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van den Broek J, Keller SD, Goodall I, Parish-Virtue K, Bauer-Christoph C, Fuchs J, Tsipi D, Güntner AT, Blum T, Mathurin JC, Steiger MG, Shirvani R, Gössinger M, Graf M, Anderhub P, Z'graggen D, Hüsser C, Faigle B, Agapios A. Handheld methanol detector for beverage analysis: interlaboratory validation. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3859-3866. [PMID: 38847307 DOI: 10.1039/d4ay00919c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Methanol is a toxic alcohol contained in alcoholic beverages as a natural byproduct of fermentation or added intentionally to counterfeits to increase profit. To ensure consumer safety, many countries and the EU have established strict legislation limits for methanol content. Methanol concentration is mostly detected by laboratory instrumentation since mobile devices for routine on-site testing of beverages in distilleries, at border stations or even at home are not available. Here, we validated a handheld methanol detector for beverage analysis in an ISO 5725 interlaboratory trial: a total of 119 measurements were performed by 17 independent participants (distilleries, universities, authorities, and competence centers) from six countries on samples with relevant methanol concentrations (0.1, 1.5 vol%). The detector was based on a microporous separation filter and a nanostructured gas sensor allowing on-site measurement of methanol down to 0.01 vol% (in the liquid) within only 2 min by laymen. The detector showed excellent repeatability (<5.4%), reproducibility (<9.5%) and small bias (<0.012 vol%). Additional measurements on various methanol-spiked alcoholic beverages (whisky, rum, gin, vodka, tequila, port, sherry, liqueur) indicated that the detector is not interfered by environmental temperature and spirit composition, featuring excellent linearity (R2 > 0.99) down to methanol concentrations of 0.01 vol%. This device has been recently commercialized (Alivion Spark M-20) with comparable accuracy to the gold-standard gas chromatography and can be readily applied for final product inspection, intake control of raw materials or to identify toxic counterfeit products.
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Affiliation(s)
| | | | - Ian Goodall
- Scotch Whisky Research Institute, UK-EH144AP Riccarton, UK
| | | | | | - Johannes Fuchs
- Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit, DE-97082 Würzburg, Germany
| | - Despina Tsipi
- General Chemical State Laboratory, GR-11521 Athens, Greece
| | - Andreas T Güntner
- Human-centered Sensing Laboratory, ETH Zürich, CH-8092 Zürich, Switzerland
| | - Thomas Blum
- Research Division Food Microbial Systems, Agroscope, CH-8820 Wädenswil, Switzerland
| | | | - Matthias G Steiger
- Institute of Chemical, Environmental and Bioscience Engineering, Research Group Biochemistry, TU Wien, AT-1060 Vienna, Austria
| | - Roghayeh Shirvani
- Institute of Chemical, Environmental and Bioscience Engineering, Research Group Biochemistry, TU Wien, AT-1060 Vienna, Austria
| | - Manfred Gössinger
- Department of Fruit Processing, Federal College and Research Institute for Viticulture and Pomology Klosterneuburg, AT-3400 Klosterneuburg, Austria
| | - Monika Graf
- Department of Fruit Processing, Federal College and Research Institute for Viticulture and Pomology Klosterneuburg, AT-3400 Klosterneuburg, Austria
| | | | | | | | | | - Agapiou Agapios
- Department of Chemistry, University of Cyprus, CY-1678 Nicosia, Cyprus
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2
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Kumar P, Chandel M, Kataria S, Swami K, Kaur K, Sahu BK, Dadhich A, Urkude RR, Subaharan K, Koratkar N, Shanmugam V. Handheld Crop Pest Sensor Using Binary Catalyst-Loaded Nano-SnO 2 Particles for Oxidative Signal Amplification. ACS Sens 2024; 9:81-91. [PMID: 38113168 DOI: 10.1021/acssensors.3c01669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
In agriculture, pest management is a major challenge. Crop releases volatiles in response to the pest; hence, sensing these volatile signals at a very early stage will ease pest management. Here, binary catalyst-loaded SnO2 nanoparticles of <5 nm were synthesized for the repeated capture and oxidation of the signature volatile and its products to amplify the chemoresistive signal to detect concentrations as low as ≈120 ppb. The sensitivity may be due to the presence of the elements in the Sn-Fe-Pt bond evidenced by extended X-ray absorption fine-structure spectroscopy (EXAFS) that captures and oxidize the volatile without escaping. This strong catalyst may oxidize nontarget volatiles and can cause false signals; hence, a molecular sieve filter has been coupled to ensure high selectivity for the detection ofTuta absolutainfestation in tomato. Finally, with the support of a mobile power bank, the optimized sensor has been assembled into a lightweight handheld device.
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Affiliation(s)
- Prem Kumar
- Institute of Nano Science and Technology, Mohali 140306, India
| | - Mahima Chandel
- Institute of Nano Science and Technology, Mohali 140306, India
| | - Sarita Kataria
- Institute of Nano Science and Technology, Mohali 140306, India
| | - Kanchan Swami
- Institute of Nano Science and Technology, Mohali 140306, India
| | - Kamaljit Kaur
- Institute of Nano Science and Technology, Mohali 140306, India
| | | | - Ankita Dadhich
- Institute of Nano Science and Technology, Mohali 140306, India
| | - Rajashri R Urkude
- Accelerator Physics & Synchrotrons Utilization Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India
| | - Kesavan Subaharan
- ICAR - National Bureau of Agricultural Insect Resources, Bangalore 560064, India
| | - Nikhil Koratkar
- Materials Science Department, Rensselaer Polytechnic Institute, Troy, New York 12180, United States
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3
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Ndebia EJ, Kamsu GT. Drinking patterns, alcoholic beverage types, and esophageal cancer risk in Africa: a comprehensive systematic review and meta-analysis. Front Oncol 2023; 13:1310253. [PMID: 38188303 PMCID: PMC10768047 DOI: 10.3389/fonc.2023.1310253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 12/04/2023] [Indexed: 01/09/2024] Open
Abstract
Africa is the continent most affected by esophageal cancer in the world. Alcoholic beverages are controversially blamed, as esophageal cancer is a rare disease in several other countries ranked in the top 10 for consumption of alcoholic beverages. This study aims to conduct a comprehensive systematic review of published literature, statistically summarizing the strength of the association between drinking patterns and types, and the risk of esophageal cancer in Africa. A computerized search of reputable databases such as Medline/PubMed, EMBASE, Web of Science, and African Journals Online was performed to identify relevant studies published up to September 2023. The quality of the studies was evaluated using the Newcastle-Ottawa scale for case-control studies and the Agency for Healthcare Research and Quality tool for cross-sectional studies. A funnel plot and Egger test were utilized to assess potential publication bias. Meta-analyses were conducted using random-effects models with RevMan 5.3 and Stata software to estimate summary effects. The systematic review identified a total of 758,203 studies, primarily from Eastern and Southern Africa. The pooled samples across all studies comprised 29,026 individuals, including 11,237 individuals with cancer and 17,789 individuals without cancer. Meta-analysis revealed a significant association between alcohol consumption and the risk of esophageal cancer (odds ratio [OR] = 1.81; 95% confidence interval [CI], 1.50-2.19). Further analysis based on the frequency of alcoholic beverage consumption indicated a stronger association with daily (OR = 2.38; 95% CI, 1.81-3.13) and weekly (OR = 1.94; 95% CI, 1.32-2.84) drinkers in contrast to occasional drinkers (OR = 1.02; 95% CI, 0.81-1.29). Additionally, consumption of traditional alcoholic beverages was significantly associated with the risk of esophageal cancer in African populations (OR = 2.00; 95% CI, 1.42-2.82). However, no relationship has been established between the exclusive consumption of non-traditional drinks and the risk of esophageal cancer. In conclusion, the results of this study confirm the hypothesis that daily and weekly drinking patterns, significantly increase the risk of esophageal cancer in Africa, while occasional consumption does not show a significant association. Additionally, the consumption of traditional alcoholic beverages is notably linked to the risk of esophageal cancer in African populations.
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4
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Bastide GMGBH, Remund AL, Oosthuizen DN, Derron N, Gerber PA, Weber IC. Handheld device quantifies breath acetone for real-life metabolic health monitoring. SENSORS & DIAGNOSTICS 2023; 2:918-928. [PMID: 37465007 PMCID: PMC10351029 DOI: 10.1039/d3sd00079f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 06/10/2023] [Indexed: 07/20/2023]
Abstract
Non-invasive breath analysis with mobile health devices bears tremendous potential to guide therapeutic treatment and personalize lifestyle changes. Of particular interest is the breath volatile acetone, a biomarker for fat burning, that could help in understanding and treating metabolic diseases. Here, we report a hand-held (6 × 10 × 19.5 cm3), light-weight (490 g), and simple device for rapid acetone detection in breath. It comprises a tailor-made end-tidal breath sampling unit, connected to a sensor and a pump for on-demand breath sampling, all operated using a Raspberry Pi microcontroller connected with a HDMI touchscreen. Accurate acetone detection is enabled by introducing a catalytic filter and a separation column, which remove and separate undesired interferents from acetone upstream of the sensor. This way, acetone is detected selectively even in complex gas mixtures containing highly concentrated interferents. This device accurately tracks breath acetone concentrations in the exhaled breath of five volunteers during a ketogenic diet, being as high as 26.3 ppm. Most importantly, it can differentiate small acetone changes during a baseline visit as well as before and after an exercise stimulus, being as low as 0.5 ppm. It is stable for at least four months (122 days), and features excellent bias and precision of 0.03 and 0.6 ppm at concentrations below 5 ppm, as validated by proton-transfer-reaction time-of-flight mass spectrometry (PTR-ToF-MS). Hence, this detector is highly promising for simple-in-use, non-invasive, and routine monitoring of acetone to guide therapeutic treatment and track lifestyle changes.
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Affiliation(s)
- Grégoire M G B H Bastide
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich CH-8092 Zurich Switzerland
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Anna L Remund
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich CH-8092 Zurich Switzerland
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Dina N Oosthuizen
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich CH-8092 Zurich Switzerland
- Department of Mechanical and Industrial Engineering, Northeastern University 467 Egan Center 02115 MA Boston USA
| | - Nina Derron
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Philipp A Gerber
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Ines C Weber
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich CH-8092 Zurich Switzerland
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
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Jangjou A, Moqadas M, Mohsenian L, Kamyab H, Chelliapan S, Alshehery S, Ali MA, Dehbozorgi F, Yadav KK, Khorami M, Zarei Jelyani N. Awareness raising and dealing with methanol poisoning based on effective strategies. ENVIRONMENTAL RESEARCH 2023; 228:115886. [PMID: 37072082 DOI: 10.1016/j.envres.2023.115886] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 04/04/2023] [Accepted: 04/10/2023] [Indexed: 05/16/2023]
Abstract
Intoxication with methanol most commonly occurs as a consequence of ingesting, inhaling, or coming into contact with formulations that include methanol as a base. Clinical manifestations of methanol poisoning include suppression of the central nervous system, gastrointestinal symptoms, and decompensated metabolic acidosis, which is associated with impaired vision and either early or late blindness within 0.5-4 h after ingestion. After ingestion, methanol concentrations in the blood that are greater than 50 mg/dl should raise some concern. Ingested methanol is typically digested by alcohol dehydrogenase (ADH), and it is subsequently redistributed to the body's water to attain a volume distribution that is about equivalent to 0.77 L/kg. Moreover, it is removed from the body as its natural, unchanged parent molecules. Due to the fact that methanol poisoning is relatively uncommon but frequently involves a large number of victims at the same time, this type of incident occupies a special position in the field of clinical toxicology. The beginning of the COVID-19 pandemic has resulted in an increase in erroneous assumptions regarding the preventative capability of methanol in comparison to viral infection. More than 1000 Iranians fell ill, and more than 300 of them passed away in March of this year after they consumed methanol in the expectation that it would protect them from a new coronavirus. The Atlanta epidemic, which involved 323 individuals and resulted in the deaths of 41, is one example of mass poisoning. Another example is the Kristiansand outbreak, which involved 70 people and resulted in the deaths of three. In 2003, the AAPCC received reports of more than one thousand pediatric exposures. Since methanol poisoning is associated with high mortality rates, it is vital that the condition be addressed seriously and managed as quickly as feasible. The objective of this review was to raise awareness about the mechanism and metabolism of methanol toxicity, the introduction of therapeutic interventions such as gastrointestinal decontamination and methanol metabolism inhibition, the correction of metabolic disturbances, and the establishment of novel diagnostic/screening nanoparticle-based strategies for methanol poisoning such as the discovery of ADH inhibitors as well as the detection of the adulteration of alcoholic drinks by nanoparticles in order to prevent methanol poisoning. In conclusion, increasing warnings and knowledge about clinical manifestations, medical interventions, and novel strategies for methanol poisoning probably results in a decrease in the death load.
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Affiliation(s)
- Ali Jangjou
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran; Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mostafa Moqadas
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran; Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Leila Mohsenian
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran; Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hesam Kamyab
- Faculty of Architecture and Urbanism, UTE University, Calle Rumipamba S/N and Bourgeois, Quito, Ecuador; Department of Biomaterials, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai, 600 077, India; Process Systems Engineering Centre (PROSPECT), Faculty of Chemical and Energy Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, Johor, Malaysia.
| | - Shreeshivadasan Chelliapan
- Engineering Department, Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Jln Sultan Yahya Petra, 54100, Kuala Lumpur, Malaysia.
| | - Sultan Alshehery
- Department of Mechanical Engineering King Khalid University, zip code - 62217, Saudi Arabia
| | - Mohammed Azam Ali
- Department of Mechanical Engineering King Khalid University, zip code - 62217, Saudi Arabia
| | - Farbod Dehbozorgi
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran; Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran; Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Krishna Kumar Yadav
- Faculty of Science and Technology, Madhyanchal Professional University, Ratibad, Bhopal, 462044, India; Environmental and Atmospheric Sciences Research Group, Scientific Research Center, Al-Ayen University, Thi-Qar, Nasiriyah, 64001, Iraq
| | - Masoud Khorami
- Department of Civil Engineering, Islamic Azad University, Central Tehran Branch, Tehran, Iran
| | - Najmeh Zarei Jelyani
- Department of Emergency Medicine, School of Medicine, Namazi Teaching Hospital, Shiraz University of Medical Sciences, Shiraz, Iran; Emergency Medicine Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.
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6
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Zhu LY, Ou LX, Mao LW, Wu XY, Liu YP, Lu HL. Advances in Noble Metal-Decorated Metal Oxide Nanomaterials for Chemiresistive Gas Sensors: Overview. NANO-MICRO LETTERS 2023; 15:89. [PMID: 37029296 PMCID: PMC10082150 DOI: 10.1007/s40820-023-01047-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2022] [Accepted: 02/25/2023] [Indexed: 06/19/2023]
Abstract
Highly sensitive gas sensors with remarkably low detection limits are attractive for diverse practical application fields including real-time environmental monitoring, exhaled breath diagnosis, and food freshness analysis. Among various chemiresistive sensing materials, noble metal-decorated semiconducting metal oxides (SMOs) have currently aroused extensive attention by virtue of the unique electronic and catalytic properties of noble metals. This review highlights the research progress on the designs and applications of different noble metal-decorated SMOs with diverse nanostructures (e.g., nanoparticles, nanowires, nanorods, nanosheets, nanoflowers, and microspheres) for high-performance gas sensors with higher response, faster response/recovery speed, lower operating temperature, and ultra-low detection limits. The key topics include Pt, Pd, Au, other noble metals (e.g., Ag, Ru, and Rh.), and bimetals-decorated SMOs containing ZnO, SnO2, WO3, other SMOs (e.g., In2O3, Fe2O3, and CuO), and heterostructured SMOs. In addition to conventional devices, the innovative applications like photo-assisted room temperature gas sensors and mechanically flexible smart wearable devices are also discussed. Moreover, the relevant mechanisms for the sensing performance improvement caused by noble metal decoration, including the electronic sensitization effect and the chemical sensitization effect, have also been summarized in detail. Finally, major challenges and future perspectives towards noble metal-decorated SMOs-based chemiresistive gas sensors are proposed.
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Affiliation(s)
- Li-Yuan Zhu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Lang-Xi Ou
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Li-Wen Mao
- School of Opto-Electronic Information and Computer Engineering, University of Shanghai for Science and Technology, Shanghai, 200093, People's Republic of China
| | - Xue-Yan Wu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Yi-Ping Liu
- State Key Laboratory of Metal Matrix Composites, School of Material Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, People's Republic of China
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics and Systems, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China.
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7
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Güntner AT, Schenk FM. Environmental formaldehyde sensing at room temperature by smartphone-assisted and wearable plasmonic nanohybrids. NANOSCALE 2023; 15:3967-3977. [PMID: 36723208 PMCID: PMC9949580 DOI: 10.1039/d2nr06599a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Formaldehyde is a toxic and carcinogenic indoor air pollutant. Promising for its routine detection are gas sensors based on localized surface plasmon resonance (LSPR). Such sensors trace analytes by converting tiny changes in the local dielectric environment into easily readable, optical signals. Yet, this mechanism is inherently non-selective to volatile organic compounds (like formaldehyde) and yields rarely detection limits below parts-per-million concentrations. Here, we reveal that chemical reaction-mediated LSPR with nanohybrids of Ag/AgOx core-shell clusters on TiO2 enables highly selective formaldehyde sensing down to 5 parts-per-billion (ppb). Therein, AgOx is reduced by the formaldehyde to metallic Ag resulting in strong plasmonic signal changes, as measured by UV/Vis spectroscopy and confirmed by X-ray diffraction. This interaction is highly selective to formaldehyde over other aldehydes, alcohols, ketones, aromatic compounds (as confirmed by high-resolution mass spectrometry), inorganics, and quite robust to relative humidity changes. Since this sensor works at room temperature, such LSPR nanohybrids are directly deposited onto flexible wristbands to quantify formaldehyde between 40-500 ppb at 50% RH, even with a widely available smartphone camera (Pearson correlation coefficient r = 0.998). Such chemoresponsive coatings open new avenues for wearable devices in environmental, food, health and occupational safety applications, as demonstrated by an early field test in the pathology of a local hospital.
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Affiliation(s)
- Andreas T Güntner
- Human-centered Sensing Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland.
- Department of Endocrinology, Diabetology, and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), CH-8091 Zürich, Switzerland
| | - Florian M Schenk
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
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8
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Shemirani M, Habibimoghaddam F, Mohammadimasoudi M, Esmailpour M, Goudarzi A. Rapid and Label-Free Methanol Identification in Alcoholic Beverages Utilizing a Textile Grid Impregnated with Chiral Nematic Liquid Crystals. ACS OMEGA 2022; 7:37546-37554. [PMID: 36312434 PMCID: PMC9609077 DOI: 10.1021/acsomega.2c04312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/04/2022] [Indexed: 06/16/2023]
Abstract
Methanol contamination of alcoholic drinks can lead to severe health problems for human beings including poisoning, headache, blindness, and even death. Therefore, having access to a simple and inexpensive way for monitoring beverages is vital. Herein, a portable, low cost, and easy to use sensor is fabricated based on the exploitation of chiral nematic liquid crystals (CLCs) and a textile grid for detection of methanol in two distinct alcoholic beverages: red wine and vodka. The working principle of the sensor relies on the reorientation of the liquid crystal molecules upon exposure to the contaminated alcoholic beverages with different concentrations of methanol (0, 2, 4, and 6 wt %) and the changes in the observed colorful textures of the CLCs as well as the intensity of the output light. The proposed sensor is label free and rapid.
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9
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Kumar A, Soni V, Singh P, Parwaz Khan AA, Nazim M, Mohapatra S, Saini V, Raizada P, Hussain CM, Shaban M, Marwani HM, Asiri AM. Green aspects of photocatalysts during corona pandemic: a promising role for the deactivation of COVID-19 virus. RSC Adv 2022; 12:13609-13627. [PMID: 35530385 PMCID: PMC9073611 DOI: 10.1039/d1ra08981a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2021] [Accepted: 03/17/2022] [Indexed: 12/14/2022] Open
Abstract
The selection of a facile, eco-friendly, and effective methodology is the need of the hour for efficient curing of the COVID-19 virus in air, water, and many food products. Recently, semiconductor-based photocatalytic methodologies have provided promising, green, and sustainable approaches to battle against viral activation via the oxidative capabilities of various photocatalysts with excellent performance under moderate conditions and negligible by-products generation as well. Considering this, recent advances in photocatalysis for combating the spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) are inclusively highlighted. Starting from the origin to the introduction of the coronavirus, the significant potential of photocatalysis against viral prevention and -disinfection is discussed thoroughly. Various photocatalytic material-based systems including metal-oxides, metal-free and advanced 2D materials (MXenes, MOFs and COFs) are systematically examined to understand the mechanistic insights of virus-disinfection in the human body to fight against COVID-19 disease. Also, a roadmap toward sustainable solutions for ongoing COVID-19 contagion is also presented. Finally, the challenges in this field and future perspectives are comprehensively discussed involving the bottlenecks of current photocatalytic systems along with potential recommendations to deal with upcoming pandemic situations in the future.
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Affiliation(s)
- Abhinandan Kumar
- School of Advanced Chemical Sciences, Shoolini University Solan Himachal Pradesh 173229 India
| | - Vatika Soni
- School of Advanced Chemical Sciences, Shoolini University Solan Himachal Pradesh 173229 India
| | - Pardeep Singh
- School of Advanced Chemical Sciences, Shoolini University Solan Himachal Pradesh 173229 India
| | - Aftab Aslam Parwaz Khan
- Center of Excellence for Advanced Materials Research, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Mohammed Nazim
- Department of Chemical Engineering, Kumoh National Institute of Technology 61 Daehak-ro Gumi-si Gyeongbuk-do 39177 Republic of Korea
| | - Satyabrata Mohapatra
- University School of Basic and Applied Sciences, Guru Gobind Singh Indraprastha University Dwarka New Delhi 110078 India
| | - Vipin Saini
- Maharishi Markandeshwar Medical College Kumarhatti Solan Himachal Pradesh 173229 India
| | - Pankaj Raizada
- School of Advanced Chemical Sciences, Shoolini University Solan Himachal Pradesh 173229 India
| | | | - Mohamed Shaban
- Department of Physics, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
| | - Hadi M Marwani
- Center of Excellence for Advanced Materials Research, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
| | - Abdullah M Asiri
- Center of Excellence for Advanced Materials Research, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
- Chemistry Department, Faculty of Science, King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia
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10
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Li L, Li J, Fu W, Jiang D, Song Y, Yang Q, Zhu W, Zhang J. Mg-doped InSnO nanofiber field-effect transistor for methanol gas detection at room temperature. NANOTECHNOLOGY 2022; 33:205502. [PMID: 35108694 DOI: 10.1088/1361-6528/ac512d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Research on high-performance gas sensors for detecting toxic and harmful methanol gas is still a very important issue. For gas sensors, it is very important to be able to achieve low concentration detection at room temperature. In this work, we used the electrospinning method to prepare Mg-doped InSnO nanofiber field-effect transistors (FETs) methanol gas sensor. When the Mg element doping concentration is 2.3 mol.%, InSnO nanofiber FET exhibits excellent electrical properties, including higher mobility of 3.17 cm2V-1s-1, threshold voltage of 1.51 V, subthreshold swing of 0.42 V/decade, the excellent on/off current ratio is about 108and the positive bias stress stability of the InSnO nanofiber FET through Mg doping has been greatly improved. In addition, the InSnMgO nanofiber FET gas sensor exhibits acceptable gas selectivity and sensitivity to methanol gas at room temperature. In the methanol gas sensor test at room temperature, when the methanol gas concentration is 60 ppm at room temperature, the response value of the InSnMgO nanofiber FET gas sensor is 81.92; and when the methanol concentration is 5 ppm, the response value is still 1.21. This work provides an effective and novel way to build a gas sensor at room temperature and use it to detect methanol gas at room temperature.
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Affiliation(s)
- Linkang Li
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Jun Li
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
- Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072, People's Republic of China
| | - Wenhui Fu
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Dongliang Jiang
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Yanjie Song
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Qiuhong Yang
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Wenqing Zhu
- School of Material Science and Engineering, Shanghai University, Jiading, Shanghai 201800, People's Republic of China
| | - Jianhua Zhang
- Key Laboratory of Advanced Display and System Applications, Ministry of Education, Shanghai University, Shanghai 200072, People's Republic of China
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Weber IC, Rüedi P, Šot P, Güntner AT, Pratsinis SE. Handheld Device for Selective Benzene Sensing over Toluene and Xylene. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103853. [PMID: 34837486 PMCID: PMC8811843 DOI: 10.1002/advs.202103853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/21/2021] [Indexed: 06/01/2023]
Abstract
More than 1 million workers are exposed routinely to carcinogenic benzene, contained in various consumer products (e.g., gasoline, rubbers, and dyes) and released from combustion of organics (e.g., tobacco). Despite strict limits (e.g., 50 parts per billion (ppb) in the European Union), routine monitoring of benzene is rarely done since low-cost sensors lack accuracy. This work presents a compact, battery-driven device that detects benzene in gas mixtures with unprecedented selectivity (>200) over inorganics, ketones, aldehydes, alcohols, and even challenging toluene and xylene. This can be attributed to strong Lewis acid sites on a packed bed of catalytic WO3 nanoparticles that prescreen a chemoresistive Pd/SnO2 sensor. That way, benzene is detected down to 13 ppb with superior robustness to relative humidity (RH, 10-80%), fulfilling the strictest legal limits. As proof of concept, benzene is quantified in indoor air in good agreement (R2 ≥ 0.94) with mass spectrometry. This device is readily applicable for personal exposure assessment and can assist the implementation of low-emission zones for sustainable environments.
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Affiliation(s)
- Ines C. Weber
- Particle Technology LaboratoryDepartment of Mechanical and Process EngineeringETH ZurichZurichCH‐8092Switzerland
| | - Pascal Rüedi
- Particle Technology LaboratoryDepartment of Mechanical and Process EngineeringETH ZurichZurichCH‐8092Switzerland
| | - Petr Šot
- Department of Chemistry and Applied BiosciencesETH ZurichZurichCH‐8049Switzerland
| | - Andreas T. Güntner
- Particle Technology LaboratoryDepartment of Mechanical and Process EngineeringETH ZurichZurichCH‐8092Switzerland
- Department of EndocrinologyDiabetologyand Clinical NutritionUniversity Hospital Zurich (USZ) and University of Zurich (UZH)ZurichCH‐8091Switzerland
| | - Sotiris E. Pratsinis
- Particle Technology LaboratoryDepartment of Mechanical and Process EngineeringETH ZurichZurichCH‐8092Switzerland
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12
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Weber IC, Derron N, Königstein K, Gerber PA, Güntner AT, Pratsinis SE. Monitoring Lipolysis by Sensing Breath Acetone down to Parts‐per‐Billion. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202100004] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Affiliation(s)
- Ines C. Weber
- Particle Technology Laboratory Department of Mechanical and Process Engineering ETH Zurich CH-8092 Zurich Switzerland
| | - Nina Derron
- Department of Endocrinology, Diabetology, and Clinical Nutrition University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Karsten Königstein
- Division Sports and Exercise Medicine Department of Sport, Exercise and Health University of Basel CH-4052 Basel Switzerland
| | - Philipp A. Gerber
- Department of Endocrinology, Diabetology, and Clinical Nutrition University Hospital Zurich (USZ) and University of Zurich (UZH) CH-8091 Zurich Switzerland
| | - Andreas T. Güntner
- Particle Technology Laboratory Department of Mechanical and Process Engineering ETH Zurich CH-8092 Zurich Switzerland
| | - Sotiris E. Pratsinis
- Particle Technology Laboratory Department of Mechanical and Process Engineering ETH Zurich CH-8092 Zurich Switzerland
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13
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Güntner AT, Magro L, van den Broek J, Pratsinis SE. Detecting methanol in hand sanitizers. iScience 2021; 24:102050. [PMID: 33537657 PMCID: PMC7840468 DOI: 10.1016/j.isci.2021.102050] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 12/24/2020] [Accepted: 01/05/2021] [Indexed: 01/10/2023] Open
Abstract
The coronavirus disease 2019 (COVID-19) pandemic has increased dramatically the demand for hand sanitizers. A major concern is methanol adulteration that caused more than 700 fatalities in Iran and U.S.A. (since February 2020). In response, the U.S. Food and Drug Administration has restricted the methanol content in sanitizers to 0.063 vol% and blacklisted 212 products (as of November 20, 2020). Here, we present a low-cost, handheld, and smartphone-assisted device that detects methanol selectively in sanitizers between 0.01 and 100 vol% within two minutes. It features a nanoporous polymer column that separates methanol selectively from confounders by adsorption. A chemoresistive gas sensor detects the methanol. When tested on commercial sanitizers (total 76 samples), methanol was quantified in excellent (R2 = 0.99) agreement to "gold standard" gas chromatography. Importantly, methanol quantification was hardly interfered by sanitizer composition and viscosity. This device meets an urgent need for on-site methanol screening by authorities, health professionals, and even laymen.
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Affiliation(s)
- Andreas T. Güntner
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Leandro Magro
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Jan van den Broek
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
| | - Sotiris E. Pratsinis
- Particle Technology Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, CH-8092 Zurich, Switzerland
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Mallakpour S, Azadi E, Hussain CM. The latest strategies in the fight against the COVID-19 pandemic: the role of metal and metal oxide nanoparticles. NEW J CHEM 2021. [DOI: 10.1039/d1nj00047k] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
In this review, we summarize and highlight the latest achievements based on nanoparticles in the fight against COVID-19.
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory
- Department of Chemistry
- Isfahan University of Technology
- Isfahan
- Islamic Republic of Iran
| | - Elham Azadi
- Organic Polymer Chemistry Research Laboratory
- Department of Chemistry
- Isfahan University of Technology
- Isfahan
- Islamic Republic of Iran
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