Analytical Sciences最新文献_第6页

Room-temperature mL-to-μL quantitative liquid concentration device for cyclone flow 用于旋流的室温毫升至微升定量液体浓缩装置。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-30 DOI: 10.1007/s44211-024-00654-z

Hidekatsu Tazawa, Kazuma Mawatari

{"title":"Room-temperature mL-to-μL quantitative liquid concentration device for cyclone flow","authors":"Hidekatsu Tazawa, Kazuma Mawatari","doi":"10.1007/s44211-024-00654-z","DOIUrl":"10.1007/s44211-024-00654-z","url":null,"abstract":"<div><p>Highly sensitive quantitative analysis of liquids is required in various fields. Analytical instruments and devices such as chromatography, spectroscopic analysis, DNA sequencers, immunoassay, mass spectrometry, and microfluidic devices are utilized for this purpose. Typically, the sample volume is at the milliliter scale, while the analysis volume is at the microliter scale. Consequently, most of the sample is discarded. Therefore, a universal volume interface is required to quantitatively concentrate samples from milliliter to microliter volume. This study introduces a liquid quantitative function to the cyclone concentration method using a millimeter-scale channel, which is highly suitable for controlling liquids at the microliter scale due to its high fluidic resistance against cyclone flow. This method enables the effective control of liquid concentration by cyclone flow. The optimum channel structure is investigated, and a 33-fold concentration of aqueous solutions is demonstrated. Finally, the concentration device is applied to measure molybdenum ions in a river.</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":"40 12","pages":"2175 - 2180"},"PeriodicalIF":1.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44211-024-00654-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142103626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exploring the synchronized effect of MWCNT/X-manganate (X-Cu, Zn) nanocomposite for the sensitive and selective electrochemical detection of Hg(II) and Pb(II) in water 探索 MWCNT/X-锰酸盐（X-铜、锌）纳米复合材料在灵敏和选择性电化学检测水中汞（II）和铅（II）方面的同步效应。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-30 DOI: 10.1007/s44211-024-00652-1

Xingpu Qi, Ping Liu, Fang Yao, Mengli Zhao, Xuanyu Shen, Zhengyun Wang

{"title":"Exploring the synchronized effect of MWCNT/X-manganate (X-Cu, Zn) nanocomposite for the sensitive and selective electrochemical detection of Hg(II) and Pb(II) in water","authors":"Xingpu Qi, Ping Liu, Fang Yao, Mengli Zhao, Xuanyu Shen, Zhengyun Wang","doi":"10.1007/s44211-024-00652-1","DOIUrl":"10.1007/s44211-024-00652-1","url":null,"abstract":"<div><p>The presence of heavy metal ions in the environment is a long-lasting problem that requires the simultaneous detection of Hg(II) and Pb(II) which is both vital and challenging. This present study examines a simplified and effective approach for synthesizing multi-walled carbon nanotube–copper manganese oxide (MWCNT–CuMn<sub>2</sub>O<sub>4</sub>) and multi-walled carbon nanotube–zinc manganese oxide (MWCNT–ZnMn<sub>2</sub>O<sub>4</sub>) nanocomposites for electrochemical detection of heavy metal ions. The nanocomposites MWCNT–CuMn<sub>2</sub>O<sub>4</sub> and MWCNT–ZnMn<sub>2</sub>O<sub>4</sub> exceptional electrochemical performance was evaluated using Square Wave Anodic Stripping Voltammetry (SWASV). The fabricated MWCNT–ZnMn<sub>2</sub>O<sub>4</sub> demonstrated lower values of Electrochemical Impedance Spectroscopy (EIS) with charge transfer resistance (<i>R</i><sub>ct</sub>) of approximately 34.13 Ω. Remarkably, the MWCNT–ZnMn<sub>2</sub>O<sub>4</sub> electrochemical sensor exhibited the widest linear ranges of 0.5–10 μM with sensitive detection limits (0.011 μM for Hg(II) and 0.014 μM for Pb(II)). Interestingly, the MWCNT–ZnMn<sub>2</sub>O<sub>4</sub> sensor showed excellent capability in detecting Hg(II) and Pb(II) in real water samples with a recovery percentage of 94.1% and 91.3%. Overall, the MWCNT–ZnMn<sub>2</sub>O<sub>4</sub> modified GCE showcased superior selectivity, sensitivity, reproducibility, stability, and repeatability.</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":"40 12","pages":"2147 - 2165"},"PeriodicalIF":1.8,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142103625","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

Recent technical development for on-site analysis 现场分析的最新技术发展。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-29 DOI: 10.1007/s44211-024-00628-1

Mao Fukuyama

引用次数: 0

Comparative study of machine-and deep-learning based classification algorithms for biomedical Raman spectroscopy (RS): case study of RS based pathogenic microbe identification 基于机器和深度学习的生物医学拉曼光谱（RS）分类算法比较研究：基于 RS 的病原微生物识别案例研究。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-29 DOI: 10.1007/s44211-024-00645-0

Sisi Guo, Ruoyu Zhang, Tao Wang, Jianfeng Wang

{"title":"Comparative study of machine-and deep-learning based classification algorithms for biomedical Raman spectroscopy (RS): case study of RS based pathogenic microbe identification","authors":"Sisi Guo, Ruoyu Zhang, Tao Wang, Jianfeng Wang","doi":"10.1007/s44211-024-00645-0","DOIUrl":"10.1007/s44211-024-00645-0","url":null,"abstract":"<div><p>One key aspect pushing the frontiers of biomedical RS is dedicated machine- or deep- learning (ML or DL) algorithms. Yet, systematic comparative study between ML and DL algorithms has not been conducted for biomedical RS, largely due to the limited availability of open-source and large Raman spectra dataset. Therefore we compared typical ML partial least square-discriminant analysis (PLS-DA) and DL one dimensional convolution neural network (1D-CNN) based pathogenic microbe identification on 12,000 Raman spectra from six species of microbe (i.e., <i>K. aerogenes (Klebsiella aerogenes)</i>, <i>C. albicans (Candida albicans)</i>, <i>C. glabrata (Candida glabrata)</i>, <i>Group A Strep.</i> (<i>Group A Streptococcus)</i>, <i>E. coli1 (Escherichia coli1)</i>, <i>E. coli2 (Escherichia coli2)</i>) when 100%, 75%, 50% and 25% of the 12,000 Raman spectra were retained. The total Raman dataset was analyzed with 80% split for training and 20% for testing. The 100% retained testing dataset accuracy, area under curve (AUC) of the receiver operating characteristic (ROC) curve were 95.25% and 0.997 for 1D-CNN, which are higher than those (89.42% and 0.979) of PLS-DA. Yet, PLS-DA outperforms 1D-CNN for 75%, 50% and 25% retained testing dataset. The resultant accuracies and AUCs demonstrated the performance reliance of PLS-DA and 1D-CNN on Raman spectra number. Besides, both loadings on the latent variables of PLS-DA and the saliency maps of 1D-CNN largely captured Raman peaks arising from DNA and proteins with comparable interpretability. The results of the current work indicated that both ML and DL algorithms should be explored for application-wise Raman spectra identification to select whichever with higher accuracies and AUCs.</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":"40 12","pages":"2101 - 2109"},"PeriodicalIF":1.8,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142103624","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

Aptamer regulated peroxidase-like activity of cobalt oxyhydroxide nanosheets for colorimetric detection of kanamycin 用于卡那霉素比色检测的氢氧化钴纳米薄片的过氧化物酶样活性受色素调节。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-28 DOI: 10.1007/s44211-024-00655-y

Shuyan Xiao, Jiafeng Wu, Mingqin Kang, Zhongping Dong

{"title":"Aptamer regulated peroxidase-like activity of cobalt oxyhydroxide nanosheets for colorimetric detection of kanamycin","authors":"Shuyan Xiao, Jiafeng Wu, Mingqin Kang, Zhongping Dong","doi":"10.1007/s44211-024-00655-y","DOIUrl":"10.1007/s44211-024-00655-y","url":null,"abstract":"<div><p>A straightforward label-free colorimetric aptasensor utilizing the aptamer-enhanced peroxidase-like activity of cobalt oxyhydroxide (CoOOH) nanosheets has been established for kanamycin detection. In the kanamycin-free state, aptamers adsorb onto the CoOOH surface through electrostatic forces, enhancing the peroxidase-like activity of CoOOH and thereby resulting in a strong absorption signal and a yellow hue in 3,3′,5,5′-tetramethylbenzidine (TMB) upon termination of the reaction with a stop solution. Conversely, upon the introduction of kanamycin, aptamers and CoOOH nanosheets compete for binding to kanamycin, resulting in a significant decrease in the number of aptamers bound to CoOOH. As a result, the activity of CoOOH diminishes, leading to a corresponding reduction in coloration and absorbance of the solution. Hence, the quantitative determination of kanamycin could be realized by analyzing the absorbance variations. Under optimal conditions, the aptasensor demonstrated high sensitivity and specificity, with a linear detection range from 500 nM to 5 µM and a detection limit as low as 54.6 nM. Moreover, the aptasensor effectively identified kanamycin in river water samples, achieving a recovery rate between 91.7% and 102.1%. This approach offers good practicability and provides a novel platform for kanamycin detection in environmental 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":"40 12","pages":"2181 - 2190"},"PeriodicalIF":1.8,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142078907","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

Removal of ceftriaxone and cefotaxime antibiotics from industrial wastewater via complexation with Cu(II) 通过与铜（II）络合去除工业废水中的头孢曲松和头孢噻肟抗生素。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-25 DOI: 10.1007/s44211-024-00632-5

Doaa A. Abdel-Kader, Adel M. Kamal Eldean, Mohamed M. Abd El-Wahab, Mohamed S. Galal, Elham Y. Hashem

{"title":"Removal of ceftriaxone and cefotaxime antibiotics from industrial wastewater via complexation with Cu(II)","authors":"Doaa A. Abdel-Kader, Adel M. Kamal Eldean, Mohamed M. Abd El-Wahab, Mohamed S. Galal, Elham Y. Hashem","doi":"10.1007/s44211-024-00632-5","DOIUrl":"10.1007/s44211-024-00632-5","url":null,"abstract":"<div><p>A high-performance liquid chromatographic method (HPLC) with UV detection is described for determination of ceftriaxone sodium (CFX) and cefotaxime sodium (CFM) content in pharmaceutical industrial wastewater. These methods are based on the detection of these antibiotics via the formation of chelate complexes with Cu(II). The developed Liquid Chromatographic method offers symmetric peak shape, good resolution and reasonable retention time for both drugs. The removal percentage reached about 100 and 92.1% at pH 7.2 for CFX and CFM, respectively. In UV detection, the removal of the chelating antibiotics were based on forming of chelate complexes with Cu(II) which detected at λ<sub>max<b> =</b></sub> 253 and 244 nm for CFX and CFM, respectively. Linearity, accuracy and precision were found to be acceptable over the concentration range of 5.99–59.86 µg mL<sup>−1</sup> for CFX and 14.33–71.63 µg mL<sup>−1</sup> for CFM. The proposed method can be used for the quality control of industrial wastewater containing CFX and CFM.</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":"40 11","pages":"1997 - 2004"},"PeriodicalIF":1.8,"publicationDate":"2024-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s44211-024-00632-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142054708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SERS detection of uranyl based on MOF-coated gold nanooctahedron hybrid 基于 MOF 涂层金纳米八面体杂化物的 SERS 检测铀酰。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-24 DOI: 10.1007/s44211-024-00646-z

Chao Yuan, Hongwei Ge, Benmei Cao, Suhua Wang

引用次数: 0

Correction: New stability indicating RP-HPLC methods for the determination of related substances and assay of trametinib acetic acid: a mass balance approach 更正：用于测定相关物质和检测曲美替尼乙酸的新型稳定性指示 RP-HPLC 方法：质量平衡法。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-21 DOI: 10.1007/s44211-024-00650-3

G. Himabindu, Y. Satyanarayana Reddy, A. V. S. S. Prasad, C. Ramadas, Hemant Kumar Sharma

引用次数: 0

Combination of on-line sample preconcentration by large-volume dual preconcentration by isotachophoresis and stacking (LDIS) with field-amplified sample injection (FASI) on Y-channel microchips 在 Y 型通道微芯片上将大容量异向电泳和堆积双重预浓缩（LDIS）在线样品预浓缩与现场放大样品进样（FASI）相结合。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-20 DOI: 10.1007/s44211-024-00647-y

Fumihiko Kitagawa, Sora Sato, Tomohiro Suzuki, Takayuki Kawai

{"title":"Combination of on-line sample preconcentration by large-volume dual preconcentration by isotachophoresis and stacking (LDIS) with field-amplified sample injection (FASI) on Y-channel microchips","authors":"Fumihiko Kitagawa, Sora Sato, Tomohiro Suzuki, Takayuki Kawai","doi":"10.1007/s44211-024-00647-y","DOIUrl":"10.1007/s44211-024-00647-y","url":null,"abstract":"<div><p>In our previous study, the combination of two on-line sample preconcentration techniques, large-volume sample stacking with an electroosmotic flow (EOF) pump (LVSEP) and transient isotachophoresis (tITP), in microchip electrophoresis (MCE) was developed, which was named large-volume dual preconcentration by isotachophoresis and stacking (LDIS). LDIS was apparently effective for improving the sensitivity and the peak shape. In LDIS, however, there was a limit to the improvement of the sensitivity enhancement factor (SEF) since the amount of analytes to be concentrated was limited to the channel volume. To overcome this issue, in the present article, LDIS was coupled with field-amplified sample injection (FASI) technique on Y-shaped channel microchips. The use of a Y-channel in LDIS-FASI allowed consecutive LVSEP, FASI and tITP enrichments with a simple voltage control. In conventional LVSEP and LDIS analyses of a standard analyte, the SEFs were evaluated to be 2630 and 13,100, respectively, whereas in LDIS-FASI that was increased to 27,900 even at the FASI injection time of 0 s. To achieve higher SEFs, furthermore, the FASI injection time was increased to 150 s, resulting in the best SEF of 58,500. It should be emphasized that the peak width in LDIS-FASI was quite narrow, only 0.3–3.1 s, while in normal LVSEP that was 13 s. Furthermore, the LDIS-FASI technique was applied to the analysis of oligosaccharide mixture. Due to the focusing effect by LDIS-FASI, the resolutions were improved from 0.97–1.57 to 2.08–2.73.</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":"40 12","pages":"2117 - 2124"},"PeriodicalIF":1.8,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142008096","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

Enzyme-aided amplification strategy for sensitive detection of methamphetamine based on fluorescence aptamer sensor 基于荧光适配体传感器灵敏检测甲基苯丙胺的酶辅助放大策略。

IF 1.8 4区化学

Analytical Sciences Pub Date : 2024-08-16 DOI: 10.1007/s44211-024-00648-x

Zheyu Wang, Yandan Wang, Yishuo Tong, Weifen Niu

{"title":"Enzyme-aided amplification strategy for sensitive detection of methamphetamine based on fluorescence aptamer sensor","authors":"Zheyu Wang, Yandan Wang, Yishuo Tong, Weifen Niu","doi":"10.1007/s44211-024-00648-x","DOIUrl":"10.1007/s44211-024-00648-x","url":null,"abstract":"<div><p>Methamphetamine (METH) abuse poses a serious risk to human health and social stability. It is critical to develop sensitive and selective methods for detecting METH. Here, we develop a fluorescence aptamer sensor to detect METH based on DNA exonuclease III (Exo III), graphene oxide (GO), and FAM-labeled aptamer. First, the sensor used GO’s strong binding capacity to adsorb and quench the fluorescence of the aptamer attached to GO surface. When METH was added to the system, the formation of stable complex for aptamer and METH dissociated from the surface of GO, leading to a fluorescence restoration. Then, the fluorescence signal was further amplified by using Exo III to liberate target METH for cyclic hybridization. And the gel electrophoresis experiment further verified the reliability of this strategy. This aptamer sensor exhibited a low detection limit (0.52 nM) and excellent selectivity under optimal conditions. Notably, this sensor has been successfully validated in the detection of METH in urine and saliva samples, exhibited commendable recovery (94.00–104.65%). Its benefits include facile, sensitive, and rapid. Expected to be used in practical METH detection.</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":"40 12","pages":"2125 - 2132"},"PeriodicalIF":1.8,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141987306","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