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Chemical Vapor Generation Non-Dispersive Atomic Fluorescence Spectrometry Technique for the Determination of Arsenic, Antimony, Selenium, and Mercury in Geological Samples by One-Time Digestion 化学气相发生非色散原子荧光光谱法一次性消化法测定地质样品中的砷、锑、硒和汞的技术
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-02-01 DOI: 10.56530/spectroscopy.ty8867r2
Wen-Zhi Zhao, Jiu-Fen Liu
{"title":"Chemical Vapor Generation Non-Dispersive Atomic Fluorescence Spectrometry Technique for the Determination of Arsenic, Antimony, Selenium, and Mercury in Geological Samples by One-Time Digestion","authors":"Wen-Zhi Zhao, Jiu-Fen Liu","doi":"10.56530/spectroscopy.ty8867r2","DOIUrl":"https://doi.org/10.56530/spectroscopy.ty8867r2","url":null,"abstract":"In this paper, a one-time digestion method for the determination of arsenic (As), antimony (Sb), selenium (Se), and mercury (Hg) in geological samples was established. The optimum digestion conditions were determined with aqua regia-hydrofluoric acid (HF)-H3BO3 as a complexing open system, and the contents of As, Sb, Se, and Hg in the same digestion solution were determined by chemical vapor generation non-dispersive atomic fluorescence spectrometry (CVG-AFS). For the determination of As, Sb, Se, and Hg, the method detection limits were 0.53 mg/kg, 0.047 mg/kg, 0.009 mg/kg, and 0.00047 mg/kg, respectively, Δ log C was -0.043–0.048, and the %RSD values were lower than 8.5%, performing with good accuracy and precision. This digestion method avoids the fractional processing of each element, simplifies the digestion steps, saves pretreatment time, and improves efficiency. The digestion method also showed wide applicability, high sensitivity, and low detection limits, and it can be used as a quick method for monitoring and controlling heavy metal pollution in large-scale geological samples.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466999","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
Simultaneous Determination of 50 Elements in Geochemical Samples by Low-Pressure Closed Digestion-ICP-MS 利用低压密闭消化-ICP-MS 法同时测定地球化学样品中的 50 种元素
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.tn6286y7
Jiahan Wang, Kai Tang, Wenguang Jiao, Dacheng Wang
{"title":"Simultaneous Determination of 50 Elements in Geochemical Samples by Low-Pressure Closed Digestion-ICP-MS","authors":"Jiahan Wang, Kai Tang, Wenguang Jiao, Dacheng Wang","doi":"10.56530/spectroscopy.tn6286y7","DOIUrl":"https://doi.org/10.56530/spectroscopy.tn6286y7","url":null,"abstract":"Geochemical samples were digested using polytetrafluoroethylene (PTFE) crucibles with screw caps followed by ICP-MS analysis of 50 elements. Two-point standard curves were plotted using blank solution and national standard reference GSD-9 for stream sediments, and the acid system, digestion conditions, isotopes, and internal standards for each element were optimized. The results showed that the detection limits for most elements were less than 0.2 μg/g, and the relative standard deviations for all elements ranged from 1.1% to 16.4%. The measured values were in agreement with the certified values of national standard references. This method not only significantly reduces the amount of acid used and avoids dust contamination, but also accurately determines some volatile elements. In addition, it has the advantages of easy operation and high pretreatment efficiency, making it very suitable for laboratories with large numbers of samples and multiple elements to be tested.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140523880","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
Honoring the Legacy of Ian Michael, the Long-Time Publisher of Spectroscopy Europe and Spectroscopy World 纪念《欧洲光谱学》和《光谱学世界》长期出版商伊恩-迈克尔的遗产
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.mc4881p9
Caroline Hroncich, Jerome Workman
{"title":"Honoring the Legacy of Ian Michael, the Long-Time Publisher of Spectroscopy Europe and Spectroscopy World","authors":"Caroline Hroncich, Jerome Workman","doi":"10.56530/spectroscopy.mc4881p9","DOIUrl":"https://doi.org/10.56530/spectroscopy.mc4881p9","url":null,"abstract":"In November, Spectroscopy announced the acquisition of Spectroscopy Europe and Spectroscopy World, two leading publications in the spectroscopy space. We remember Ian Michael, the long-time publisher of both magazines, for the contributions he made to the industry.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140517687","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
From Bakelite to Biodegradable: Practical Initiatives for Broadband Spectroscopy in Plastic Remediation and Replacement 从电木到生物降解：宽带光谱学在塑料修复和替代中的实用举措
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.qj9265q9
Derek Guenther
{"title":"From Bakelite to Biodegradable: Practical Initiatives for Broadband Spectroscopy in Plastic Remediation and Replacement","authors":"Derek Guenther","doi":"10.56530/spectroscopy.qj9265q9","DOIUrl":"https://doi.org/10.56530/spectroscopy.qj9265q9","url":null,"abstract":"In a world where plastic pollution can be seen out most windows, no article is needed to convey the global scope of the plastics problem. But this topic often becomes bifurcated into technological discussions without concrete implementations, or broad initiatives without a tether to the aforementioned technologies. Here we aim to fuse these two by connecting the capabilities of ultraviolet (UV), visible (VIS), near-infrared (IR), and Raman spectroscopies with practical, real-world initiatives being carried out at the corporate and social levels. Spectroscopy plays a critical role in both macroscopic and microscopic plastics detection, which is the first step in remediation, and also in the commercial replacement of plastics with biodegradable materials. This piece provides tangible examples of efforts being made today, including details on spectral hardware implementation, but more importantly provides proposals to the reader on how they can make a meaningful difference in their own world.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140522812","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
Inorganics II: The Spectra 无机物 II：光谱
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.gh3585q6
Brian C. Smith
{"title":"Inorganics II: The Spectra","authors":"Brian C. Smith","doi":"10.56530/spectroscopy.gh3585q6","DOIUrl":"https://doi.org/10.56530/spectroscopy.gh3585q6","url":null,"abstract":"Having defined inorganics and discussed the characteristics of their infrared spectra, we will begin a survey of the spectra of different inorganic functional groups. Included will be sulfates, carbonates, nitrates, silicates, and phosphates. Special attention will be paid to the stretching and bending vibrations of the polyatomic anions in these compounds.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140527313","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
The 2024 Emerging Leader in Atomic Spectroscopy Award 2024 年原子光谱学新锐领袖奖
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.rz8384l3
Jerome Workman
{"title":"The 2024 Emerging Leader in Atomic Spectroscopy Award","authors":"Jerome Workman","doi":"10.56530/spectroscopy.rz8384l3","DOIUrl":"https://doi.org/10.56530/spectroscopy.rz8384l3","url":null,"abstract":"This year’s Emerging Leader in Atomic Spectroscopy Award recipient is Eduardo Bolea-Fernández. For the past decade, Bolea-Fernández’s research has focused on the development of a newly introduced technique, termed tandem ICP-mass spectrometry (ICP-MS/MS), for ultra-trace elemental and isotopic analysis. He has also worked on the topic of high-precision isotopic analysis of mercury (Hg) using cold-vapor generation multi-collector ICP-MS instrumentation. His most recent work involves research in the context of single-event ICP-MS, a novel method of ICP-MS operation enabling the characterization of nanoparticles and individual cells. Moreover, he demonstrated for the first time ever that this approach can also be used for the characterization of microplastics by relying on their carbon content, a topic that is receiving significant attention.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140519821","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
Gary Hieftje: Pioneering Analytical Chemistry and Nurturing Future Scientists 加里-希夫杰开创分析化学和培养未来科学家的先河
IF 0.5 4区 化学
Spectroscopy Pub Date : 2024-01-01 DOI: 10.56530/spectroscopy.sa5582f1
Jerome Workman
{"title":"Gary Hieftje: Pioneering Analytical Chemistry and Nurturing Future Scientists","authors":"Jerome Workman","doi":"10.56530/spectroscopy.sa5582f1","DOIUrl":"https://doi.org/10.56530/spectroscopy.sa5582f1","url":null,"abstract":"Spectroscopy is publishing a series of feature articles highlighting the lives and careers of the most influential spectroscopists over the past 100 years. These individuals were selected by our Editorial Advisory Board and the editors to represent the leading figures in spectroscopy over the century. Our first featured Icons of Spectroscopy Laureate is Professor Gary Hieftje.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140523094","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
Hyperspectral Imaging Combined with Convolutional Neural Network for Rapid and Accurate Evaluation of Tilapia Fillet Freshness 高光谱成像与卷积神经网络相结合，快速准确地评估罗非鱼片的新鲜度
IF 0.5 4区 化学
Spectroscopy Pub Date : 2023-12-08 DOI: 10.56530/spectroscopy.ae4768d1
Shuqi Tang, Peng Li, Shenghui Chen, Chunhai Li, Ling Zhang, Nan Zhong
{"title":"Hyperspectral Imaging Combined with Convolutional Neural Network for Rapid and Accurate Evaluation of Tilapia Fillet Freshness","authors":"Shuqi Tang, Peng Li, Shenghui Chen, Chunhai Li, Ling Zhang, Nan Zhong","doi":"10.56530/spectroscopy.ae4768d1","DOIUrl":"https://doi.org/10.56530/spectroscopy.ae4768d1","url":null,"abstract":"The purpose of this work is to achieve rapid and nondestructive determination of tilapia fillets storage time associated with its freshness. Here, we investigated the potential of hyperspectral imaging (HSI) combined with a convolutional neural network (CNN) in the visible and near-infrared region (vis-NIR or VNIR, 397−1003 nm) and the shortwave near-infrared region (SWNIR or SWIR, 935−1720 nm) for determining tilapia fillets freshness. Hyperspectral images of 70 tilapia fillets stored at 4 ℃ for 0–14 d were collected. Various machine learning algorithms were employed to verify the effectiveness of CNN, including partial least-squares discriminant analysis (PLS-DA), K-nearest neighbor (KNN), support vector machine (SVM), and extreme learning machine (ELM). Their performance was compared from spectral preprocessing and feature extraction. The results showed that PLS-DA, KNN, SVM, and ELM require appropriate preprocessing methods and feature extraction to improve their accuracy, while CNN without the requirement of these complex processes achieved higher accuracy than the other algorithms. CNN achieved accuracy of 100% in the test set of VNIR, and achieved 87.30% in the test set of SWIR, indicating that VNIR HSI is more suitable for detection freshness of tilapia. Overall, HSI combined with CNN could be used to rapidly and accurately evaluating tilapia fillets freshness.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139011139","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
Raman Spectra Used to Understand the Origins of Banding in Spherulites 利用拉曼光谱了解球粒云母带状结构的起源
IF 0.5 4区 化学
Spectroscopy Pub Date : 2023-12-01 DOI: 10.56530/spectroscopy.wu2080k9
Fran Adar
{"title":"Raman Spectra Used to Understand the Origins of Banding in Spherulites","authors":"Fran Adar","doi":"10.56530/spectroscopy.wu2080k9","DOIUrl":"https://doi.org/10.56530/spectroscopy.wu2080k9","url":null,"abstract":"The formation of spherulites in polymers is a well-known phenomenon; when the polymer is crystallized by cooling from the melt, crystal lamellae grow out from a nucleation site in a spherical pattern. If the material is annealed on a planar surface, and viewed between crossed polarizers in a microscope, a Maltese cross with a banding pattern is observed. Where the crystals grow in a direction not parallel to the polarizers, the sample lights up. Often banding of the lit regions is observed, and is believed to be due to rotations of the crystal lamellae around the growth direction. Because it is well known that polarized Raman spectra respond to crystal orientation, we thought it would be interesting to try to document the relationship between the banding behavior and Raman polarization/orientation behavior. In this column I will show results of such an investigation of spherulites of poly(hydroxybutyate-co-hydroxyhexanoate) (PHBHx) with varying composition.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138620236","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
High-Resolution High-Speed LIBS Microscopy 高分辨率高速 LIBS 显微镜
IF 0.5 4区 化学
Spectroscopy Pub Date : 2023-12-01 DOI: 10.56530/spectroscopy.sr2771p7
A. Tercier, E. Vasileva, C. Alvarez-Llamas, C. Fabre, S. Hermelin, B. Soula, F. Trichard, C. Dujardin, V. Motto-Ros
{"title":"High-Resolution High-Speed LIBS Microscopy","authors":"A. Tercier, E. Vasileva, C. Alvarez-Llamas, C. Fabre, S. Hermelin, B. Soula, F. Trichard, C. Dujardin, V. Motto-Ros","doi":"10.56530/spectroscopy.sr2771p7","DOIUrl":"https://doi.org/10.56530/spectroscopy.sr2771p7","url":null,"abstract":"Laser-induced breakdown spectroscopy (LIBS) imaging instruments typically utilize lasers with repetition rates below 100 Hz since in most cases this regime provides a good balance of sampling frequency and laser pulse energy. However, measuring large sample areas of a several cm2 with high spatial resolution (<10 μm), at this frequency rate would be very time consuming since millions of spectral data points need to be collected in order to create a high-resolution image (3 h–15 h per cm2). In this work, we explore the approach to reduce, the acquisition time for high resolution LIBS imaging, or so-called μ-LIBS imaging, by using a laser operating in the kHz pulse repetition frequency (PRF) range. As a result, we describe and demonstrate a μ-LIBS imaging microscope which can image >6 cm2 sample areas with about 10 μm resolution in significantly shorter time (<20 min/cm2). The developed system opens a potential for variety of application fields where knowledge of elemental composition and elemental distribution is needed to perform conclusive analysis.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":null,"pages":null},"PeriodicalIF":0.5,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138611977","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
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