuracy and practicability of the proposed method were validated through Hg, Cd, and Zn determinations in two certified reference materials (CRMs) and several water samples with satisfactory results.","PeriodicalId":8642,"journal":{"name":"Atomic Spectroscopy","volume":" ","pages":""},"PeriodicalIF":3.4,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46453887","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

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":" ","pages":""},"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":" ","pages":""},"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