{"title":"开罗大气中铅的空间和季节变化","authors":"Esmat A. Ali, M.M. Nasralla, A.A. Shakour","doi":"10.1016/0143-148X(86)90024-8","DOIUrl":null,"url":null,"abstract":"<div><p>Spatial and seasonal variation of lead concentrations were investigated in the Cairo atmosphere. It was found that the annual mean lead concentrations in the central and densely populated parts of Cairo exceeded the 2μm<sup>−3</sup> recommended limit. In sharp contrast to data for European cities, summer lead concentrations were higher than those detected during winter. Calculated settling velocities of lead particles show that in the central urban district lead particles can stay suspended for long periods, and so are available for inhalation, as compared with particles found in the atmosphere of other parts of the city.</p></div>","PeriodicalId":100484,"journal":{"name":"Environmental Pollution Series B, Chemical and Physical","volume":"11 3","pages":"Pages 205-210"},"PeriodicalIF":0.0000,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0143-148X(86)90024-8","citationCount":"13","resultStr":"{\"title\":\"Spatial and seasonal variation of lead in Cairo atmosphere\",\"authors\":\"Esmat A. Ali, M.M. Nasralla, A.A. Shakour\",\"doi\":\"10.1016/0143-148X(86)90024-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Spatial and seasonal variation of lead concentrations were investigated in the Cairo atmosphere. It was found that the annual mean lead concentrations in the central and densely populated parts of Cairo exceeded the 2μm<sup>−3</sup> recommended limit. In sharp contrast to data for European cities, summer lead concentrations were higher than those detected during winter. Calculated settling velocities of lead particles show that in the central urban district lead particles can stay suspended for long periods, and so are available for inhalation, as compared with particles found in the atmosphere of other parts of the city.</p></div>\",\"PeriodicalId\":100484,\"journal\":{\"name\":\"Environmental Pollution Series B, Chemical and Physical\",\"volume\":\"11 3\",\"pages\":\"Pages 205-210\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1986-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0143-148X(86)90024-8\",\"citationCount\":\"13\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Pollution Series B, Chemical and Physical\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0143148X86900248\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Pollution Series B, Chemical and Physical","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0143148X86900248","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Spatial and seasonal variation of lead in Cairo atmosphere
Spatial and seasonal variation of lead concentrations were investigated in the Cairo atmosphere. It was found that the annual mean lead concentrations in the central and densely populated parts of Cairo exceeded the 2μm−3 recommended limit. In sharp contrast to data for European cities, summer lead concentrations were higher than those detected during winter. Calculated settling velocities of lead particles show that in the central urban district lead particles can stay suspended for long periods, and so are available for inhalation, as compared with particles found in the atmosphere of other parts of the city.
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