Journal of Applied Spectroscopy最新文献_第2页

Novel Green and QbD-Assisted UV Spectroscopic Method for Vanillic Acid Quantification in Bulk and Nanoformulation 新型绿色和qbd辅助紫外光谱法定量散装和纳米制剂中香草酸

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02163-5

A. A. Nagaprajwal, K. P. Sutar, A. M. Lad

{"title":"Novel Green and QbD-Assisted UV Spectroscopic Method for Vanillic Acid Quantification in Bulk and Nanoformulation","authors":"A. A. Nagaprajwal, K. P. Sutar, A. M. Lad","doi":"10.1007/s10812-026-02163-5","DOIUrl":"10.1007/s10812-026-02163-5","url":null,"abstract":"A green, stability-indicating UV-spectrophotometric method was developed and validated for the quantification of vanillic acid (VA) in bulk and niosomal formulations within a Quality by Design (QbD) framework. This method utilizes a phosphate buffer (pH 6.8) as an eco-friendly solvent, in accordance with the principles of green analytical chemistry. Key analytical variables, such as sonication time and scanning interval, were optimized using a Design of Experiments (DoE) approach to enhance precision and robustness. The optimized method exhibited a maximum absorbance at 251 nm with excellent linearity over a concentration range of 2–16 μg/mL (R2 = 0.999). Validation according to the ICH Q2(R1) guidelines demonstrated high accuracy (recoveries between 99.65–101.41%), precision (RSD < 2%), sensitivity (LOD = 0.229 μg/mL; LOQ = 0.694 μg/mL), and robustness under variable conditions. Forced degradation studies in acidic, basic, oxidative, and photolytic environments confirmed the stability of the method. The developed method was successfully applied to quantify VA-loaded niosomal formulations, yielding an entrapment efficiency of 82.76%. Greenness assessments (AGREE = 0.82; AGREEprep = 0.80) confirmed the sustainability of the method. Overall, this study establishes a novel, green, and QbD-driven analytical approach that offers reliability, regulatory compliance, and environmental responsibility for the routine quantification of VA in bulk and nanoformulations.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"93 4","pages":"898 - 907"},"PeriodicalIF":0.7,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125631","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

Selective Fluorescent Probe for Hydrogen Sulfide and its Application in Monitoring Food Freshness 硫化氢选择性荧光探针及其在食品新鲜度监测中的应用

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02169-z

Qiong Chen, Cheng-Hao Liu, Yang Li, Wen-Ling Wang, Yan-Li Chen

引用次数: 0

Laser-Induced Fluorescence in Cesium Atomic Vapors Caused by 456-nm Radiation 456 nm辐射下铯原子蒸汽的激光诱导荧光

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02145-7

A. Sargsyan

引用次数: 0

Development and Validation of a First Derivative UV-Visible Spectrophotometric Method for the Quantification of Tyramine in Fermented Foods with Greenness Evaluation 一阶导数紫外可见分光光度法测定发酵食品中酪胺含量及绿度评价的建立与验证

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02164-4

Charumathi Salva, Keerthika Akula, Bhavyasri Khagga

{"title":"Development and Validation of a First Derivative UV-Visible Spectrophotometric Method for the Quantification of Tyramine in Fermented Foods with Greenness Evaluation","authors":"Charumathi Salva, Keerthika Akula, Bhavyasri Khagga","doi":"10.1007/s10812-026-02164-4","DOIUrl":"10.1007/s10812-026-02164-4","url":null,"abstract":"A new UV-visible spectrophotometric method using the first derivative has been established for the selective measurement of tyramine in fermented food samples, successfully minimizing interference from histamine. This method has been validated following ICH Q2(R2) standards, showing excellent linearity between 10 and 18 μg/mL, with a limit of detection (LOD) at 0.401 μg/mL and a limit of quantification (LOQ) of 1.217 μg/mL, confirming its sensitivity and dependability for routine testing. An evaluation of the method's environmental impact using AGREE (0.66), BAGI (62.5), and MoGAPI (74) tools revealed a favorable level of greenness, particularly regarding energy efficiency, minimal sample preparation, and safe preservation, despite certain less eco-friendly elements associated with methanol and trichloroacetic acid due to their harmful nature. In conclusion, this method offers a simple, accurate, and reproducible way to measure tyramine in fermented foods, providing important insights into environmental performance and supporting sustainable practices in food analysis.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"93 4","pages":"908 - 917"},"PeriodicalIF":0.7,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125702","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

Influence of Active Layer and Cathode Thickness on the Efficiency of Semi-Transparent Organic Solar Cells 有源层和阴极厚度对半透明有机太阳能电池效率的影响

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02148-4

Sh. Saidkulova, F. Ruziyev, L. Nurumbetova, I. Boynazarov, J. Hu, S. Li, A. Saparbaev

引用次数: 0

Spectrophotometric Determination of Erbium(III) Ions with 3-[2-Hydroxy-3-Sulfo-5-Nitrophenylazo]Pentane-2,4-Dione 3-[2-羟基-3-亚砜-5-硝基苯基偶氮]戊烷-2,4-二酮分光光度法测定铒离子

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02146-6

Ch. A. Mammadova, G. R. Mugalova, F. S. Aliyeva, F.É. Huseynov, F. M. Chyragov

{"title":"Spectrophotometric Determination of Erbium(III) Ions with 3-[2-Hydroxy-3-Sulfo-5-Nitrophenylazo]Pentane-2,4-Dione","authors":"Ch. A. Mammadova, G. R. Mugalova, F. S. Aliyeva, F.É. Huseynov, F. M. Chyragov","doi":"10.1007/s10812-026-02146-6","DOIUrl":"10.1007/s10812-026-02146-6","url":null,"abstract":"A simple, rapid, sensitive, and economical spectrophotometric method is described for the determination of erbium(III) ions using 3-[2-hydroxy-3-sulfo-5-nitrophenylazo]pentane-2,4-dione (R) in the presence of cetyltrimethylammonium bromide (CTMABr) as a cationic surfactant. Optimal complexation conditions (λopt, pHopt) for homoleptic (Er(III)–R) and mixed-ligand complexes (Er(III)–R–CTMABr) were determined. The Er(III)–R complex exhibits maximum light absorption at 417 nm, while the Er(III)–R–CTMABr complex has maximum absorption at 426 nm. The molar extinction coefficient for the Er(III)–R complex is 0.92·104, while the corresponding value for Er(III)–R–CTMABr is 1.78·104. The optimal pH value for the complex formation of Er(III)–R is 8, while this value for Er(III)–R–CTMABr is 6. In the presence of CTMABr, the optical density of the complex is significantly enhanced, while the optical pH value for complex formation is shifted to the acidic region. The region of conformity to the Bouguer–Lambert–Beer law is linear in the erbium ion concentration range from 1.34 to 5.30 μg/mL for Er(III)–R and from 0.62 to 6.65 μg/mL for Er(III)–R–CTMABr. The stoichiometric ratio fo the components in the complexes was confirmed using the isomolar series method, Starik–Barbanel relative yield approach, and the equilibrium shift method. These methods confirmed the formation of complexes with component ratios Er(III):R = 1:2 and Er(III):R:CTMABr = 1:1:1. The effect of a series of extraneous ions on the formation of the Er(III) complexes was studied. The proposed method was used to determine trace amounts of Er(III) in volcanic rocks.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"93 4","pages":"761 - 766"},"PeriodicalIF":0.7,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125694","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

Features of Near-Surface Plasma Formation During Bichromatic Laser Impact on Yttrium Vanadate in Air 双色激光撞击空气中钒酸钇时近表面等离子体形成特征

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02150-w

N. A. Bosak, A. N. Chumakov, A. A. Ivanov, V. V. Kiris, A. A. Shevchenok, A. V. Buka

引用次数: 0

A CuS/Fe2TiO5 Heterojunction Photocatalyst for Highly Efficient Photocatalytic Degradation of Rhodamine B cu /Fe2TiO5异质结光催化剂对罗丹明B的高效光催化降解

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02162-6

Guowei Hu, Xiaohuan Wang, Zhipeng Yuan, You Guo, Congjie Yang

{"title":"A CuS/Fe2TiO5 Heterojunction Photocatalyst for Highly Efficient Photocatalytic Degradation of Rhodamine B","authors":"Guowei Hu, Xiaohuan Wang, Zhipeng Yuan, You Guo, Congjie Yang","doi":"10.1007/s10812-026-02162-6","DOIUrl":"10.1007/s10812-026-02162-6","url":null,"abstract":"Constructing heterojunctions is important for improving the photocatalytic performance of materials. In this study, porous Fe2TiO5 was prepared via a sol-gel method, and CuS was grown in situ on its surface through a hydrothermal process, thereby successfully synthesizing CuS/Fe2TiO5 heterojunction composites. The CuS/Fe2TiO5 composites were characterized via X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-visible diffuse reflectance spectroscopy (UV-Vis), and Brunauer–Emmett–Teller (BET) analysis. The results indicated that CuS is uniformly loaded on the surface of Fe2TiO5, with lattice spacings of 0.3550 and 0.2972 nm corresponding to CuS and Fe2TiO5, respectively, and no impurity phases were observed. Heterojunction construction induced distortion of the TiO6 octahedra at the interface, resulting in the emergence of a new absorption peak in the ultraviolet region. Among the samples, the 20 wt.% CuS/Fe2TiO5 (denoted as 20CuF2) composite exhibited a specific surface area (SBET = 6.17 m2/g) between those of CuS (SBET = 4.87 m2/g) and Fe2TiO5 (SBET = 7.71 m2/g). Its bandgap was tuned to 1.78 eV, and the photoluminescence intensity was significantly reduced. A CuS/Fe2TiO5 heterojunction composite was applied to facilitate the degradation of rhodamine B (RhB), achieving a degradation efficiency of 91.8%. The heterojunction catalysts developed in this study enable the effective degradation of pollutants in wastewater, providing a feasible technical reference for catalyst development and application.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"93 4","pages":"888 - 897"},"PeriodicalIF":0.7,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125625","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

Sub-Doppler Absorption Resonances Caused by Pumping of Atoms with Evanescent Radiation in Thin Gas Cells 稀薄气体电池中原子泵送与倏逝辐射引起的亚多普勒吸收共振

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02144-8

A. Ch. Izmailov

引用次数: 0

Spectroscopy of Moroccan Marbles and Ornamental Stones 摩洛哥大理石和观赏石的光谱学

IF 0.7 4区化学

Journal of Applied Spectroscopy Pub Date : 2026-09-05 DOI: 10.1007/s10812-026-02159-1

Salam Khrissi, Mustapha Haddad, Lahcen Bejjit, Saadia Ait Lyazidi, Mohamed El Amraoui, Houda Lifi, Christophe Falguères

{"title":"Spectroscopy of Moroccan Marbles and Ornamental Stones","authors":"Salam Khrissi, Mustapha Haddad, Lahcen Bejjit, Saadia Ait Lyazidi, Mohamed El Amraoui, Houda Lifi, Christophe Falguères","doi":"10.1007/s10812-026-02159-1","DOIUrl":"10.1007/s10812-026-02159-1","url":null,"abstract":"The physical characteristics of several series of marble samples taken from different regions of Morocco were experimentally determined. These characteristics include optical, elemental, and crystalline properties. The marbles and stones analyzed exhibited a variety of colors, including gray, white, black, yellow, and brown. For reference purposes, three white marble samples from Carrara, Italy; Drama; and Kozani, Greece were studied under the same conditions. A white marble sample from the 18th-century Moulay Ismail Mausoleum in Meknes was also studied under the same conditions. Using optical absorption spectroscopy, we identified bands attributed to ferrous and ferric ions (Fe2+ and Fe3+), which play a fundamental role in marble coloring. Other bands alongside long wavelengths were identified in accordance with crystalline and elemental studies and attributed to carbonates. Electron paramagnetic resonance (EPR) spectra revealed varying concentrations of Mn2+ ions in all the marbles studied. EPR lines attributed to Fe3+ ions distinguished ions resulting from Ca2+ substitution in the calcite lattice from those in iron oxides, clay minerals, and silicates. These identified ions are considered chromogenic elements responsible for the marbles' coloration.","PeriodicalId":609,"journal":{"name":"Journal of Applied Spectroscopy","volume":"93 4","pages":"863 - 871"},"PeriodicalIF":0.7,"publicationDate":"2026-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149125700","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