ACS Measurement Science Au最新文献

{"title":"Correction to \"Electrochemical Impedance Spectroscopy-A Tutorial\".","authors":"Alexandros Ch Lazanas, Mamas I Prodromidis","doi":"10.1021/acsmeasuresciau.5c00007","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.5c00007","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.1021/acsmeasuresciau.2c00070.].</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"156"},"PeriodicalIF":4.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11848951/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143493830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction to “Electrochemical Impedance Spectroscopy─A Tutorial”","authors":"Alexandros Ch. Lazanas,&nbsp; and ,&nbsp;Mamas I. Prodromidis*,&nbsp;","doi":"10.1021/acsmeasuresciau.5c0000710.1021/acsmeasuresciau.5c00007","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.5c00007https://doi.org/10.1021/acsmeasuresciau.5c00007","url":null,"abstract":"","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"156 156"},"PeriodicalIF":4.6,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmeasuresciau.5c00007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Economical and Efficient Helium Recovery System for Vibration-Sensitive Applications","authors":"Zhiyuan Yin,&nbsp;Liya Bi,&nbsp;Yueqing Shi and Shaowei Li*,&nbsp;","doi":"10.1021/acsmeasuresciau.4c0009710.1021/acsmeasuresciau.4c00097","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.4c00097https://doi.org/10.1021/acsmeasuresciau.4c00097","url":null,"abstract":"<p >We present the design of a helium liquefaction system tailored to efficiently recover helium vapor from either an individual or a small cluster of vibration-sensitive cryogenic instruments. This design prioritizes a compact footprint, mitigating potential contamination sources such as gas bags and oil-lubricated compressors while maximizing the recovery rate by capturing both the boil-offs during normal operation and the refilling process of the bath cryostat. We demonstrated its performance by applying it to a commercial low-temperature scanning probe microscope. It features a &gt;94% recovery rate and induces negligible vibrational noise to the microscope. Due to its adaptability, affordability, compact size, and suitability for homemade setups, we foresee that our design can be utilized across a wide range of experimental measurements where liquid helium is used as the cryogen.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 2","pages":"226–233 226–233"},"PeriodicalIF":4.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmeasuresciau.4c00097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143832879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid Colorimetric Detection of Sulfite in Red Wine Using Alginate-Copper Laccase Nanozyme with Smartphone as an Optical Readout","authors":"Kaayyoof Fikadu Gutema,&nbsp;Menbere Leul Mekonnen*,&nbsp;Bitania Teklu Yilma,&nbsp;Tesfaye Eshete Asrat,&nbsp;Jan Dellith,&nbsp;Marco Diegel,&nbsp;Andrea Csáki and Wolfgang Fritzsche,&nbsp;","doi":"10.1021/acsmeasuresciau.4c0008510.1021/acsmeasuresciau.4c00085","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.4c00085https://doi.org/10.1021/acsmeasuresciau.4c00085","url":null,"abstract":"<p >Compared with the conventional analytical methods, nanozyme-based colorimetric sensors offer simpler and more accessible solutions for point-of-need food safety monitoring. Herein, Alginate-Cu (AlgCu) is reported as a robust laccase mimetic nanozyme for the colorimetric detection of sulfite in red wine, a common preservative in winemaking. AlgCu represents a rational design of nanozymes where the multifunctional group alginate is used as a coordination environment for the Cu catalytic center, mimicking the amino acids microenvironment in the natural laccase. The laccase activity of the AlgCu is evaluated using 2,4-dichlorophenol as a model substrate, where its oxidized product reacts with 4-aminoantipyrine, forming a reddish-pink compound with an absorption peak at 510 nm. The result showed that the AlgCu exhibited 32.81% higher laccase activity than pristine copper NPs, highlighting the role of a coordination environment in improving catalytic activity. The addition of sulfite decreased the intensity of the catalytic chromogenic product, confirming that sulfite inhibited the laccase mimetic activity of AlgCu. The observed inhibition is linearly related to the sulfite concentration from 2 to 100 μM (<i>R</i>² = 0.996), enabling the detection of sulfite down to 0.78 μM. Furthermore, a sulfite concentration down to 4.9 μM could be detected by integrating the colorimetric assay with smartphone color readouts. Analysis of sulfite-spiked red wine samples gave recoveries between 96 and 106%. Overall, the obtained analytical figures of merits signify AlgCu as a robust nanozyme-based colorimetric chemosensor suitable for a point-of-need application in wine quality control and food safety monitoring in general.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"145–154 145–154"},"PeriodicalIF":4.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmeasuresciau.4c00085","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436098","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Rapid Colorimetric Detection of Sulfite in Red Wine Using Alginate-Copper Laccase Nanozyme with Smartphone as an Optical Readout.","authors":"Kaayyoof Fikadu Gutema, Menbere Leul Mekonnen, Bitania Teklu Yilma, Tesfaye Eshete Asrat, Jan Dellith, Marco Diegel, Andrea Csáki, Wolfgang Fritzsche","doi":"10.1021/acsmeasuresciau.4c00085","DOIUrl":"10.1021/acsmeasuresciau.4c00085","url":null,"abstract":"<p><p>Compared with the conventional analytical methods, nanozyme-based colorimetric sensors offer simpler and more accessible solutions for point-of-need food safety monitoring. Herein, Alginate-Cu (AlgCu) is reported as a robust laccase mimetic nanozyme for the colorimetric detection of sulfite in red wine, a common preservative in winemaking. AlgCu represents a rational design of nanozymes where the multifunctional group alginate is used as a coordination environment for the Cu catalytic center, mimicking the amino acids microenvironment in the natural laccase. The laccase activity of the AlgCu is evaluated using 2,4-dichlorophenol as a model substrate, where its oxidized product reacts with 4-aminoantipyrine, forming a reddish-pink compound with an absorption peak at 510 nm. The result showed that the AlgCu exhibited 32.81% higher laccase activity than pristine copper NPs, highlighting the role of a coordination environment in improving catalytic activity. The addition of sulfite decreased the intensity of the catalytic chromogenic product, confirming that sulfite inhibited the laccase mimetic activity of AlgCu. The observed inhibition is linearly related to the sulfite concentration from 2 to 100 μM (<i>R</i> ² = 0.996), enabling the detection of sulfite down to 0.78 μM. Furthermore, a sulfite concentration down to 4.9 μM could be detected by integrating the colorimetric assay with smartphone color readouts. Analysis of sulfite-spiked red wine samples gave recoveries between 96 and 106%. Overall, the obtained analytical figures of merits signify AlgCu as a robust nanozyme-based colorimetric chemosensor suitable for a point-of-need application in wine quality control and food safety monitoring in general.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"145-154"},"PeriodicalIF":4.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843496/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Economical and Efficient Helium Recovery System for Vibration-Sensitive Applications.","authors":"Zhiyuan Yin, Liya Bi, Yueqing Shi, Shaowei Li","doi":"10.1021/acsmeasuresciau.4c00097","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.4c00097","url":null,"abstract":"<p><p>We present the design of a helium liquefaction system tailored to efficiently recover helium vapor from either an individual or a small cluster of vibration-sensitive cryogenic instruments. This design prioritizes a compact footprint, mitigating potential contamination sources such as gas bags and oil-lubricated compressors while maximizing the recovery rate by capturing both the boil-offs during normal operation and the refilling process of the bath cryostat. We demonstrated its performance by applying it to a commercial low-temperature scanning probe microscope. It features a >94% recovery rate and induces negligible vibrational noise to the microscope. Due to its adaptability, affordability, compact size, and suitability for homemade setups, we foresee that our design can be utilized across a wide range of experimental measurements where liquid helium is used as the cryogen.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 2","pages":"226-233"},"PeriodicalIF":4.6,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144055630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the Impact of Polyethylenimine-Coated Gold Nanoparticle Size on the Efficiency of Sandwich-Style Electrochemical Immunosensors","authors":"Thitirat Putnin,&nbsp;Supakeit Chanarsa,&nbsp;Patrawadee Yaiwong,&nbsp;Aroonsri Ngamaroonchote,&nbsp;Noppadol Aroonyadet,&nbsp;Jaroon Jakmunee,&nbsp;Suwussa Bamrungsap,&nbsp;Rawiwan Laocharoensuk and Kontad Ounnunkad*,&nbsp;","doi":"10.1021/acsmeasuresciau.4c0007510.1021/acsmeasuresciau.4c00075","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.4c00075https://doi.org/10.1021/acsmeasuresciau.4c00075","url":null,"abstract":"<p >Sometimes, smaller size is not always better, and looking for nanomaterials that offer better device performance requires consideration of their properties at the first stage. In this study, the effects of the size of polyethylenimine-capped AuNPs (PEI-AuNPs) and proteins on the immunosensor performances, namely, sensitivity and limit of detection, are examined. The size-effect investigation of PEI-AuNPs involves their modification on the surface of disposable screen-printed carbon electrodes to support primary antibodies and their ability to load secondary antibodies and redox probes to perform amplification in the immunosensor. The correlation of the average size, electrochemical activities, protein size, and device property of PEI-AuNPs is investigated. The synthesized PEI-AuNPs with different average diameters ranging from 4.7 to 44.9 nm are employed for the investigation. When the sensor surface forms a sandwich architecture, the detection employs the current response of Ag⁺ ions on the PEI-AuNPs bioconjugate, which greatly increases by increasing the protein concentration. In addition, the best electrochemical signal of PEI-AuNPs or their antibody complexes with a unique AuNPs’ average size allows superior signal amplification. The effect of using different sizes of target proteins on their devices is not significantly observed. Although in general small-sized nanomaterials offer high active surface areas, which can improve the electrode surface, reactivity, and device performance, we observe that the medium size of PEI-AuNPs (16.3 nm) gives the best sensitivity and detection limit of this sensor type. Therefore, the finding is useful for considering and optimizing their sizes for tunable voltammetric properties and acquiring a superior sensor.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"96–108 96–108"},"PeriodicalIF":4.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmeasuresciau.4c00075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the Impact of Polyethylenimine-Coated Gold Nanoparticle Size on the Efficiency of Sandwich-Style Electrochemical Immunosensors.","authors":"Thitirat Putnin, Supakeit Chanarsa, Patrawadee Yaiwong, Aroonsri Ngamaroonchote, Noppadol Aroonyadet, Jaroon Jakmunee, Suwussa Bamrungsap, Rawiwan Laocharoensuk, Kontad Ounnunkad","doi":"10.1021/acsmeasuresciau.4c00075","DOIUrl":"10.1021/acsmeasuresciau.4c00075","url":null,"abstract":"<p><p>Sometimes, smaller size is not always better, and looking for nanomaterials that offer better device performance requires consideration of their properties at the first stage. In this study, the effects of the size of polyethylenimine-capped AuNPs (PEI-AuNPs) and proteins on the immunosensor performances, namely, sensitivity and limit of detection, are examined. The size-effect investigation of PEI-AuNPs involves their modification on the surface of disposable screen-printed carbon electrodes to support primary antibodies and their ability to load secondary antibodies and redox probes to perform amplification in the immunosensor. The correlation of the average size, electrochemical activities, protein size, and device property of PEI-AuNPs is investigated. The synthesized PEI-AuNPs with different average diameters ranging from 4.7 to 44.9 nm are employed for the investigation. When the sensor surface forms a sandwich architecture, the detection employs the current response of Ag⁺ ions on the PEI-AuNPs bioconjugate, which greatly increases by increasing the protein concentration. In addition, the best electrochemical signal of PEI-AuNPs or their antibody complexes with a unique AuNPs' average size allows superior signal amplification. The effect of using different sizes of target proteins on their devices is not significantly observed. Although in general small-sized nanomaterials offer high active surface areas, which can improve the electrode surface, reactivity, and device performance, we observe that the medium size of PEI-AuNPs (16.3 nm) gives the best sensitivity and detection limit of this sensor type. Therefore, the finding is useful for considering and optimizing their sizes for tunable voltammetric properties and acquiring a superior sensor.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"96-108"},"PeriodicalIF":4.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843508/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143483920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Challenges in PFAS Postdegradation Analysis: Insights from the PFAS-CTAB Model System","authors":"Chanaka Navarathna*,&nbsp;Ransford Appianin Boateng and Long Luo*,&nbsp;","doi":"10.1021/acsmeasuresciau.4c0008310.1021/acsmeasuresciau.4c00083","DOIUrl":"https://doi.org/10.1021/acsmeasuresciau.4c00083https://doi.org/10.1021/acsmeasuresciau.4c00083","url":null,"abstract":"<p >Per- and polyfluoroalkyl substances (PFAS) are synthetic chemicals widely used for their oil and water-repellent properties. Their environmental persistence and potential health risks have raised significant concerns. As PFAS degrades through remediation or natural processes, they form complex mixtures of the original chemicals, transformation byproducts, and degradation additives. Analyzing PFAS after degradation presents analytical challenges due to possible chemical and physical interactions, including ion pairing, micelle formation, and complexation. These factors can significantly impact the precision and accuracy of PFAS measurements, yet they are often overlooked in PFAS degradation studies. In this work, we demonstrate that with the addition of ppb-level cetyltrimethylammonium bromide (CTAB), a cationic surfactant used in PFAS plasma-based degradation, the PFAS calibration curve linearity, sensitivity, and reproducibility are severely compromised. Isotopically labeled internal standards cannot fully correct these issues. Furthermore, the standard EPA methods 537.1, 533, and 1633 could not accurately recover PFAS concentrations in the PFAS and CTAB mixtures, with severe matrix effects observed for longer-chain and nitrogen-containing PFAS. Among these methods, Method 1633 is currently the most suitable option for postdegradation analysis. Method 1633 showed the lowest CTAB interference because this method used another weak ion pair additive, formic acid or acetic acid (in commercial lab analysis), to acidify the sample before LC–MS/MS analysis and added an isotopically labeled internal standard. For future PFAS degradation studies, we recommend systematically evaluating the matrix effect on the PFAS quantification using a recovery matrix to validate the analytical methods before use.</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"135–144 135–144"},"PeriodicalIF":4.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.acs.org/doi/epdf/10.1021/acsmeasuresciau.4c00083","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143435879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mechanistic Insights into HRP-Catalyzed Oxidation of the Near-Infrared Fluorescent Dye Sulfo-cyanine 7.","authors":"Gabriela Manrique, Jérémie Gottraux, Simon Matoori","doi":"10.1021/acsmeasuresciau.4c00080","DOIUrl":"10.1021/acsmeasuresciau.4c00080","url":null,"abstract":"<p><p>Horseradish peroxidase (HRP) is a widely used enzyme that oxidizes a range of substrates in the presence of its co-substrate hydrogen peroxide (H₂O₂). In the past, we identified sulfo-cyanine 7 (S7) as a novel near-infrared substrate of HRP, which loses its fluorescence upon enzymatic oxidation in a hydrogen peroxide-dependent manner. However, the catalytic mechanism and the chemical structure of the oxidation products were not well understood. In this study, we investigate the catalytic mechanism of S7 oxidation by HRP and identify two radical products formed during the reaction. Our results point to the formation of non-near-infrared fluorescent species, and the regeneration of S7. These results strongly point to a disproportionation reaction that was described for other HRP substrates, namely the structurally related ABTS (2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid)).</p>","PeriodicalId":29800,"journal":{"name":"ACS Measurement Science Au","volume":"5 1","pages":"130-134"},"PeriodicalIF":4.6,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11843493/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143484200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}