Analytical Sciences最新文献_第8页

pH monitoring in high ionic concentration environments: performance study of graphene-based sensors 高离子浓度环境中的 pH 值监测：石墨烯基传感器的性能研究。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-11-02 DOI: 10.1007/s44211-024-00682-9

Xin Qi, Wei Jin, Cao Tang, Xue Xiao, Rui Li, Yanqing Ma, Lei Ma

{"title":"pH monitoring in high ionic concentration environments: performance study of graphene-based sensors","authors":"Xin Qi, Wei Jin, Cao Tang, Xue Xiao, Rui Li, Yanqing Ma, Lei Ma","doi":"10.1007/s44211-024-00682-9","DOIUrl":"10.1007/s44211-024-00682-9","url":null,"abstract":"<div><p>Graphene-based pH sensors, acclaimed for their exceptional sensitivity to environmental variations, have garnered significant interest in scientific research. However, the sensor performance in high ionic concentration environments is limited, due to the Debye length ion screening effect. In this study, an innovative graphene channel pH sensing device was developed and modified by cross-linked poly(methyl methacrylate) (PMMA). Furthermore, even in high ionic concentrations, the pH value can be precisely measured by this sensor. The sensor has remarkable sensitivity, and high response rate of − 70.49 mV/pH within the pH range from 7 to 10. Notably, the sensors retain uniform response direction and sensitivity under different ionic concentrations environmental and maintain consistent reversibility and stability. This advancement in sensor technology paves the way for broader applications in complex ionic environments.</p><h3>Graphical abstract</h3><p>Left : A graphene-based pH sensor modified with a cross-linked PMMA film; Right : Sensitivity comparison of graphene-based sensors to pH under different electrolyte concentrations. This work presents a cross-linked PMMA film-modified graphene-based pH sensor that maintains high sensitivity even in high ionic strength environments.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 2","pages":"127 - 135"},"PeriodicalIF":1.8,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142563803","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

Ionic liquid applications in analytical chemistry 离子液体在分析化学中的应用。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-28 DOI: 10.1007/s44211-024-00668-7

Kenta Fujii

引用次数: 0

Correction: Effect of the alkyl chain length of α,ω‑dichloroalkane on the Gibbs energy of transfer for functional groups 更正：α,ω-二氯乙烷烷基链长度对官能团转移吉布斯能的影响。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-10-22 DOI: 10.1007/s44211-024-00669-6

Kohei Uematsu, Erina Tanaka, Takanari Tanaka, Hajime Katano

引用次数: 0

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":"10.1007/s44211-024-00678-5","url":null,"abstract":"<div><p>All-solid-state NO<sub>3</sub><sup>–</sup>, K<sup>+</sup>, NH<sub>4</sub><sup>+</sup>, Na<sup>+</sup>, and Ca<sup>2+</sup> 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<sup>–5</sup> and 0.1 mol dm<sup>–3</sup>. To avoid the influence of KCl as interfering ions, MgSO<sub>4</sub> 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 NO<sub>3</sub><sup>–</sup>-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<sup>+</sup>-ISE was measured to confirm agreement with literature values.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 1","pages":"71 - 78"},"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

{"title":"Kinetic study on bimolecular photochemical quenching of tris(2,2′-bipyridyl)ruthenium(II) complex in water–ethylene glycol binary media","authors":"Yuki Hamano, Takuhiro Otsuka, Takeshi Higashiguchi, Nobuo Uehara, Arinori Inagawa","doi":"10.1007/s44211-024-00680-x","DOIUrl":"10.1007/s44211-024-00680-x","url":null,"abstract":"<div><p>The bimolecular photochemical quenching of the tris(2,2′-bipyridyl)ruthenium (II) complex by ferricyanide ions in water–ethylene glycol binary media was investigated using a spectrophotometric approach, as previously reported by our research group. Time-resolved spectroscopy revealed that dynamic photochemical quenching occurred via a diffusion-dominated pathway. The static quenching process was found to occur significantly when the concentration of ethylene glycol was greater than 40 wt%. The analysis of the Stern–Volmer plots revealed that the emitters and quenchers tended to show ionic associations in water–ethylene glycol compared to our previous results with a water–glycerol binary solvent system. This is attributed to hydrophobicity, which is consistent with pioneering works that report that the addition of ethylene glycol to pure water forms hydrophobic regions, leading to dehydration of the complex ions.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 2","pages":"165 - 172"},"PeriodicalIF":1.8,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142456259","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

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

{"title":"Aptasensor based on cascaded fluorescent sensor assisted by exonuclease III for ultra-sensitive detection of Hg2+","authors":"Xing Liu, Zhen Liu, Yiliang Pan, Xilin Xiao","doi":"10.1007/s44211-024-00677-6","DOIUrl":"10.1007/s44211-024-00677-6","url":null,"abstract":"<div><p>Construct a sensitive and rapid detection fluorescence biosensor with the assistance of exonuclease III to achieve efficient detection of Hg<sup>2+</sup>. Nucleic acid aptamer H0 specifically recognizes Hg<sup>2+</sup>, and under the action of exonuclease III, H0 bound to Hg<sup>2+</sup> is hydrolyzed, which in turn fails to trigger the catalytic hairpin self-assembly amplification reaction, resulting in a decrease in the number of double-stranded DNA bound to the fluorescent dye SYBR Green I in the solution, and a decrease in the fluorescence intensity. The results showed that the concentration of Hg<sup>2+</sup> showed a good linear relationship with the fluorescence intensity of the sensing system within the range of 3.8–10 pmol/L, and the detection limit was 0.53 pmol/L. The recoveries of Xiangjiang River water used for the analysis of the actual samples were in the range of 99.57–103.58%, and the relative standard deviations of the determined values were 2.4–3.7%. The method is simple, sensitive, specific, cost-effective and can be applied to water samples.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 1","pages":"63 - 69"},"PeriodicalIF":1.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142399159","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

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":"10.1007/s44211-024-00670-z","url":null,"abstract":"<p>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 H<sub>2</sub>O<sub>2</sub> produced through glucose oxidation to the Pd–Pt nanoparticles vicinity reducing diffusion. GOx specifically catalyzes the transformation of glucose into H<sub>2</sub>O<sub>2</sub>, which then H<sub>2</sub>O<sub>2</sub> 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<sup>−1</sup>) and a low detection limit (15.9 μmol L<sup>−1</sup>) for glucose, and the NAPPZ based on ChOx strategy approach offered a broad detection range (10–500 μmol L<sup>−1</sup>) and low detection limit (6.4 μmol L<sup>−1</sup>) for cholesterol. Therefore, this novel method holds significant potential in the areas of clinical diagnostics and food safety.</p>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 1","pages":"23 - 34"},"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":"10.1007/s44211-024-00674-9","url":null,"abstract":"<div><p>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 N<sub>2</sub> 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 N<sub>2</sub> 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.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 1","pages":"79 - 83"},"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":"10.1007/s44211-024-00675-8","url":null,"abstract":"<div><p>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). <i>N</i>-Methylbenzylamine (NMe-BA) was added to the urine sample as a surrogate, and MA was extracted by SPDE using Oasis<sup>®</sup> 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 (<i>S/N</i> = 3) and the limit of quantification (<i>S/N</i> > 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.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7802,"journal":{"name":"Analytical Sciences","volume":"41 1","pages":"85 - 92"},"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