Spectroscopy最新文献_第7页

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

Rapid Determination of the Peroxide Value of Edible Oil by Handheld NIR Spectroscopy in Combination with Wavelength Variables Selection and PLS Calibration 结合波长变量选择和PLS校准的手持近红外光谱快速测定食用油的过氧化值

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.va1382h7

Ziniu Zhao, Hui Yan, H. Siesler

引用次数: 2

Real-World Application of Open-Path UV-DOAS, TDL, and FT-IR Spectroscopy for Air Quality Monitoring at Industrial Facilities 开放路径UV-DOAS, TDL和FT-IR光谱在工业设施空气质量监测中的实际应用

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.qz5173x6

S. Schill, R. S. McEwan, R. Moffet, J. Marrero, C. Macdonald, E. Winegar

{"title":"Real-World Application of Open-Path UV-DOAS, TDL, and FT-IR Spectroscopy for Air Quality Monitoring at Industrial Facilities","authors":"S. Schill, R. S. McEwan, R. Moffet, J. Marrero, C. Macdonald, E. Winegar","doi":"10.56530/spectroscopy.qz5173x6","DOIUrl":"https://doi.org/10.56530/spectroscopy.qz5173x6","url":null,"abstract":"Open-path spectroscopy is known for its ability to provide real-time measurements of dozens of compounds over sampling paths of up to 1000 meters in length. Advances in open-path monitoring technology and data processing techniques, coupled with new regulatory requirements, have greatly increased the acceptance and widespread application of spectroscopy-based open-path measurements. Large industrial facilities adjacent to residential communities are a particular application of interest, because traditional fixed-point analyzers lack the spatial coverage of the open-path instruments. This work discusses technical and practical considerations for the installation and operation of more than 120 open-path analyzers that are currently providing continuous data at several oil refineries in California. Open-path analyzers include ultraviolet differential optical absorbance spectroscopy (UV-DOAS), Fourier transform infrared (FT-IR), and tunable diode laser (TDL) technologies. We will discuss lessons learned from these projects, including fundamental approaches to compound identification, target species detectability, interferences, and data management.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"41 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78123730","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

An Archaeometric Investigation into the Former Cataract House Hotel via Elemental Analysis 原大瀑布饭店的元素分析考古调查

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-11-01 DOI: 10.56530/spectroscopy.sh9983a2

M. Jackson, Douglas J Perrelli, Jacob T. Shelley, M. K. Donais

{"title":"An Archaeometric Investigation into the Former Cataract House Hotel via Elemental Analysis","authors":"M. Jackson, Douglas J Perrelli, Jacob T. Shelley, M. K. Donais","doi":"10.56530/spectroscopy.sh9983a2","DOIUrl":"https://doi.org/10.56530/spectroscopy.sh9983a2","url":null,"abstract":"Over the course of the 19th century, the former Cataract House Hotel of Niagara Falls, New York, became one of the largest hotels in the region while also serving as an important “station” on the Underground Railroad. A park now occupies the area covering its demolished ruins. Since 2017, archaeological excavations of the site have taken place, led by the Anthropology Department at SUNY Buffalo. Although much is known about the overall design of the Cataract House Hotel, a clearer understanding of its construction phases, as well as its role in the Underground Railroad, could be determined from spectroscopic analysis in tandem with ongoing archaeological investigations. In 2022, in situ data collection was performed on plaster walls at the excavation site using a portable X-ray fluorescence (pXRF) instrument. These elemental data were used in conjunction with archaeological information to form conclusions regarding different construction phases of the hotel. Samples of plaster walls were also collected for further ex situ analyses with pXRF and portable laser-induced breakdown spectroscopy (pLIBS) in a laboratory setting. Future work will include data collection and analysis by additional spectroscopic methods of other artifacts collected at the site, such as pigment samples removed from an unearthed stone step.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"39 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75096105","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

Infrared Spectroscopy of Polymers, VIII: Polyesters and the Rule of Three 聚合物的红外光谱，VIII:聚酯和三法则

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-10-01 DOI: 10.56530/spectroscopy.ta9383e3

B. Smith

引用次数: 8

Decimal Versus Binary Representation of Numbers in Computers 计算机中数字的十进制表示与二进制表示

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-10-01 DOI: 10.56530/spectroscopy.mm1179p4

H. Mark, Jerry Workman

引用次数: 1

Kinetic Fluorimetric Determination of Formaldehyde by Oxidation of Rhodamine B with Potassium Bromate 溴酸钾氧化罗丹明B动力学荧光法测定甲醛

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-10-01 DOI: 10.56530/spectroscopy.gq3466f4

Wang Zhao-qun, S. Li, Han Feng, Zhang Xin, Li Hai-su, Su Bi-quan

引用次数: 0

Determination of Toxic Elements in Food by ICP-MS Using AOAC Method 2015.01 AOAC法ICP-MS测定食品中有毒元素

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-10-01 DOI: 10.56530/spectroscopy.zv7982s5

Liyan Xing

{"title":"Determination of Toxic Elements in Food by ICP-MS Using AOAC Method 2015.01","authors":"Liyan Xing","doi":"10.56530/spectroscopy.zv7982s5","DOIUrl":"https://doi.org/10.56530/spectroscopy.zv7982s5","url":null,"abstract":"Trace elements can be taken up by crops and animals from the air, water, soil, and food during growth, or introduced during food processing. Although some of these elements are essential macronutrients, others are toxic. Through food consumption, humans are exposed to toxic elements with the risk increasing proportionately to the amount consumed, which can have neurological-, endocrine-, and exocrine-disrupting properties, as well as being potentially genotoxic or carcinogenic. As a result, the contamination of food and water by toxic elements is of great concern because concentrations can be present at trace to ultra-trace levels, requiring sensitive and reliable analytical techniques for accurate measurement. Inductively coupled plasma mass spectrometry (ICP-MS) is a powerful elemental analysis technique with multi-element detection capabilities, low detection limits, high speed of analysis, and wide linear dynamic range. However, it is also susceptible to interfering species, leading to the formation of polyatomic and doubly charged ions. Here, we evaluate the performance characteristics of ICP-MS to carry out the validation procedures and QC requirements defined in AOAC Method 2015.01.","PeriodicalId":21957,"journal":{"name":"Spectroscopy","volume":"71 1","pages":""},"PeriodicalIF":0.5,"publicationDate":"2022-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79996645","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: 2

A Different Kind of Art Analysis 一种不同的艺术分析

IF 0.5 4区化学

Spectroscopy Pub Date : 2022-09-01 DOI: 10.56530/spectroscopy.he8774f8

T. Tague, G. Hall, Nigel Kelly

引用次数: 0