Spectroscopy最新文献_第8页

Infrared Spectroscopy of Polymers X: Polyacrylates 聚合物X:聚丙烯酸酯的红外光谱

IF 0.5 4区化学

Spectroscopy Pub Date : 2023-01-01 DOI: 10.56530/spectroscopy.mi9381w4

B. Smith

引用次数: 4

Three-Dimensional Printing and the Art of Making Small Working Prototype Spectrometers 三维打印和制作小型工作原型光谱仪的艺术

IF 0.5 4区化学

Spectroscopy Pub Date : 2023-01-01 DOI: 10.56530/spectroscopy.hu6980q3

J. Coates

引用次数: 0

Smoothing of the Time-Resolved Spectral Matrix Obtained by a Streak Camera: Estimation of the Fluorescence Band Parameters 由条纹相机获得的时间分辨光谱矩阵的平滑:荧光带参数的估计

IF 0.5 4区化学

Spectroscopy Pub Date : 2023-01-01 DOI: 10.56530/spectroscopy.kj3680j3

J. Dubrovkin, V. Tomin, A. Krzysztofowicz

引用次数: 1

Exploration of the Use of Raman Microscopy to the Identification of Extractables and Leachables from Polymeric Containers 利用拉曼显微镜鉴定聚合物容器中可萃取物和可浸物的探索

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-12-01 DOI: 10.56530/spectroscopy.sc1575j6

F. Adar

引用次数: 0

Colorimetric Discrimination of Pd2+ and Hg2+ Ions in Solvent and Solid-Film State Using Organic Acid-Assisted Green Synthesized Silver Nanoparticles 有机酸辅助绿色合成纳米银在溶剂和固膜状态下的比色鉴别Pd2+和Hg2+离子

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-12-01 DOI: 10.56530/spectroscopy.ag1869d9

Kaiyu Zhang, Yuxin Sang, Qinxing Sun, Weina Li

{"title":"Colorimetric Discrimination of Pd2+ and Hg2+ Ions in Solvent and Solid-Film State Using Organic Acid-Assisted Green Synthesized Silver Nanoparticles","authors":"Kaiyu Zhang, Yuxin Sang, Qinxing Sun, Weina Li","doi":"10.56530/spectroscopy.ag1869d9","DOIUrl":"https://doi.org/10.56530/spectroscopy.ag1869d9","url":null,"abstract":"In this study, a colorimetric discrimination of Pd2+ and Hg2+ ions in the solvent and solid film states in one silver nanoparticles (AgNPs) sensing system is presented. First, silver nanoparticles were prepared by reducing AgNO3 with sodium borohydride in the presence of chitosan and different organic acids, including acetic acid, propanedioic acid, and citric acid. The addition of different organic acids allowed for the surface plasmon resonance (SPR) intensity and size distribution of AgNPs to be adjusted. Chitosan acts as a stabilizer and complexing agent, endowing AgNPs excellent film-forming properties. Then, the chitosan-stabilized AgNPs in the solvent and solid-film state are used to detect metal ions. In the presence of Hg2+ and Pd2+ ions, the color of the AgNP solution changed rapidly from pale yellow to colorless and light brown, respectively. The characteristic SPR peaks of the AgNPs also disappeared completely, and the solid films of AgNPs with a yellowish-brown color also change rapidly to colorless and dark brown with the addition of Hg2+ and Pd2+ ions, respectively. The discrimination of Hg2+ and Pd2+ ions can be clearly observed in both the solvent and the solid film state. However, the addition of other metal ions cannot change the color of the AgNPs.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"27 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85430068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Survey of Basic Instrument Components Used in Spectroscopy, Part 4: Instrument Services and Testing 光谱学基本仪器部件综述，第4部分:仪器服务和测试

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-12-01 DOI: 10.56530/spectroscopy.nj6365j3

Jerry Workman

引用次数: 0

Infrared Spectroscopy of Polymers, IX: Pendant Ester Polymers and Polycarbonates 聚合物的红外光谱，IX:垂坠酯聚合物和聚碳酸酯

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-12-01 DOI: 10.56530/spectroscopy.xn9369p8

B. Smith

引用次数: 6

Spectrometers in Wonderland: Shrinking, Shrinking, Shrinking 仙境中的光谱仪:缩小，缩小，缩小

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.lz8466z5

Richard A. Crocombe

{"title":"Spectrometers in Wonderland: Shrinking, Shrinking, Shrinking","authors":"Richard A. Crocombe","doi":"10.56530/spectroscopy.lz8466z5","DOIUrl":"https://doi.org/10.56530/spectroscopy.lz8466z5","url":null,"abstract":"This article gives a brief overview of the major portable techniques: those based on optical spectroscopy techniques, including near-infrared (NIR), mid-infrared (mid-IR), and Raman spectroscopy; mass spectrometry (MS) systems, including high-pressure MS (HPMS), gas chromatography–MS (GC–MS), ion mobility spectrometry (IMS); elemental techniques, such as X-ray fluorescence (XRF) and laser-induced breakdown spectroscopy (LIBS); and emerging miniaturized techniques like nuclear magnetic resonance (NMR). The above are all “conventional” spectroscopic techniques and reduced to a rugged portable format, containing self-contained data systems. They provide specific and actionable information to their operators working with them outside the laboratory—in the field—and these instruments have well-defined value propositions. A recent development is the availability of low cost (<$100) multispectral sensors operating in the visible and NIR regions. This low cost enables the sensors to be embedded into consumer products, such as smart “white goods” appliances, personal care, fitness products, and even “wearables” products. In the future, miniature and portable spectrometers will be ubiquitous—outside the laboratory, and in your home and pocket.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"176 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73529167","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Spectral Sensing Using a Handheld NIR Module Based on a Fully Integrated Sensor Chip 基于全集成传感器芯片的手持近红外模块的光谱传感

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.yd5989g6

F. Ou, A. van Klinken, K. Hakkel, M. Petruzzella, Don M. J. van Elst, P. Sevo, Chenhui Li, F. Pagliano, R. V. van Veldhoven, A. Fiore

{"title":"Spectral Sensing Using a Handheld NIR Module Based on a Fully Integrated Sensor Chip","authors":"F. Ou, A. van Klinken, K. Hakkel, M. Petruzzella, Don M. J. van Elst, P. Sevo, Chenhui Li, F. Pagliano, R. V. van Veldhoven, A. Fiore","doi":"10.56530/spectroscopy.yd5989g6","DOIUrl":"https://doi.org/10.56530/spectroscopy.yd5989g6","url":null,"abstract":"Near-infrared (NIR) spectroscopy is widely used for the classification of materials and the quantification of their properties. Today, there is a high demand for extending the use of this technique to portable applications, and eventually, the integration with consumer appliances and smartphones. To reach this goal, the overall size of the NIR sensor, its production cost, robustness, and resistance to vibrations are of particular importance. This paper describes an approach to spectral sensing in the NIR (850–1700 nm) using a handheld sensor module based on a fully integrated multipixel detector array with a footprint of around 2×2 mm2. The capabilities of the spectral sensor module were recently evaluated in two application cases: Quantification of the fat percentage in raw milk and the classification of plastic types. Fat quantification was achieved with a root mean square error (RMSE) of prediction of 0.14% and classification of plastic types was achieved with a prediction accuracy on unknown samples of 100%. The results demonstrate the feasibility of the direct NIR sensing approach used by the integrated sensor, which has potential to be used in a variety of applications.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"20 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88056539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Using Handheld Raman Spectroscopy Equipped with Orbital Raster Technology for Field Detection of Cocaine and its Impurities in Fingernails 利用配备轨道光栅技术的手持式拉曼光谱现场检测指甲中的可卡因及其杂质

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.cs9787u9

Megan Wilson, D. Al-Jumeily, J. Birkett, Iftikhar Khan, Ismail Abbas, S. Assi

{"title":"Using Handheld Raman Spectroscopy Equipped with Orbital Raster Technology for Field Detection of Cocaine and its Impurities in Fingernails","authors":"Megan Wilson, D. Al-Jumeily, J. Birkett, Iftikhar Khan, Ismail Abbas, S. Assi","doi":"10.56530/spectroscopy.cs9787u9","DOIUrl":"https://doi.org/10.56530/spectroscopy.cs9787u9","url":null,"abstract":"Fingernails can accumulate drugs as a result of chronic exposure. This work employed Raman spectroscopy for detecting cocaine hydrochloride (HCl) and its impurities within fingernails, utilizing orbital raster scanning (ORS) technology, where the laser beam hits multiple positions within the sample. Doing so maintained sensitivity and ensured that more of each sample’s components were represented. Fingernails were spiked with powder and solution forms of cocaine HCl and its impurities, including benzocaine HCl, levamisole HCl, lidocaine HCl, and procaine HCl. The strong Raman scattering observed for these substances indicated a high drug accumulation in the fingernails. Key cocaine HCl bands were seen at 848, 874, and 898 cm-1 (C-C stretching-tropane ring), 1004 cm-1 (symmetric stretching-aromatic ring), 1278 cm-1 (C-N stretching), 1453 cm-1 (asymmetric CH3 deformation), and 1605 and 1712 cm-1 (C=C and C=O stretching). Principal components analysis (PCA) confirmed that 90% (nails spiked with drug powders) and 77.2% (nails spiked with drug solutions) were accounted for in the variance among the data. The findings showed that Raman spectroscopy identified the presence of cocaine HCl and its impurities within fingernails.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"4 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86943382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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