Influence of Outdoor Oxidant on the Indoor Air Concentrations of Formic Acid
Secondary emission products generated through chemical reactions become a recent concern in relation to indoor air quality. We have focused on formic acid (HCOOH) whose generation mechanism in indoor air has been unknown. In this study, we examined influence of oxidant on the indoor air concentratio...
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| Veröffentlicht in: | Journal of Environmental Chemistry 2010, Vol.20(2), pp.113-119 |
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| container_title | Journal of Environmental Chemistry |
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| creator | SEKINE, Yoshika USUKI, Hidetoshi MIYASHIRO, Keisuke OZANO, Takahiro |
| description | Secondary emission products generated through chemical reactions become a recent concern in relation to indoor air quality. We have focused on formic acid (HCOOH) whose generation mechanism in indoor air has been unknown. In this study, we examined influence of oxidant on the indoor air concentrations of HCOOH and emission process of HCOOH by both laboratory experiments and field measurements. Firstly, emission fluxes of HCHO and HCOOH from plywood were determined using a small bowl-type stainless chamber. The emission flux of HCOOH increased with those of HCHO under ambient air containing oxidant. While the oxidant was removed in the chamber, HCOOH significantly emitted with NO2 at the chamber outlet. We then concluded HCOOH is a product of the gas phase reaction between HCHO, NO2 and O3. Field measurements conducted at a newly-build detached house supported the conclusion as that indoor concentrations of HCOOH increased with an increase in concentrations of the oxidant introduced from outdoor by air ventilation. |
| doi_str_mv | 10.5985/jec.20.113 |
| format | Article |
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We have focused on formic acid (HCOOH) whose generation mechanism in indoor air has been unknown. In this study, we examined influence of oxidant on the indoor air concentrations of HCOOH and emission process of HCOOH by both laboratory experiments and field measurements. Firstly, emission fluxes of HCHO and HCOOH from plywood were determined using a small bowl-type stainless chamber. The emission flux of HCOOH increased with those of HCHO under ambient air containing oxidant. While the oxidant was removed in the chamber, HCOOH significantly emitted with NO2 at the chamber outlet. We then concluded HCOOH is a product of the gas phase reaction between HCHO, NO2 and O3. Field measurements conducted at a newly-build detached house supported the conclusion as that indoor concentrations of HCOOH increased with an increase in concentrations of the oxidant introduced from outdoor by air ventilation.</description><identifier>ISSN: 0917-2408</identifier><identifier>EISSN: 1882-5818</identifier><identifier>DOI: 10.5985/jec.20.113</identifier><language>eng</language><publisher>Japan Society for Environmental Chemistry</publisher><subject>formaldehyde ; formic acid ; indoor air chemistry ; oxidant ; Sick House Syndrome</subject><ispartof>Journal of Environmental Chemistry, 2010, Vol.20(2), pp.113-119</ispartof><rights>2010 Japan Society for Environmental Chemistry</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c1593-6dc8015b5b96bb7a8a35ff5f9f3d87aa8ad3a49696fac6119ea2738c4156e35c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,778,782,1879,4012,27910,27911,27912</link.rule.ids></links><search><creatorcontrib>SEKINE, Yoshika</creatorcontrib><creatorcontrib>USUKI, Hidetoshi</creatorcontrib><creatorcontrib>MIYASHIRO, Keisuke</creatorcontrib><creatorcontrib>OZANO, Takahiro</creatorcontrib><title>Influence of Outdoor Oxidant on the Indoor Air Concentrations of Formic Acid</title><title>Journal of Environmental Chemistry</title><addtitle>JEC</addtitle><description>Secondary emission products generated through chemical reactions become a recent concern in relation to indoor air quality. We have focused on formic acid (HCOOH) whose generation mechanism in indoor air has been unknown. In this study, we examined influence of oxidant on the indoor air concentrations of HCOOH and emission process of HCOOH by both laboratory experiments and field measurements. Firstly, emission fluxes of HCHO and HCOOH from plywood were determined using a small bowl-type stainless chamber. The emission flux of HCOOH increased with those of HCHO under ambient air containing oxidant. While the oxidant was removed in the chamber, HCOOH significantly emitted with NO2 at the chamber outlet. We then concluded HCOOH is a product of the gas phase reaction between HCHO, NO2 and O3. Field measurements conducted at a newly-build detached house supported the conclusion as that indoor concentrations of HCOOH increased with an increase in concentrations of the oxidant introduced from outdoor by air ventilation.</description><subject>formaldehyde</subject><subject>formic acid</subject><subject>indoor air chemistry</subject><subject>oxidant</subject><subject>Sick House Syndrome</subject><issn>0917-2408</issn><issn>1882-5818</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><recordid>eNo9kE1LAzEQhoMouNRe_AU5C7vmY5NNTlKK1UKhFz2HbDaxKdtEkhT037u12ssMM_O8c3gAuMeoYVKwx701DUENxvQKVFgIUjOBxTWokMRdTVokbsE8Z98jRFrRcsorsFkHNx5tMBZGB7fHMsSY4PbLDzoUGAMsOwvX4Xe78Aku44SGknTxMeRTZhXTwRu4MH64AzdOj9nO__oMvK-e35av9Wb7sl4uNrXBTNKaD0YgzHrWS973nRaaMueYk44OotPTPFDdSi6504ZjLK0mHRWmxYxbygydgYfzX5Nizsk69Zn8QadvhZE6qVCTCkWQmlRM8NMZ3ueiP-wF1al4M9p_lJzLlLhczE4nZQP9AdZEaD8</recordid><startdate>2010</startdate><enddate>2010</enddate><creator>SEKINE, Yoshika</creator><creator>USUKI, Hidetoshi</creator><creator>MIYASHIRO, Keisuke</creator><creator>OZANO, Takahiro</creator><general>Japan Society for Environmental Chemistry</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>2010</creationdate><title>Influence of Outdoor Oxidant on the Indoor Air Concentrations of Formic Acid</title><author>SEKINE, Yoshika ; USUKI, Hidetoshi ; MIYASHIRO, Keisuke ; OZANO, Takahiro</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c1593-6dc8015b5b96bb7a8a35ff5f9f3d87aa8ad3a49696fac6119ea2738c4156e35c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>formaldehyde</topic><topic>formic acid</topic><topic>indoor air chemistry</topic><topic>oxidant</topic><topic>Sick House Syndrome</topic><toplevel>online_resources</toplevel><creatorcontrib>SEKINE, Yoshika</creatorcontrib><creatorcontrib>USUKI, Hidetoshi</creatorcontrib><creatorcontrib>MIYASHIRO, Keisuke</creatorcontrib><creatorcontrib>OZANO, Takahiro</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of Environmental Chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>SEKINE, Yoshika</au><au>USUKI, Hidetoshi</au><au>MIYASHIRO, Keisuke</au><au>OZANO, Takahiro</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Influence of Outdoor Oxidant on the Indoor Air Concentrations of Formic Acid</atitle><jtitle>Journal of Environmental Chemistry</jtitle><addtitle>JEC</addtitle><date>2010</date><risdate>2010</risdate><volume>20</volume><issue>2</issue><spage>113</spage><epage>119</epage><pages>113-119</pages><issn>0917-2408</issn><eissn>1882-5818</eissn><abstract>Secondary emission products generated through chemical reactions become a recent concern in relation to indoor air quality. We have focused on formic acid (HCOOH) whose generation mechanism in indoor air has been unknown. In this study, we examined influence of oxidant on the indoor air concentrations of HCOOH and emission process of HCOOH by both laboratory experiments and field measurements. Firstly, emission fluxes of HCHO and HCOOH from plywood were determined using a small bowl-type stainless chamber. The emission flux of HCOOH increased with those of HCHO under ambient air containing oxidant. While the oxidant was removed in the chamber, HCOOH significantly emitted with NO2 at the chamber outlet. We then concluded HCOOH is a product of the gas phase reaction between HCHO, NO2 and O3. Field measurements conducted at a newly-build detached house supported the conclusion as that indoor concentrations of HCOOH increased with an increase in concentrations of the oxidant introduced from outdoor by air ventilation.</abstract><pub>Japan Society for Environmental Chemistry</pub><doi>10.5985/jec.20.113</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
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| ispartof | Journal of Environmental Chemistry, 2010, Vol.20(2), pp.113-119 |
| issn | 0917-2408 1882-5818 |
| language | eng |
| recordid | cdi_crossref_primary_10_5985_jec_20_113 |
| source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; J-STAGE (Japan Science & Technology Information Aggregator, Electronic) Freely Available Titles - Japanese |
| subjects | formaldehyde formic acid indoor air chemistry oxidant Sick House Syndrome |
| title | Influence of Outdoor Oxidant on the Indoor Air Concentrations of Formic Acid |
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