Concentration of airbone trace metals in a bus station with a high heavy-duty diesel fraction

Journal of the Brazilian Chemical Society

Centro Federal de Educação Tecnológica de Química de Nilópolis, Rio de Janeiro, Brazil¹  Arbilla, Graciela¹  Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil¹  Quiterio, Simone Lorena¹  Bellido, Alfredo Victor¹  Universidade Federal Fluminense Prédio da Química, Niterói, Brazil¹  Loyola, Josiane¹  EMBRAPA, Rio de Janeiro, Brazil¹  Escaleira, Viviane¹ 

关键词: airborne particulate matter;    PM10;    trace metal;    diesel emissions;   

DOI  :  10.1590/S0103-50532009000700020

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

Total particulate matter (TSP) and PM10 samples were collected in a bus station, in the period of August 2006 to February 2007. Buses are the only significant emission sources in this area once light duty vehicles represent about 1-2% of total flux and no other activities are developed in the location. Concentrations of metals in the samples were determined by inductively coupled plasma optical emission spectroscopy (ICP-OES). Ca, Mg, Fe and Al were the most abundant elements and accounted for about 50.1%, 24.2%, 6.5% and 18.7% of the total metal content. Co, Ni, Cd, Cr and Pb were under detection limits except for a few samples. Calculated enrichment factors show that Zn and Cu are probably due to fuel and oil composition. Ca, Mg and Al may be attributed to dust resuspension while Fe may be due to both dust resuspension and contribution of vehicles.

【 授权许可】

Unknown