Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/45517
DC FieldValueLanguage
dc.contributor.authorLin, Y.C.en_US
dc.contributor.author鄭曼婷zh_TW
dc.contributor.authorCheng, M.T.en_US
dc.contributor.authorTing, W.Y.en_US
dc.contributor.authorYeh, C.R.en_US
dc.date2006zh_TW
dc.date.accessioned2014-06-06T08:15:14Z-
dc.date.available2014-06-06T08:15:14Z-
dc.identifier.issn1352-2310zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/45517-
dc.description.abstractSimultaneous measurements of ambient gaseous species HNO2, HNO3, NH3 and particulate NO3- and NH4+ were carried out during 2002 in the city of Taichung, Taiwan. An annular denuder system (ADS) was used for the measurements. The annual mean concentrations of HNO2, HNO3, NH3, NO3- and NH4+ were 2.9, 1.9, 8.5, 6.0 and 4.6 mu g m(-3), respectively. Daily and seasonal patterns were observed. The concentration of HNO2 was found to be lower during the summer, whereas HNO3 and NH3 displayed higher concentrations. On the other hand, particulate NO3 exhibited significant seasonal variation with lower levels observed in autumn and summer. The average nitrogen conversion ratios (F,,) in the spring and summer were 21%, approximately 1.5 factor higher than those in the autumn and winter. Moreover, the photochemical reaction played an important role for the oxidation of NO2 to nitrate since F-n was well correlated with 03 during daytime in all seasons. During nighttime, F,, correlated well with relative humidity. These results suggest that the factors affecting nitrogen conversion ratio are different during daytime and nighttime. The present findings are compared with similar measurements worldwide, and the prevailing mechanisms are discussed. (c) 2006 Elsevier Ltd. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationAtmospheric Environmenten_US
dc.relation.ispartofseriesAtmospheric Environment, Volume 40, Issue 25, Page(s) 4725-4733.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.atmosenv.2006.04.037en_US
dc.subjectacidic gasesen_US
dc.subjectammonium nitrateen_US
dc.subjectnitrogen conversion ratioen_US
dc.subjectannularen_US
dc.subjectdenuder systemen_US
dc.subjectdaytimeen_US
dc.subjectnighttimeen_US
dc.subjectacidic air-pollutantsen_US
dc.subjectnitric-aciden_US
dc.subjectnew-yorken_US
dc.subjectsulfateen_US
dc.subjectaerosolen_US
dc.subjectregionen_US
dc.subjectgreeceen_US
dc.subjectpm2.5en_US
dc.subjectohen_US
dc.titleCharacteristics of gaseous HNO2, HNO3, NH3 and particulate ammonium nitrate in an urban city of Central Taiwanen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.atmosenv.2006.04.037zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.languageiso639-1en_US-
item.grantfulltextnone-
item.cerifentitytypePublications-
item.openairetypeJournal Article-
item.fulltextno fulltext-
Appears in Collections:環境工程學系所
Show simple item record
 

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.