Analytical Sciences最新文献_第5页

Identification and structure elucidation by NMR spectroscopy of an impurity in flame retardants preparation. 阻燃剂制备中杂质的核磁共振鉴定和结构解析。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-10 DOI: 10.1007/s44211-025-00805-w

Domenico C M Albanese, Irene Gado, Francesca Vasile

{"title":"Identification and structure elucidation by NMR spectroscopy of an impurity in flame retardants preparation.","authors":"Domenico C M Albanese, Irene Gado, Francesca Vasile","doi":"10.1007/s44211-025-00805-w","DOIUrl":"https://doi.org/10.1007/s44211-025-00805-w","url":null,"abstract":"Polyamidoamines obtained through the polyaddition of natural alpha-aminoacids to N,N'-methylenebisacrylamide were shown to be remarkably active flame retardants for cotton. The presence of a disulfide linkage together with phosphorus atoms was previously chosen as desirable structural requirements and added to the polymer chain for their flame retardants properties. The conjugation of cystamine with diethyl vinyl phosphonate to obtain the desired monomer is accompanied by the formation of a by-product that must be identified and characterized to optimize the reaction. The ability of nuclear magnetic resonance to detect and quantify the components of a mixture in solution has become increasingly important in the analysis of manufacturing processes. Here, we have used NMR spectroscopy to identify and quantify an impurity in the synthesis of the precursor of a flame retardant without removing the main product from solution. 1D and 2D NMR spectra were used to obtain the identification and full characterization of the molecules and the by-product was identified through the analysis of different nuclei, such as 1H, 13C, 15N and 31P.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144265130","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

Development of photoenergy conversion systems and high-sensitivity sensing using metal nanoparticles. 利用金属纳米颗粒开发光能转换系统和高灵敏度传感。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-10 DOI: 10.1007/s44211-025-00796-8

Yukina Takahashi

引用次数: 0

Development of pine needle reference materials for atmospheric mercury biomonitoring. 大气汞生物监测用松针标准物质的研制。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-06 DOI: 10.1007/s44211-025-00802-z

Akane Yamakawa, Kimiyo Nagano, Kaoru Onishi, Miyuki Ukachi, Kozue Inamasu

{"title":"Development of pine needle reference materials for atmospheric mercury biomonitoring.","authors":"Akane Yamakawa, Kimiyo Nagano, Kaoru Onishi, Miyuki Ukachi, Kozue Inamasu","doi":"10.1007/s44211-025-00802-z","DOIUrl":"https://doi.org/10.1007/s44211-025-00802-z","url":null,"abstract":"Two reference materials (RMs) were developed at the National Institute for Environmental Studies (NIES) for biomonitoring atmospheric mercury (Hg). First-year pine needles (Pinus thunbergii), reflecting atmospheric conditions over approximately one year were collected from Nara and Ibaraki prefectures and designated as NIES RM No. 1001 Pine Needle I (PN I) and NIES RM No. 1002 Pine Needle II (PN II), respectively. After removing surface dust, the needles were oven-dried at 70 ℃, ground, homogenized, bottled, and sterilized using 60Co irradiation. Homogeneity and long-term stability tests were conducted for total Hg (THg) using cold-vapor atomic absorption spectrometry, confirming the material's suitability as RMs. The THg concentrations of PN I and PN II were 5.4 ± 0.4 ng/g and 22 ± 2 ng/g, respectively, lower than the NIST SRM 1575a Pine Needles (39.9 ± 0.7 ng/g). Given decreasing background levels of atmospheric Hg, precise measurement of low-concentration samples is increasingly important. Hg isotopic analysis was performed using a two-stage furnace or microwave-assisted digestion. Isotopic values for PN I were δ202Hg = -2.63 ± 0.24‰, Δ199Hg = -0.22 ± 0.17‰, Δ200Hg = -0.01 ± 0.10‰, and Δ201Hg = -0.19 ± 0.17‰ (2SD, n = 8), while those for PN II were δ202Hg = -1.64 ± 0.23‰, Δ199Hg = -0.51 ± 0.10‰, Δ200Hg = 0.00 ± 0.06‰, and Δ201Hg = -0.52 ± 0.13‰ (2SD, n = 12). Various trace element concentrations (Al, Ba, Ca, Cd, Cu, Fe, K, P, Rb, and Zn) were also measured. These candidate RMs are suitable for quality control in heavy metal and Hg isotope studies of foliage and similar matrices.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144245953","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

Molecular orientation analysis of perfluoroalkyl groups in the solid surface by backscattering Raman spectrometry. 固体表面全氟烷基分子取向的后向散射拉曼光谱分析。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-05 DOI: 10.1007/s44211-025-00797-7

Takafumi Shimoaka, Masashi Ootsuki, Yuta Yamaguchi, Nobutaka Shioya, Takeshi Hasegawa

{"title":"Molecular orientation analysis of perfluoroalkyl groups in the solid surface by backscattering Raman spectrometry.","authors":"Takafumi Shimoaka, Masashi Ootsuki, Yuta Yamaguchi, Nobutaka Shioya, Takeshi Hasegawa","doi":"10.1007/s44211-025-00797-7","DOIUrl":"https://doi.org/10.1007/s44211-025-00797-7","url":null,"abstract":"Recently, unique surface properties of poly- and perfluoroalkyl substances (PFAS) have been revealed to be derived from a two-dimensional (2D) packing of perfluoroalkyl (Rf) groups with perpendicularly standing orientation, i.e., the end-on orientation, which is revealed by the stratified dipole arrays (SDA) model. This indicates that analysis of the 2D aggregation of Rf groups is crucial for understanding the PFAS-specific properties, and analysis of the primary structure alone is insufficient. In the present study, we employ an analytical method of backscattering Raman spectrometry to explore the 2D aggregation of Rf groups in terms of molecular orientation. Measurements of solid particles of perfluoro-n-alkane with theoretical consideration of the Raman activity on backscattering optical arrangement make us find useful marker bands derived from the Rf groups. Analysis of the band enables us to determine the end-on orientation of the Rf chain about the surface of bulk PFAS: when the Rf chains are end-on oriented, the bands assigned to a specific symmetry species selectively disappear, whereas the other Raman-active bands remain. In short, the disappearance of the marker bands makes us determine the end-on orientation very easily. In addition, we demonstrate that the marker band can be used to visualize in-plane distribution of the end-on orientation by utilizing mapping measurements.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144232923","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

Detection scheme of arginine as aptamer target based on particle dissociation in coupled acoustic-gravitational field. 基于声重场耦合粒子解离的精氨酸适体靶检测方案。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-04 DOI: 10.1007/s44211-025-00798-6

Akihisa Miyagawa, Koki Nakano, Kengo Oshiyama, Shigenori Nagatomo, Kiyoharu Nakatani, Shoji Ishizaka

引用次数: 0

Therapeutic applications of nanobots and nanocarriers in cancer treatment. 纳米机器人和纳米载体在癌症治疗中的应用。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-04 DOI: 10.1007/s44211-025-00799-5

Zaitoon Khan, Nimra Khan, Mithra Geetha, Reyhanath Pilakka Veettil, Deepak Mahadev Kasote, Anwarul Hasan, Kishor Kumar Sadasivuni

{"title":"Therapeutic applications of nanobots and nanocarriers in cancer treatment.","authors":"Zaitoon Khan, Nimra Khan, Mithra Geetha, Reyhanath Pilakka Veettil, Deepak Mahadev Kasote, Anwarul Hasan, Kishor Kumar Sadasivuni","doi":"10.1007/s44211-025-00799-5","DOIUrl":"https://doi.org/10.1007/s44211-025-00799-5","url":null,"abstract":"Cancer remains a pressing global health concern, burdening individuals, families, and healthcare systems worldwide, mainly because of the limited availability of therapeutic options. These days, nanotechnology is revolutionizing cancer research by offering promising drug delivery systems. Among these, nanobots and nanocarriers are key nanotechnology components, offering groundbreaking strategies in cancer therapy by delivering drugs, enhancing diagnostics, and preventing diseases at molecular levels. Nanobots and nanocarriers, engineered at sizes ranging from 1 to 100 nm, demonstrate biocompatibility with cellular systems, offer precise drug delivery, and reduce side effects compared to conventional therapies such as chemotherapy and surgery. Research efforts now focus on transitioning nanobots and nanocarriers from laboratories to clinics, aiming for precision medicine, targeted drug delivery, enhanced therapy efficacy, and minimal side effects. This review aims to highlight the potential of nanobots and nanocarriers in cancer treatment and provide insights into their role in paving the way for clinical applications and improving outcomes in cancer therapy.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214701","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

A simple and cost-effective distance-based paper analytical device for phosphate ion determination. 一种简单、高性价比的远距离纸张分析装置，用于测定磷酸盐离子。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-02 DOI: 10.1007/s44211-025-00800-1

Sasitorn Ngamprasertsuk, Paweenar Duenchay, Wijitar Dungchai

{"title":"A simple and cost-effective distance-based paper analytical device for phosphate ion determination.","authors":"Sasitorn Ngamprasertsuk, Paweenar Duenchay, Wijitar Dungchai","doi":"10.1007/s44211-025-00800-1","DOIUrl":"https://doi.org/10.1007/s44211-025-00800-1","url":null,"abstract":"Phosphate ion (PO43-) monitoring in water sources is crucial due to its significant role in living systems and environmental impact, particularly in eutrophication. Conventional phosphate detection methods require sophisticated instruments and trained personnel. We report the development of a simple and cost-effective distance-based paper analytical device for phosphate ion detection. The device utilizes a complex of ferric ion (Fe3+), salicylic acid (SA), and polyethyleneimine (PEI) as the colorimetric indicator. Upon reaction with phosphate ions, Fe3+ forms a complex with phosphate, replacing the Fe3+-SA complex, leading to a visible color change from orange to colorless. The phosphate concentration is quantified by the distance of color change, which can be observed with the naked eye. Under the optimal conditions, the linearity was found in the range 5 to 75 mg/L (R2 = 0.9954), and the naked-eye detection limit was found at 2 mg/L. Furthermore, by applying a preconcentration method, the detection limit can be improved tenfold, achieving an LOD of 0.2 mg/L. Our proposed device for water sample application was also validated with the standard molybdenum blue method. A paired t-test was performed to compare the results obtained from both methods, and the statistical analysis indicated no significant difference between the two methods (p > 0.05). The method validation studies also showed acceptable performance, with spiked sample recoveries ranging from 85.05% to 117.97%, within the internationally recognized acceptable criteria of 80-120%. This method offers an alternative approach for accurate, rapid, on-site phosphate monitoring.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144198093","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

Correction: Recent advances in the development of ²²⁵Ac- and ²¹¹At-labeled radioligands for radiotheranostics. 更正：用于放射治疗的225Ac-和211at标记放射配体的最新进展。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-01 DOI: 10.1007/s44211-025-00763-3

Masayuki Munekane, Takeshi Fuchigami, Kazuma Ogawa

引用次数: 0

Biochar-based electrochemical sensors: a tailored approach to environmental monitoring. 基于生物炭的电化学传感器：一种适合环境监测的方法。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-01 Epub Date: 2025-02-18 DOI: 10.1007/s44211-025-00726-8

Alvin Lim Teik Zheng, Ellie Teo Yi Lih, Yiu Pang Hung, Supakorn Boonyuen, Syeed SaifulAzry Osman Al Edrus, Eric Lim Teik Chung, Yoshito Andou

{"title":"Biochar-based electrochemical sensors: a tailored approach to environmental monitoring.","authors":"Alvin Lim Teik Zheng, Ellie Teo Yi Lih, Yiu Pang Hung, Supakorn Boonyuen, Syeed SaifulAzry Osman Al Edrus, Eric Lim Teik Chung, Yoshito Andou","doi":"10.1007/s44211-025-00726-8","DOIUrl":"10.1007/s44211-025-00726-8","url":null,"abstract":"Biochar (BC), often obtained via thermochemical conversion methods of biomass, has emerged as a versatile material with significant potential in electrochemical sensing applications. This review critically examines the recent advancements in the development of BC-based sensors for the electrochemical determination of pharmaceuticals, pesticides, heavy metals, phenolic compounds, and microplastics. BC-based electrochemical sensors have emerged as a promising alternative due to their sustainability, cost-effectiveness, and excellent electrochemical properties. The unique physicochemical properties of BC, including its high surface area, porosity, and functional groups, contribute to its effectiveness as a sensor material. The review begins with an overview of the synthesis methods for BC, highlighting the activation strategies on its structural and electrochemical properties. Next, the functionalization of BC and its integration into electrochemical sensor platforms are explored. The performance of BC-based sensors is evaluated using electrochemical focusing on their sensitivity, selectivity, detection limits, and stability. Future directions for research are proposed, emphasizing the need for further optimization, miniaturization, and integration of BC-based sensors into portable and on-site analytical devices.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"715-735"},"PeriodicalIF":1.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143447691","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

Confocal micro-X-ray fluorescence and total reflection X-ray fluorescence analyses of Ryugu sample in a laboratory environment. 琉球样品的共聚焦微x射线荧光和全反射x射线荧光分析。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2025-06-01 Epub Date: 2025-04-14 DOI: 10.1007/s44211-025-00753-5

Tsugufumi Matsuyama, Sora Yasuda, Koen Janssens, Lee Wah Lim, Yoshio Takahashi, Kouichi Tsuji

{"title":"Confocal micro-X-ray fluorescence and total reflection X-ray fluorescence analyses of Ryugu sample in a laboratory environment.","authors":"Tsugufumi Matsuyama, Sora Yasuda, Koen Janssens, Lee Wah Lim, Yoshio Takahashi, Kouichi Tsuji","doi":"10.1007/s44211-025-00753-5","DOIUrl":"10.1007/s44211-025-00753-5","url":null,"abstract":"This study analyzed Ryugu samples utilizing confocal micro-X-ray fluorescence (CM-XRF) and total reflection X-ray fluorescence (TXRF), in which information of elemental mapping as well as the content of trace elements could be obtained separately, and respectively. In CM-XRF, polycapillary lenses are placed in front of the X-ray tube and detector, and elemental information in the overlapping region of both focus points was obtained. Three-dimensional elemental distributions could be obtained by scanning a sample; the Ryugu sample was placed on an Al plate with one center, and the images of Fe, Ni, Cr, and Ca were obtained. The outlines of these elements were almost equivalent; however, as the energy of Ca Kα was low, its intensity in the elemental mapping was weak. Non-destructive TXRF measurements were performed to measure the trace elements in the Ryugu sample. We then performed quantitative analysis and determined the concentrations of trace elements such as Ga, Ge, and Se. The concentrations of these elements are higher than those in the CI chondrites. Therefore, we verified that the 3D elemental distributions and quantitative measurements in the Ryugu sample were performed without destruction.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":"847-855"},"PeriodicalIF":1.8,"publicationDate":"2025-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143960800","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