Journal of Applied Spectroscopy最新文献_第9页

Spectral Data in Sr XIV, Ru XX, Rh XXI, and Pd XXII of Fusion Interest Sr XIV, Ru XX， Rh XXI和Pd XXII的光谱数据

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01920-2

Y. S. Tian

{"title":"Spectral Data in Sr XIV, Ru XX, Rh XXI, and Pd XXII of Fusion Interest","authors":"Y. S. Tian","doi":"10.1007/s10812-025-01920-2","DOIUrl":"10.1007/s10812-025-01920-2","url":null,"abstract":"A comprehensive computational study of the energy levels and lifetimes of the 64 states arising from the 3s23p63d7 and 3s23p53d8 configurations of Sr XIV, Ru XX, Rh XXI, and Pd XXII of fusion interest is carried out via the relativistic multiconfiguration Dirac–Hartree–Fock method followed by calculations that consider the correlations within the n = 8 complex, the Breit interaction, self-energy, and vacuum polarization corrections. Moreover, to display detailed information about the decay properties of these ions, the radiative transition wavelengths and emission transition probabilities of the electric dipole, electric quadrupole, magnetic dipole, and magnetic quadrupole transitions among the levels of the above configurations are given. The energy-level calculations are performed by taking the fully relativistic flexible atomic code as an independent check on the present values. Comparisons are made between the two datasets used here and previous experimental and computational work, and good agreement is found. The results reported here are useful for the identification of emission lines and in the field of fusion modeling, where experimental data are limited.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"356 - 362"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171403","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

Software Staining of Histological Tissue Sections Using the Luminescence Spectra of CdSe/ZnS Quantum Dots CdSe/ZnS量子点发光光谱对组织切片的软件染色

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01912-2

I. G. Motevich, A. V. Kapytski, V. N. Khilmanovich, N. D. Strekal, O. V. Shiman, S. A. Maskevich

{"title":"Software Staining of Histological Tissue Sections Using the Luminescence Spectra of CdSe/ZnS Quantum Dots","authors":"I. G. Motevich, A. V. Kapytski, V. N. Khilmanovich, N. D. Strekal, O. V. Shiman, S. A. Maskevich","doi":"10.1007/s10812-025-01912-2","DOIUrl":"10.1007/s10812-025-01912-2","url":null,"abstract":"Software processing of fluorescent images of histological sections of the cervix with different levels of pathology (squamous cell carcinoma vs. healthy epithelium) stained with CdSe/ZnS quantum dots (QD) is discussed. The shift of the luminescence band maximum of CdSe/ZnS quantum dots is a function of the electric field of the cell. Pathological changes in malignant tissues of squamous cell carcinoma of the cervix are accompanied by a shift of the luminescence band of CdSe/ZnS QD by 16 nm toward shorter wavelengths. Software processing of the fluorescent images allows us to attribute this shift to manifestation of the linear Stark effect. Comparison with the results obtained for aqueous solutions of CdSe/ZnS QDs shows that, in this case, the medium in the tissues with squamous cell carcinoma of the cervix is acidic. Healthy epithelial tissues when stained with CdSe/ZnS QDs give an optical response corresponding to neutral pH. The practical significance of these results lies both in the differentiation of tissues with malignant changes and visualization of the border between healthy epithelial tissue and squamous cell carcinoma of the cervix.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"298 - 301"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171689","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

Comparison of the Core and Tail Spectra of a Laser Plasma Plume for the Analysis of a Low-Alloy Steel Composition Using Partial Least Squares Regression 用偏最小二乘回归分析低合金钢成分的激光等离子体羽核和尾谱的比较

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01903-3

V. V. Kiris, K. Yu. Catsalap, M. V. Belkov

引用次数: 0

Simultaneous Quantification of Two Hypertensive Drugs by First-Order Derivative Spectroscopy: A Green Approach Via Agree and GAPI 一阶导数光谱同时定量两种高血压药物：通过Agree和GAPI的绿色方法

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01927-9

Jenish Parekh, Abhishek Munjapara, Hardik L. Varu, Subrata Patra, Hetal Jebaliya

{"title":"Simultaneous Quantification of Two Hypertensive Drugs by First-Order Derivative Spectroscopy: A Green Approach Via Agree and GAPI","authors":"Jenish Parekh, Abhishek Munjapara, Hardik L. Varu, Subrata Patra, Hetal Jebaliya","doi":"10.1007/s10812-025-01927-9","DOIUrl":"10.1007/s10812-025-01927-9","url":null,"abstract":"Valsartan and labetalol are the drugs that belong to the class of antihypertensive drugs, angiotensin II receptors. A simple, less time-consuming, cost-effective, and green first-order derivative approach is developed for the effective and simultaneous detection of valsartan and labetalol. The first-order approach is well known for the estimation of mixed drugs. The present method is validated as per the recommendations of the ICH guidelines (ICH Q2R1). Validation parameters include linearity that contains r2 values 0.9945 and 0.9967, respectively, for valsartan and labetalol. For the intraday and interday precision study, the assay value was found at 99.86 and 101.45%, and percentage recovery was achieved at 100.45 and 99.78%, respectively, for valsartan and labetalol. Based on the accuracy study the percentage recovery of valsartan was between 98.14 and 101.48%, and for labetalol, it was between 101.39 and 101.38%. The percentage recovery of robustness study found for valsartan and labetalol was between 98 and 102%. The limit of detection found for labetalol was 1.16 μg/mL and for valsartan it was 0.9 μg/mL. The quantification limit was achieved up to 3.52 and 2.72 μg/mL for valsartan and labetalol, respectively. Furthermore, the analytical greenness of the method was confirmed twice by utilizing the AGREE and GAPI greenness checker tools. Moreover, the method was applied to the estimation of the combined drug with the same medicinal applications in forensic science.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"417 - 425"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171686","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

System for Fluorescence Probing of Laser Plasma with High Spatial Resolution 高空间分辨率激光等离子体荧光探测系统

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01901-5

A. S. Zakuskin, T. A. Labutin

引用次数: 0

Development and Validation of a Bioanalytical Method for Estimation of Prucalopride in Human Plasma Using Liquid Chromatography–Tandem Mass Spectrometry 液相色谱-串联质谱法测定人血浆中普芦卡必利的生物分析方法的建立与验证

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01924-y

Padmabhushana Chary Vemuluri, Sireesha Dodda, Srinivasa Rao Polagani

{"title":"Development and Validation of a Bioanalytical Method for Estimation of Prucalopride in Human Plasma Using Liquid Chromatography–Tandem Mass Spectrometry","authors":"Padmabhushana Chary Vemuluri, Sireesha Dodda, Srinivasa Rao Polagani","doi":"10.1007/s10812-025-01924-y","DOIUrl":"10.1007/s10812-025-01924-y","url":null,"abstract":"A highly sensitive, rapid, and straightforward LC–MS/MS technique has been developed and meticulously validated for the detection of prucalopride in human plasma using prucalopride-13CD3 as an internal standard. The thorough validation process, conducted as per the US FDA guidelines, ensures the reliability and accuracy of our method. The analytes were extracted from human plasma via a liquid–liquid extraction technique using methyl tertiary butyl ether. The sample extract was separated on a Kromasil C18 column using a mixture of methanol and 5 mM ammonium formate in 0.1% formic acid (w/v) (80:20, v/v) as the mobile phase at a flow rate of 1.0 mL/min within a run time of 2.20 min. The eluents were quantified in positive ion mode by multiple reaction monitoring to observe the transitions from m/z 368.0 to 196.0 for prucalopride and from m/z 372.0 to 196.0 for the internal standard. The linearity of the method was established within the range 50–12,000 pg/mL, and the recoveries obtained were 89.92 and 90.42% for the analyte and internal standard respectively. The proposed method can be applied to quantify prucalopride during therapeutic drug monitoring and bioavailability/bioequivalence studies in humans.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"388 - 392"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171391","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

Dispersed and Optical Characteristics of Atmospheric Aerosols in the Boreal Forest Zone of Central Siberia According to Measurement Data of 2021–2022 基于2021-2022年测量数据的西伯利亚中部北方森林地区大气气溶胶的分散和光学特征

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01913-1

E. Yu. Nebosko, K. A. Shpak, T. I. Ryshkevich

{"title":"Dispersed and Optical Characteristics of Atmospheric Aerosols in the Boreal Forest Zone of Central Siberia According to Measurement Data of 2021–2022","authors":"E. Yu. Nebosko, K. A. Shpak, T. I. Ryshkevich","doi":"10.1007/s10812-025-01913-1","DOIUrl":"10.1007/s10812-025-01913-1","url":null,"abstract":"Results from an analysis of the dispersed and optical characteristics of atmospheric particles according to measurements at the background station of ZOTTO Tall Tower for the period 2021–2022 are presented. Seasonal particle size distributions and correlations with the total scattering coefficient for various aerosol modes are studied. The possibility of approximating the distributions by analytical functions is investigated. The best approximation corresponds to a lognormal distribution predominantly of a unimodal form. The features of the seasonal course are analyzed. The aerosol concentration has a maximum in the summer of 2021 and in the spring of 2022. The backward trajectories of the movement of air masses for the specified periods were analyzed using the HYSPLIT model. Industrial mining plants in the northern regions are sources of increased aerosol particle content. Atmospheric air coming from the eastern and southwestern directions is enriched with biomass combustion products resulting from forest fires and grass burning, respectively. It is shown that aerosol particles from different sources have their own characteristic scattering properties.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"302 - 308"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171687","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

Fast Tracking and Detection of Organic Matter in an Urban Sewage Treatment Plant Using Fluorescence Spectroscopy and UV-Vis Absorption Spectroscopy 利用荧光光谱和紫外-可见吸收光谱技术快速跟踪和检测城市污水处理厂中的有机物

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01925-x

Xiaowei Chen, Wanjiang Zhu, Nanjing Zhao, Gaofang Yin, Renqing Jia, Ruifang Yang, Mingjun Ma, Heng Qin, Jiawen Zheng

{"title":"Fast Tracking and Detection of Organic Matter in an Urban Sewage Treatment Plant Using Fluorescence Spectroscopy and UV-Vis Absorption Spectroscopy","authors":"Xiaowei Chen, Wanjiang Zhu, Nanjing Zhao, Gaofang Yin, Renqing Jia, Ruifang Yang, Mingjun Ma, Heng Qin, Jiawen Zheng","doi":"10.1007/s10812-025-01925-x","DOIUrl":"10.1007/s10812-025-01925-x","url":null,"abstract":"Organic matter distributions and concentrations at various stages of an urban wastewater treatment plant were analyzed via ultraviolet-visible (UV-Vis) absorption and three-dimensional fluorescence spectroscopy. Six components identified via the excitation–emission matrix and PARAFAC analysis revealed that components related to tryptophan (components 1, 3, and 6) correlated strongly with the chemical oxygen demand (COD) concentration, with Pearson correlation coefficients of 0.656, 0.447, and 0.674 respectively. Analysis of the fluorescence and UV-Vis absorption parameters revealed a reduction in the organic matter content, increased humification, and a shift from exogenous organic substances to endogenous organic substances throughout the sewage treatment process. Notably, the humification index had the highest correlation with the COD level (–0.834). Based on the use of Monte Carlo– uninformative variable elimination–partial least squares for characteristic wavelength extraction from normalized fluorescence and absorption spectra, a COD characteristic fusion spectral analysis model was developed. The results revealed good agreement between the COD concentrations obtained via feature fusion spectral analysis and the true COD values obtained via the potassium dichromate method. The coefficient of determination between the predicted COD values and the true COD values in the testing set reached 0.9725, the root mean square error was only 10.51 mg/L, and the residual predictive deviation was 4.74. These findings suggest the efficacy of using UV-Vis absorption and three-dimensional fluorescence spectroscopy for direct COD tracking and detection in wastewater treatment processes without any pretreatment.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"393 - 405"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170384","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

Novel Validated Approach for the Simultaneous Determination of Lobeglitazone Sulfate and Glimepiride in its Pure and Combined Dosage Form Using Tandem Quantification Methods by UV-Vis Spectroscopy 紫外可见光谱串联定量法同时测定硫酸洛贝列酮和格列美脲纯剂型和复方剂型的新方法

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01923-z

G. Megha, Sheeja Velayudhan Kutty, Y. Haribabu, Gokul J. Siddharth, C. P. Anupama, Jikhila Machado, V. Divya

{"title":"Novel Validated Approach for the Simultaneous Determination of Lobeglitazone Sulfate and Glimepiride in its Pure and Combined Dosage Form Using Tandem Quantification Methods by UV-Vis Spectroscopy","authors":"G. Megha, Sheeja Velayudhan Kutty, Y. Haribabu, Gokul J. Siddharth, C. P. Anupama, Jikhila Machado, V. Divya","doi":"10.1007/s10812-025-01923-z","DOIUrl":"10.1007/s10812-025-01923-z","url":null,"abstract":"Lobeglitazone sulfate and glimepiride are type 2 antidiabetic drugs in which lobeglitazone sulfate functions as an insulin sensitizer and glimepiride lowers blood sugar by causing the pancreas to produce insulin. This research article proposes a novel, simple, accurate, reproducible, and economical tandem method that can be used in the future for small-scale project analyses. Method A (absorption correction), in which the absorption maximum for lobeglitazone sulfate was 350 nm, also showed absorbance at 226 nm, which was found to be the absorption maximum for glimepiride, which shows zero absorbance at 350 nm. The techniques developed exhibited good linearity, ranging from 4 to 10.4 μg/mL for lobeglitazone sulfate and from 8 20.8 μg/mL for glimepiride, with excellent correlation coefficients (R2 = 0.999) for the two drugs. Method B (absorption ratio) explains the absorption ratio by selecting the maximum wavelength of one drug and one isosbestic point where both drugs show the same absorbance. The method developed showed good linearity, ranging from 0.8 to 7.2 μg/mL for lobeglitazone sulfate at 250 nm and 226 nm and from 1.6 to 14.4 μg/mL for glimepiride at 250 nm and 226 nm, with excellent correlation coefficients (R2 = 0.9987 for lobeglitazone sulfate at two wavelengths and R2 = 0.9987 for glimepiride). Both methods exhibited good linearity with excellent correlation coefficients. The intraday and interday accuracy and precision, with a low percentage relative standard deviation, demonstrated better recovery and reproducibility. A sensitivity test was performed by calculating the limit of detection and the limit of quantification.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"92 2","pages":"378 - 387"},"PeriodicalIF":1.0,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171401","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

Circular Dichroism Spectroscopy Study of the Spatial Structure of β-amyloid Peptide (25-35) in a Medium with Conditions Similar to the Membrane Environment β-淀粉样肽（25-35）在类似膜环境条件下空间结构的圆二色光谱研究

IF 1 4区化学

Journal of Applied Spectroscopy Pub Date : 2025-05-29 DOI: 10.1007/s10812-025-01911-3

G. A. Agaeva, G. Z. Najafova, A. Dj. Mammadova

引用次数: 0