Effect of relative humidity on hydrogen peroxide production in water droplets
Mist is generated by ultrasonic cavitation of water (Fisher Biograde, pH 5.5–6.5) at room temperature (20–25 °C) in open air with nearly constant temperature (22–25 °C) but varying relative humidity (RH; 24–52%) over the course of many months. Water droplets in the mist are initially about 7 μm in d...
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| Format: | Article |
| Language: | English |
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Cambridge University Press
2021-01-01
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| Series: | QRB Discovery |
| Subjects: | |
| Online Access: | https://www.cambridge.org/core/product/identifier/S2633289221000065/type/journal_article |
| _version_ | 1811155770336608256 |
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| author | Maria T. Dulay Carlos Alberto Huerta-Aguilar Christian F. Chamberlayne Richard N. Zare Adriaan Davidse Sinisa Vukovic |
| author_facet | Maria T. Dulay Carlos Alberto Huerta-Aguilar Christian F. Chamberlayne Richard N. Zare Adriaan Davidse Sinisa Vukovic |
| author_sort | Maria T. Dulay |
| collection | DOAJ |
| description | Mist is generated by ultrasonic cavitation of water (Fisher Biograde, pH 5.5–6.5) at room temperature (20–25 °C) in open air with nearly constant temperature (22–25 °C) but varying relative humidity (RH; 24–52%) over the course of many months. Water droplets in the mist are initially about 7 μm in diameter at about 50% RH. They are collected, and the concentration of hydrogen peroxide (H2O2) is measured using commercial peroxide test strips and by bromothymol blue oxidation. The quantification method is based on the Fenton chemistry of dye degradation to determine the oxidation capacity of water samples that have been treated by ultrasonication. It is found that the hydrogen peroxide concentration varies nearly linearly with RH over the range studied, reaching a low of 2 parts per million (ppm) at 24% RH and a high of 6 ppm at 52% RH. Some possible public health implications concerning the transmission of respiratory viral infections are suggested for this threefold change in H2O2 concentration with RH. |
| first_indexed | 2024-04-10T04:39:08Z |
| format | Article |
| id | doaj.art-e8039f4e8b574be389fb3bf43bda7f7c |
| institution | Directory Open Access Journal |
| issn | 2633-2892 |
| language | English |
| last_indexed | 2024-04-10T04:39:08Z |
| publishDate | 2021-01-01 |
| publisher | Cambridge University Press |
| record_format | Article |
| series | QRB Discovery |
| spelling | doaj.art-e8039f4e8b574be389fb3bf43bda7f7c2023-03-09T12:43:33ZengCambridge University PressQRB Discovery2633-28922021-01-01210.1017/qrd.2021.6Effect of relative humidity on hydrogen peroxide production in water dropletsMaria T. Dulay0https://orcid.org/0000-0002-4678-3480Carlos Alberto Huerta-Aguilar1https://orcid.org/0000-0001-9274-5330Christian F. Chamberlayne2https://orcid.org/0000-0001-8589-5074Richard N. Zare3https://orcid.org/0000-0001-5266-4253Adriaan Davidse4https://orcid.org/0000-0001-7335-0333Sinisa Vukovic5https://orcid.org/0000-0002-7682-0705Department of Chemistry, Stanford University, Stanford, CA 94305, USADepartment of Chemistry, Stanford University, Stanford, CA 94305, USADepartment of Chemistry, Stanford University, Stanford, CA 94305, USADepartment of Chemistry, Stanford University, Stanford, CA 94305, USAPO Box 93167 Headon PO Burlington, ON L7M 4A3, CanadaMineRP, 333 Bay Street, Toronto, ON M5H 2T6, CanadaMist is generated by ultrasonic cavitation of water (Fisher Biograde, pH 5.5–6.5) at room temperature (20–25 °C) in open air with nearly constant temperature (22–25 °C) but varying relative humidity (RH; 24–52%) over the course of many months. Water droplets in the mist are initially about 7 μm in diameter at about 50% RH. They are collected, and the concentration of hydrogen peroxide (H2O2) is measured using commercial peroxide test strips and by bromothymol blue oxidation. The quantification method is based on the Fenton chemistry of dye degradation to determine the oxidation capacity of water samples that have been treated by ultrasonication. It is found that the hydrogen peroxide concentration varies nearly linearly with RH over the range studied, reaching a low of 2 parts per million (ppm) at 24% RH and a high of 6 ppm at 52% RH. Some possible public health implications concerning the transmission of respiratory viral infections are suggested for this threefold change in H2O2 concentration with RH.https://www.cambridge.org/core/product/identifier/S2633289221000065/type/journal_articleH2O2 quantificationhydrogen peroxidemicrodroplet chemistryreactive oxygen speciesrelative humidityrespiratory viral infections |
| spellingShingle | Maria T. Dulay Carlos Alberto Huerta-Aguilar Christian F. Chamberlayne Richard N. Zare Adriaan Davidse Sinisa Vukovic Effect of relative humidity on hydrogen peroxide production in water droplets QRB Discovery H2O2 quantification hydrogen peroxide microdroplet chemistry reactive oxygen species relative humidity respiratory viral infections |
| title | Effect of relative humidity on hydrogen peroxide production in water droplets |
| title_full | Effect of relative humidity on hydrogen peroxide production in water droplets |
| title_fullStr | Effect of relative humidity on hydrogen peroxide production in water droplets |
| title_full_unstemmed | Effect of relative humidity on hydrogen peroxide production in water droplets |
| title_short | Effect of relative humidity on hydrogen peroxide production in water droplets |
| title_sort | effect of relative humidity on hydrogen peroxide production in water droplets |
| topic | H2O2 quantification hydrogen peroxide microdroplet chemistry reactive oxygen species relative humidity respiratory viral infections |
| url | https://www.cambridge.org/core/product/identifier/S2633289221000065/type/journal_article |
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