{"title":"德里的甲烷浓度","authors":"Pratap Kumar Padhy, C.K Varshney","doi":"10.1016/S1465-9972(00)00005-2","DOIUrl":null,"url":null,"abstract":"<div><p>The ambient levels of methane in the urban environment of Delhi were measured during November 1994–June 1995, at 13 sites varying in anthropogenic activities and traffic density. The methane levels in the ambient urban environment of Delhi varied from 1703 to 9492 ppbv, with an average concentration of 4121<!--> <!-->±<!--> <!-->354 ppbv, exhibiting diurnal and seasonal variation. The likely reasons for the elevated methane level (above the global average of 1737 ppbv) in the urban environment of Delhi and its implications for air qualities have been discussed.</p></div>","PeriodicalId":100235,"journal":{"name":"Chemosphere - Global Change Science","volume":"2 2","pages":"Pages 185-190"},"PeriodicalIF":0.0000,"publicationDate":"2000-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00005-2","citationCount":"21","resultStr":"{\"title\":\"Ambient methane levels in Delhi\",\"authors\":\"Pratap Kumar Padhy, C.K Varshney\",\"doi\":\"10.1016/S1465-9972(00)00005-2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The ambient levels of methane in the urban environment of Delhi were measured during November 1994–June 1995, at 13 sites varying in anthropogenic activities and traffic density. The methane levels in the ambient urban environment of Delhi varied from 1703 to 9492 ppbv, with an average concentration of 4121<!--> <!-->±<!--> <!-->354 ppbv, exhibiting diurnal and seasonal variation. The likely reasons for the elevated methane level (above the global average of 1737 ppbv) in the urban environment of Delhi and its implications for air qualities have been discussed.</p></div>\",\"PeriodicalId\":100235,\"journal\":{\"name\":\"Chemosphere - Global Change Science\",\"volume\":\"2 2\",\"pages\":\"Pages 185-190\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2000-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S1465-9972(00)00005-2\",\"citationCount\":\"21\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemosphere - Global Change Science\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1465997200000052\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemosphere - Global Change Science","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1465997200000052","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The ambient levels of methane in the urban environment of Delhi were measured during November 1994–June 1995, at 13 sites varying in anthropogenic activities and traffic density. The methane levels in the ambient urban environment of Delhi varied from 1703 to 9492 ppbv, with an average concentration of 4121 ± 354 ppbv, exhibiting diurnal and seasonal variation. The likely reasons for the elevated methane level (above the global average of 1737 ppbv) in the urban environment of Delhi and its implications for air qualities have been discussed.
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