Analytical Sciences最新文献_第2页

Construction of all-solid-state ion-selective sensors using electrolyte-containing polymers. 利用含电解质聚合物构建全固态离子选择性传感器。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-17 DOI: 10.1007/s44211-024-00678-5

Hiroki Ohashi, Keisei Sowa, Yuki Kitazumi, Osamu Shirai

{"title":"Construction of all-solid-state ion-selective sensors using electrolyte-containing polymers.","authors":"Hiroki Ohashi, Keisei Sowa, Yuki Kitazumi, Osamu Shirai","doi":"10.1007/s44211-024-00678-5","DOIUrl":"https://doi.org/10.1007/s44211-024-00678-5","url":null,"abstract":"All-solid-state NO3-, K+, NH4+, Na+, and Ca2+ ion-selective sensors (ISEs) were prepared using polyvinyl butyral (S-LEC®K KX-5). In the present case, polyvinyl butyral was used as a porous material to keep the internal solution of the respective ISE. All sensors exhibited near-Nernst responses in the concentration region between approximately 10-5 and 0.1 mol dm-3. To avoid the influence of KCl as interfering ions, MgSO4 was used as an electrolyte within the salt bridge. Although the liquid junction potential was generated, the potential difference was stabilized within about few minutes. The NO3--ISE showed high stability with no potential drift during 12 h of continuous measurements and maintained high sensitivity even after 3 weeks of storage in ultrapure water. Solidification of the internal solution is expected to make the sensor smaller and increase its mechanical strength. As an actual measurement, the sodium concentration in plasma samples using the Na+-ISE was measured to confirm agreement with literature values.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142456257","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

Kinetic study on bimolecular photochemical quenching of tris(2,2'-bipyridyl)ruthenium(II) complex in water-ethylene glycol binary media. 水-乙二醇二元介质中三(2,2'-联吡啶)钌(II)复合物双分子光化学淬灭的动力学研究。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-17 DOI: 10.1007/s44211-024-00680-x

Yuki Hamano, Takuhiro Otsuka, Takeshi Higashiguchi, Nobuo Uehara, Arinori Inagawa

引用次数: 0

Aptasensor based on cascaded fluorescent sensor assisted by exonuclease III for ultra-sensitive detection of Hg². 基于外切酶 III 辅助级联荧光传感器的光传感器，用于超灵敏检测 Hg2。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-11 DOI: 10.1007/s44211-024-00677-6

Xing Liu, Zhen Liu, Yiliang Pan, Xilin Xiao

引用次数: 0

Characteristic volatile product analysis of moldy cigar wrapper and filler using gas chromatography-ion mobility spectrometry. 利用气相色谱-离子迁移谱法对发霉的雪茄茄衣和茄心进行特征性挥发物分析。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-07 DOI: 10.1007/s44211-024-00676-7

Min Wei, Yongli Wang, Yujing Shan, Lin Rong, Ling Zhu, Min Guo, Yong Pan, Yinyu Xiang

引用次数: 0

Fabrication of natural enzyme-covered / amino-modified Pd-Pt bimetallic-doped zeolitic imidazolate framework for ultrasensitive detection of metabolites. 用于代谢物超灵敏检测的天然酶覆盖/氨基修饰钯铂双金属掺杂唑咪唑框架的制备。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-03 DOI: 10.1007/s44211-024-00670-z

Chen-Chen Bai, Jin-Ye Lang, Xin-Yu Wang, Jia-Meng Zhao, Lin-Yi Dong, Jun-Jie Liu, Xian-Hua Wang

{"title":"Fabrication of natural enzyme-covered / amino-modified Pd-Pt bimetallic-doped zeolitic imidazolate framework for ultrasensitive detection of metabolites.","authors":"Chen-Chen Bai, Jin-Ye Lang, Xin-Yu Wang, Jia-Meng Zhao, Lin-Yi Dong, Jun-Jie Liu, Xian-Hua Wang","doi":"10.1007/s44211-024-00670-z","DOIUrl":"https://doi.org/10.1007/s44211-024-00670-z","url":null,"abstract":"The present article introduced an natural enzyme-covered/amino-modified Pd-Pt bimetallic-doped zeolitic imidazolate framework (NAPPZ) for ultrasensitive and specific detection of glucose. The dodecahedral nanomaterial zeolitic imidazolate framework (ZIF-8)-loaded Pd-Pt bimetallic nanoparticles endowed the composite with peroxidase-like activity. The modification with glucose oxidase (GOx) facilitated the rapid access of H2O2 produced through glucose oxidation to the Pd-Pt nanoparticles vicinity reducing diffusion. GOx specifically catalyzes the transformation of glucose into H2O2, which then H2O2 rapidly migrates to the Pd-Pt nanoparticles, catalyzing the oxidation of colorless o-phenylenediamine into the orange-yellow product 2,3-diaminophenazine. Based on the aforementioned cascade reaction, the NAPPZ and NAPPZ based on ChOx were utilized for detecting glucose in human urine samples and cholesterol in milk, respectively. The NAPPZ strategy presented a broad detection range (20-1100 μmol L-1) and a low detection limit (15.9 μmol L-1) for glucose, and the NAPPZ based on ChOx strategy approach offered a broad detection range (10-500 μmol L-1) and low detection limit (6.4 μmol L-1) for cholesterol. Therefore, this novel method holds significant potential in the areas of clinical diagnostics and food safety.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142370781","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

Dynamic extraction of residual solvents from pharmaceutical formulations using a needle-type extraction device. 使用针式萃取装置动态萃取药物制剂中的残留溶剂。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-09-28 DOI: 10.1007/s44211-024-00674-9

Ikuo Ueta, Daisuke Kondo, Suguru Masuda, Yuki Ariizumi, Ryosuke Kikuchi, Koki Nakagami, Yoshihiro Saito

{"title":"Dynamic extraction of residual solvents from pharmaceutical formulations using a needle-type extraction device.","authors":"Ikuo Ueta, Daisuke Kondo, Suguru Masuda, Yuki Ariizumi, Ryosuke Kikuchi, Koki Nakagami, Yoshihiro Saito","doi":"10.1007/s44211-024-00674-9","DOIUrl":"https://doi.org/10.1007/s44211-024-00674-9","url":null,"abstract":"This study developed a rapid screening method to determine residual solvents contained in a tablet formulation using a needle-type extraction device. For this, the tablet formulation was pulverized and the powdered sample was rapidly inserted into a pipette tip. After fixing the sample with quartz wool, the pipette tip was capped with a silicon septum. A needle-type extraction device packed with Carbopack X and a carbon molecular sieve was inserted into the pipette tip through the septum, and the gas sample was collected. During this gas sampling, pure N2 gas was introduced into the pipette tip. The extraction time for collecting 100 mL of the sample was approximately 10 min. After gas sampling, the extraction needle was connected to a gas-tight syringe and 0.5 mL of pure N2 gas (desorption gas) was collected. The extraction needle was then inserted into a heated gas chromatographic injection port. The extracted residual solvents were then thermally desorbed and determined using a gas chromatograph-flame ionization detector. The detector response is very low for carbon tetrachloride, although the proposed method showed sufficient sensitivity for five Class 1 compounds. Additionally, this study clearly indicated that the purge efficiency of residual solves with dynamic extraction is different between powdered pharmaceutical formulations.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339514","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

Analysis of methamphetamine in urine by GC/MS coupled with solid-phase dispersive extraction and solid-phase derivatization. 利用气相色谱/质谱结合固相分散萃取和固相衍生化技术分析尿液中的甲基苯丙胺。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-09-27 DOI: 10.1007/s44211-024-00675-8

Koichi Saito, Noriko Segawa, Rie Ito

{"title":"Analysis of methamphetamine in urine by GC/MS coupled with solid-phase dispersive extraction and solid-phase derivatization.","authors":"Koichi Saito, Noriko Segawa, Rie Ito","doi":"10.1007/s44211-024-00675-8","DOIUrl":"https://doi.org/10.1007/s44211-024-00675-8","url":null,"abstract":"In this study, we investigated a solid-phase dispersive extraction (SPDE) method and solid-phase derivatization method using the same solid-phase gel to extract methamphetamine (MA) from urine samples more efficiently and perform trifluoroacetic acid (TFA) derivatization for MA analysis by gas chromatography/mass spectrometry (GC/MS). N-Methylbenzylamine (NMe-BA) was added to the urine sample as a surrogate, and MA was extracted by SPDE using Oasis® HLB gel as a solid-phase agent. After drying the solid-phase gel of the SPDE, anhydrous TFA was added to the MA-absorbed HLB gel in order to derivatize MA with TFA on the solid-phase, followed by elution of the TFA derivative from this gel using ethyl acetate. As a validation of the analytical method, the limit of detection (S/N = 3) and the limit of quantification (S/N > 10) of MA were 0.002 µg/mL and 0.01 µg/mL, respectively. And the average recovery rate was 97.6-100.1%, repeatability was 5.6-10.7%, and intermediate precision was 10.1-11.4% for low (0.02 µg/mL), intermediate (0.1 µg/mL), and high (1 µg/mL) concentrations of MA added in urine. The developed pretreatment method enabled continuous extraction, cleanup, and TFA derivatization of urinary MA on the same solid-phase. Thus, urinary MA can be analyzed easily, rapidly, and with high sensitivity and accuracy.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142339513","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

Enhancing the sensitivity of immunoassays toward single-cell secretion analysis 提高单细胞分泌分析免疫测定的灵敏度。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-09-24 DOI: 10.1007/s44211-024-00651-2

Masato Suzuki

引用次数: 0

Preparation of a covalent organic framework-modified silica-gel composite for the effective adsorption of Pd(II), Zr(IV) and Mo(VI) from nitric acid solution. 制备共价有机框架修饰的二氧化硅凝胶复合材料，用于有效吸附硝酸溶液中的钯（II）、锆（IV）和钼（VI）。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-09-20 DOI: 10.1007/s44211-024-00666-9

Hao Wu, Naoki Osawa, Masahiko Kubota, Seong-Yun Kim

引用次数: 0

Ultrahigh-sensitivity vinyl-COF fluorescent sensor for trace organic arsenic detection. 用于痕量有机砷检测的超高灵敏度乙烯基-COF 荧光传感器。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-09-19 DOI: 10.1007/s44211-024-00671-y

Wenyang Li, Qiangrong Xie

{"title":"Ultrahigh-sensitivity vinyl-COF fluorescent sensor for trace organic arsenic detection.","authors":"Wenyang Li, Qiangrong Xie","doi":"10.1007/s44211-024-00671-y","DOIUrl":"https://doi.org/10.1007/s44211-024-00671-y","url":null,"abstract":"Recently, the misuse of organic arsenic feed additives, such as roxarsone (ROX), has increasingly jeopardized both human health and the environment. In response, a unique electron-rich pyrazine-cored fluorescent covalent organic framework (COF) nanosheet, named as COF-TMP, was synthesized using an alkali-catalyzed reaction between 2, 3, 5, 6-tetramethylpyrazine (TMP) and terephthalaldehyde (TPA). Characterization demonstrated that COF-TMP boasted high porosity, pronounced fluorescence, and an abundance of (E)-2-styrylpyrazine (SPA) groups. These attributes render it an exceptional fluorescent sensor for the ultrahigh sensitivity detection of electron-deficient ROX molecules. The limit of detection (LOD) for COF-TMP in detecting ROX was found to be 0.015 ppb through fluorescence-quenching titration experiments-surpassing all previously reported fluorescent sensors. A combination of experimental results and theoretical calculations suggests that the extraordinary detection capability of COF-TMP for ROX arises from a static quenching mechanism. This study paves the way not only for a novel pyrazine-based fluorescent COF nanosheet with high porosity, exceptional fluorescent capabilities, and abundant SPA groups suitable for highly sensitive and selective ROX detection but also hints at its potential application as a fluorescent sensor for environmental pollution management and related domains.","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":" ","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142279339","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