Applied Spectroscopy最新文献_第10页

Non-destructive Analytical Study of Raman Spectra Variations and Mechanisms of Calcite and Aragonite in Modern and Fossilized Oysters. 现代和化石牡蛎中方解石和文石的拉曼光谱变化及机理的非破坏性分析研究

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-15 DOI: 10.1177/00037028241281386

Yaxuan Han, Yukihiro Ozaki, Motohiro Tsuboi

{"title":"Non-destructive Analytical Study of Raman Spectra Variations and Mechanisms of Calcite and Aragonite in Modern and Fossilized Oysters.","authors":"Yaxuan Han, Yukihiro Ozaki, Motohiro Tsuboi","doi":"10.1177/00037028241281386","DOIUrl":"https://doi.org/10.1177/00037028241281386","url":null,"abstract":"Oyster fossils are some of the most common bivalve mollusk fossils found all over the world, they are different from other fossils because the oyster is still alive in the present day, and the body structure of modern oyster is almost the same as that of ancient one. Therefore, we designed a control experiment comparing the Raman spectra of minerals from both modern oysters and fossil oysters to explore the mechanism of oyster's fossilization process, which is considered to be helpful for investigating biological evolution or paleoenvironment. The oyster fossil sample was found in Nagi-Cho, Okayama Prefecture, Japan. We focused on the variations of band position and full width half-maximum of ν1 Raman band (symmetric stretching mode) of calcite (CaCO3) from modern and fossil oysters and the mineral conversion between calcite and aragonite (CaCO3) around the adductor muscle inside the oyster. Compared to modern oysters, the ν1 band at around 1086 cm-1 of calcite from oyster fossils shifted to a high wavenumber region, and the possible reason for this phenomenon is considered an elemental substitution between Ca2+ and Mg2+. As for aragonite around adductor muscle in fossil oysters, it has been found by Raman spectra that most of the aragonite has been converted into calcite because calcite has a relatively more stable structure.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"37028241281386"},"PeriodicalIF":2.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142456781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Helium Detection in Natural Gas Using Raman Spectroscopy. 利用拉曼光谱检测天然气中的氦。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-09 DOI: 10.1177/00037028241282669

Aleksandr S Tanichev, Dmitry V Petrov

{"title":"Helium Detection in Natural Gas Using Raman Spectroscopy.","authors":"Aleksandr S Tanichev, Dmitry V Petrov","doi":"10.1177/00037028241282669","DOIUrl":"https://doi.org/10.1177/00037028241282669","url":null,"abstract":"Raman spectroscopy has great potential for quantitative analysis of natural gas. Helium is one of the components of natural gas and has a wide range of applications. It was believed that noble gases could not be detected using this technique due to the absence of their vibrational spectra. In this study, we demonstrated an approach to extracting the content of helium from the Raman spectrum of methane and carried out test measurements for the first time. The approach is based on the determination of changes in the ν1 band of methane caused by the influence of helium and other components. The necessary spectroscopic parameters characterizing the effect of methane (CH4), helium (He), nitrogen (N2), carbon dioxide (CO2), and ethane (C2H6) on the ν1 band of methane at a resolution of 0.35 cm-1 were obtained. The validation of the approach showed that the helium content in natural gas can be measured with an uncertainty of 1 mol% at a sample pressure of 50 bar. The measurement precision can be increased to 0.01 mol% by using a high-resolution spectrometer. The described method does not claim to replace helium detectors, but it can be considered a valuable addition to Raman gas analysis of natural gas in developing an all-in-one device. The possibilities for further improvement of the approach are also discussed.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"37028241282669"},"PeriodicalIF":2.2,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142387450","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Combining Infrared Refraction and Attenuated Total Reflection Spectroscopy. 结合红外折射和衰减全反射光谱学。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-07 DOI: 10.1177/00037028241283050

Thomas G Mayerhöfer, William D P Costa, Jürgen Popp

引用次数: 0

Spectral Background Calibration of Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) Spectrometer Onboard the Perseverance Rover Enables Identification of a Ubiquitous Martian Spectral Component. 毅力号漫游者上的有机物和化学物质拉曼及发光扫描宜居环境（SHERLOC）光谱仪的光谱背景校准，确定了一种普遍存在的火星光谱成分。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-03 DOI: 10.1177/00037028241280081

Ryan S Jakubek, Andrea Corpolongo, Rohit Bhartia, Richard V Morris, Kyle Uckert, Sanford A Asher, Aaron S Burton, Marc D Fries, Kevin Hand, William F Hug, Carina Lee, Francis M McCubbin, Eva L Scheller, Sunanda Sharma, Sandra Siljeström, Andrew Steele

{"title":"Spectral Background Calibration of Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) Spectrometer Onboard the Perseverance Rover Enables Identification of a Ubiquitous Martian Spectral Component.","authors":"Ryan S Jakubek, Andrea Corpolongo, Rohit Bhartia, Richard V Morris, Kyle Uckert, Sanford A Asher, Aaron S Burton, Marc D Fries, Kevin Hand, William F Hug, Carina Lee, Francis M McCubbin, Eva L Scheller, Sunanda Sharma, Sandra Siljeström, Andrew Steele","doi":"10.1177/00037028241280081","DOIUrl":"https://doi.org/10.1177/00037028241280081","url":null,"abstract":"The Perseverance rover landed at Jezero crater, Mars, on 18 February 2021, with a payload of scientific instruments to examine Mars' past habitability, look for signs of past life, and process samples for future return to Earth. The instrument payload includes the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) deep ultraviolet Raman and fluorescence imaging spectrometer designed to detect, characterize, and map the presence of organics and minerals on the Martian surface. Operation and engineering constraints sometimes result in the acquisition of spectra with features near the detection limit. It is therefore important to separate instrumental (background) spectral components and spectral components inherent to Martian surface materials. For SHERLOC, the instrumental background is assessed by collecting spectra in the stowed-arm configuration where the instrument is pointed at the Martian nighttime sky with no surface sample present in its optical path. These measurements reveal weak Raman and fluorescence background spectral signatures as well as charged-coupled device pixels prone to erroneous intensity spikes separate from cosmic rays. We quantitatively describe these features and provide a subtraction procedure to remove the spectral background from surface spectra. By identifying and accounting for the SHERLOC Raman background features within the median Raman spectra of Martian target scans, we find that the undefined silicate spectral feature interpreted to be either amorphous silicate or plagioclase feldspar is ubiquitously found in every Mars target Raman scan collected through Sol 751.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"37028241280081"},"PeriodicalIF":2.2,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142364203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Standoff Identification of Plastic Waste Using a Low-Cost Compact Laser-Induced Breakdown Spectroscopy (LIBS) Detection System. 快递：使用低成本紧凑型激光诱导击穿光谱 LIBS 检测系统对塑料垃圾进行对峙识别。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 Epub Date: 2024-08-09 DOI: 10.1177/00037028241268348

Rajendhar Junjuri, Arun Prakash Gummadi, Manoj Kumar Gundawar

{"title":"Standoff Identification of Plastic Waste Using a Low-Cost Compact Laser-Induced Breakdown Spectroscopy (LIBS) Detection System.","authors":"Rajendhar Junjuri, Arun Prakash Gummadi, Manoj Kumar Gundawar","doi":"10.1177/00037028241268348","DOIUrl":"10.1177/00037028241268348","url":null,"abstract":"We report the standoff/remote identification of post-consumer plastic waste by utilizing a low-cost and compact standoff laser-induced breakdown spectroscopy (ST-LIBS) detection system. A single plano-convex lens is used for collecting the optical emissions from the plasma at a standoff distance of 6.5 m. A compact non-gated Czerny-Turner charge-coupled device (CCD) spectrometer (CT-CCD) is utilized to analyze the optical response. The single lens and CT-CCD combination not only reduces the cost of the detection system by tenfold, but also decreases the collection system size and weight compared to heavy telescopic-based intensified CCD systems. All the samples investigated in this study were collected from a local recycling plant. All the measurements were performed with only a single laser shot which enables rapid identification while probing a large number of samples in real time. Furthermore, principal component analysis has shown excellent separation among the samples and an artificial neural network analysis has revealed that plastic waste can be identified within ∼10 ms only (testing time) with accuracies up to ∼99%. Finally, these results have the potential to build a compact and low-cost ST-LIBS detection system for the rapid identification of plastic waste for real-time waste management applications.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"1089-1097"},"PeriodicalIF":2.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Subsurface Spectroscopy of Thermal Degradation Inside an Inert Plastic Bonded Explosive (PBX) Simulant Using Feedback-Assisted Wavefront Shaping. 利用反馈辅助波前整形技术对惰性塑料粘合炸药 (PBX) 模拟物内部的热降解进行表层下光谱分析。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 Epub Date: 2024-08-02 DOI: 10.1177/00037028241267921

Benjamin R Anderson, Natalie Gese, Hergen Eilers

引用次数: 0

Peculiarities of the Dynamical Hydration Shell of Native Conformation Protein Using a Bovine Serum Albumin Example. 以牛血清白蛋白为例说明原生构象蛋白质动态水合壳的特殊性。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 Epub Date: 2024-06-17 DOI: 10.1177/00037028241261097

Nikita V Penkov

{"title":"Peculiarities of the Dynamical Hydration Shell of Native Conformation Protein Using a Bovine Serum Albumin Example.","authors":"Nikita V Penkov","doi":"10.1177/00037028241261097","DOIUrl":"10.1177/00037028241261097","url":null,"abstract":"This paper describes an approach based on the method of terahertz time-domain spectroscopy, which allows the analysis of dynamical hydration shells of proteins with a thickness of 1-2 nm. Using the example of bovine serum albumin in three conformations, it is shown that the hydration shells of the protein are characterized by increased binding of water molecules in the primary hydration layers, and in more distant areas of hydration, on the contrary, the water structure is somewhat destroyed. The fraction of free or weakly bound molecules, usually observed in the structure of liquid water in hydration shells, become more numerous but its average binding is greater than in undisturbed water. The energy distribution of hydrogen bonds in hydration shells is narrowed compared to undisturbed water. All these manifestations of hydration are most pronounced for the native conformation of the protein. Also, the hydration shells of the native protein are characterized by a smaller number of hydrogen bonds and a tendency to decrease their average energy compared to non-native conformations. The fact of a pronounced peculiarity of the hydration shells of the protein in the native conformation has been noted for different proteins before. However, the methodological approach used in this work for the first time allowed this peculiarity to be described by specific parameters of the intermolecular structure and dynamics of water.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"1051-1061"},"PeriodicalIF":2.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141330324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Feasibility of a Fiber-Dispersive Raman Spectrometer for Biomarker Detection. EXPRESS：用于生物标记检测的光纤色散拉曼光谱仪的可行性。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 Epub Date: 2024-08-18 DOI: 10.1177/00037028241267892

Mariia Sidorova, Sergey G Pavlov, Ute Böttger, Mickael Baqué, Alexei D Semenov, Heinz-Wilhelm Hübers

{"title":"Feasibility of a Fiber-Dispersive Raman Spectrometer for Biomarker Detection.","authors":"Mariia Sidorova, Sergey G Pavlov, Ute Böttger, Mickael Baqué, Alexei D Semenov, Heinz-Wilhelm Hübers","doi":"10.1177/00037028241267892","DOIUrl":"10.1177/00037028241267892","url":null,"abstract":"Raman spectroscopy is among the top analytical techniques for ultra-low-dense organic matter, crucial to the search for life and analysis of celestial body surfaces in space exploration missions. Achieving the ultimate sensitivity of in-situ Raman spectroscopy necessitates a breakthrough in detecting inelastically scattered light. Single-photon detectors (SPDs) operating in photon counting mode, which can differentiate between Raman and luminescence responses, are promising candidates for the challenging scientific requirements. Since large SPD arrays are not yet commercially available, a dispersive element can be adapted to a single-pixel detector. By exploiting chromatic dispersion in optical fibers and picosecond-pulsed excitation, we delay the arrivals of different spectral components onto a single-pixel SPD. This method also separates weak Raman signals from stronger luminescence through correlated time-domain measurements. We study the impact of fiber properties and the excitation wavelength of a pulsed laser on the spectral resolution of the fiber-dispersive Raman spectrometer (FDRS). Additionally, we demonstrate the FDRS's potential for studying biomarkers and discuss its feasibility for analyzing inclusions in ice matrices.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"1098-1104"},"PeriodicalIF":2.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11492548/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Half-Inch Monolithic Spatial Heterodyne Raman Spectrometer: A Study of Polarized Raman Spectra of Organic Liquids and Instrumental Performance. 半英寸单片空间异频拉曼光谱仪：有机液体偏振拉曼光谱和仪器性能研究。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 Epub Date: 2024-06-10 DOI: 10.1177/00037028241257961

Evan M Kelly, Miles J Egan, Arelis Colόn, S Michael Angel, Shiv K Sharma

{"title":"Half-Inch Monolithic Spatial Heterodyne Raman Spectrometer: A Study of Polarized Raman Spectra of Organic Liquids and Instrumental Performance.","authors":"Evan M Kelly, Miles J Egan, Arelis Colόn, S Michael Angel, Shiv K Sharma","doi":"10.1177/00037028241257961","DOIUrl":"10.1177/00037028241257961","url":null,"abstract":"Raman spectroscopy allows for the unambiguous identification of materials through the inelastic scattering of light. This technique has a great many uses in various aspects of society from academic, scientific, and industry. This paper explores a specific type of Raman spectrometer called a spatial heterodyne Raman spectrometer (SHRSy), which is a variation of an interferometric spectrometer. It utilizes a Michelson interferometer and replaces the mirrors with gratings that transform it from a time-domain spectrometer to a spatial-domain spectrometer, allowing for the entirety of the spectrum to be captured at once. This study specifically tests a half-inch two-grating monolithic SHRS (½-in. 2g-mSHRS), which has a weight of <60 g and a size of 2.2 × 2.2 × 1.3 cm. To do this we excite a variety of organic liquids with a 532 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) pulsed laser, using an excitation energy of 6.5 mJ/pulse and distance of 3 m in conjunction with an intensified charge-coupled device camera. This is the first time that the SHRS has been used for investigating polarized Raman spectra of liquids. We discuss and contrast the instrumental properties such as resolution, spectral range, étendue, and field of view with previously tested mSHRS to give context to the instrument's performance.","PeriodicalId":8253,"journal":{"name":"Applied Spectroscopy","volume":" ","pages":"1062-1070"},"PeriodicalIF":2.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141295471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Advertising and Front Matter. 广告和封面。

IF 2.2 3区化学

Applied Spectroscopy Pub Date : 2024-10-01 DOI: 10.1177/00037028241292113

引用次数: 0