On the Use of the Intrinsic DNA Fluorescence for Monitoring Its Damage: A Contribution from Fundamental Studies

ACS Omega, Год журнала: 2024, Номер 9(25), С. 26826 - 26837

Опубликована: Июнь 13, 2024

The assessment of DNA damage by means appropriate fluorescent probes is widely spread. In the specific case UV-induced damage, it has been suggested to use emission dimeric photoproducts as an internal indicator for efficacy spermicidal lamps. However, in light fundamental studies on processes, outlined this review, not straightforward. It now well established that, addition photodimers formed via electronic excited state, photoionization also takes place with comparable or higher quantum yields, depending irradiation wavelength. Among multitude final lesions, some have fully characterized, but others remain unknown; them may emit, while go undetected upon monitoring fluorescence, result being strongly dependent both and excitation contrast, fluorescence undamaged nucleobases associated from ππ* states, localized excitonic, appearing at wavelengths shorter than 330 nm worthy explored end. Despite its low yield, readily detected nowadays. Its intensity decreases due disappearance reacting loss exciton coherence provoked presence independently their type. Thus, could potentially provide valuable information about induced, only UV radiation other sanitizing therapeutic agents.

Язык: Английский

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The self-assembly of polyacrylic acid nanoparticles induced by non-covalent interactions enhances the response of molecular fluorescent probes to formaldehyde

Journal of Materials Chemistry C, Год журнала: 2024, Номер 13(5), С. 2459 - 2469

Опубликована: Дек. 10, 2024

Advanced visual colorimetric reagents and paper sensors have been developed by constructing a fluorescent supramolecular polymer architecture PAA@NBHN, to meet the requirements of environmental monitoring.

Язык: Английский

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Human exposure to air contaminants under the far-UVC system operation in an office: Effects of lamp position and ventilation condition

Research Square (Research Square), Год журнала: 2024, Номер unknown

Опубликована: Июнь 5, 2024

The far-UVC (222 nm) system has emerged as a solution for controlling airborne transmission, yet its effect on indoor air quality concerning positioning remains understudied. In this study, we examined the impact of lamp position disinfection and secondary contaminant formation in small office. We employed three-dimensional computational fluid dynamics (CFD) model to integrate UV intensity fields formed by different positions (ceiling-mounted, wall-mounted, stand-alone types) with model. Our findings reveal that ceiling-mounted type reduces human exposure pathogens up 80%. For all positions, O₃ concentration breathing zone increases 4–6 ppb after one hour operation. However, poses risk exposing occupants elevated levels O₃, it creates high (> 25 ppb) near lamp. Moreover, ventilation plays crucial role determining contaminants. Increasing rate from 0.7 h^{− 1} 4 pathogen concentrations 90%. caution is warranted could also lead indoors, particularly outdoor conditions.

Язык: Английский

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Correction to “Indoor Air Quality Implications of Germicidal 222 nm Light”

Environmental Science & Technology, Год журнала: 2024, Номер 58(26), С. 11864 - 11864

Опубликована: Июнь 21, 2024

ADVERTISEMENT RETURN TO ARTICLES ASAPPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to "Indoor Air Quality Implications of Germicidal 222 nm Light"Victoria P. Barber*Victoria Barber*Email: [email protected]More by Victoria Barberhttps://orcid.org/0000-0003-4543-4657, Matthew B. GossMatthew GossMore Gosshttps://orcid.org/0000-0002-2688-5463, Lesly J. Franco DeloyaLesly DeloyaMore Deloya, Lexy N. LeMarLexy LeMarMore LeMar, Yaowei LiYaowei LiMore Lihttps://orcid.org/0000-0003-0725-6108, Erik HelstromErik HelstromMore Helstrom, Manjula CanagaratnaManjula CanagaratnaMore Canagaratna, Frank KeutschFrank KeutschMore Keutschhttps://orcid.org/0000-0002-1442-6200, and Jesse H. Kroll*Jesse Kroll*Email: Krollhttps://orcid.org/0000-0002-6275-521XCite this: Environ. Sci. Technol. 2024, XXXX, XXX, XXX-XXXPublication Date (Web):June 21, 2024Publication History Received13 June 2024Published online21 2024https://pubs.acs.org/doi/10.1021/acs.est.4c05960https://doi.org/10.1021/acs.est.4c05960correctionACS Publications© 2024 The Authors. Published American Chemical Society. This publication available under these Terms Use. Request reuse permissions free access through this site. Learn MoreArticle Views-Altmetric-Citations-LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum full text article downloads since November 2008 (both PDF HTML) across all institutions individuals. These metrics regularly updated reflect usage leading up last few days.Citations number other articles citing article, calculated Crossref daily. Find more information about citation counts.The Altmetric Attention Score quantitative measure attention that research has received online. Clicking on donut icon will load page at altmetric.com with additional details score social media presence for given article. how calculated. Share Add toView InAdd Full Text ReferenceAdd Description ExportRISCitationCitation abstractCitation referencesMore Options onFacebookTwitterWechatLinked InRedditEmail (769 KB) Get e-AlertscloseSupporting Info (1)»Supporting Information Supporting e-Alerts

Язык: Английский

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WO3/Pt photocatalyst supported by ceramic filter for indoor air purification under visible light irradiation

Environmental Science Advances, Год журнала: 2024, Номер 3(12), С. 1775 - 1787

Опубликована: Янв. 1, 2024

Household air pollution exposure can lead to various chronic health issues, photocatalytic purification could improve the indoor quality.

Язык: Английский

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