Air pollution at an urban traffic tunnel in Lisbon, Portugal—an INAA study
作者： M. Almeida-Silva , N. Canha , M.C. Freitas , H.M Dung , I. Dionísio
DOI: 10.1016/J.APRADISO.2011.01.014
关键词:
摘要: In this study, the results of chemical concentrations inside and outside a Lisbon (Portugal) traffic tunnel were compared, during one week. They obtained by Instrumental Neutron Activation Analysis (INAA). The values largely exceed Air Ambient legislated Pearson Correlations Coefficients point out to soil re-suspension/dispersed road dust (As, Ce, Eu, Hf, Fe, Mo, Sc, Zn), traffic-markers (Ba, Cr), tire wear (Cr, break (Fe, Zn, Ba, Cu, Sb), exhaust motor oil (Zn) sea-spray (Br, Na). On all days these elements more enriched than outside; significant statistical differences found for Co (p=0.005), Br (p=0.008), Zn (p=0.01) Sb while enrichment factors As Sc are statistically identical. highest As, Br, Sb, both tunnel.
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