RT Journal Article T1 Size distribution and chemical composition of metalliferous stack emissions in the San Roque petroleum refinery complex, southern Spain A1 Sánchez de la Campa Verdona, Ana María A1 Moreno, T. A1 Rosa Díaz, Jesús de la A1 Alastuey Urós, José Andrés A1 Querol, X. AB We demonstrate that there is great variation in the size range and chemical composition of metalliferous particulate matter (PM) present within petrochemical complex chimney stacks. Cascade impactor PM samples from seven size ranges (17, 14, 5, 2.5, 1.3, 0.67, and 0.33 mu m) were collected from inside stacks within the San Roque complex which includes the largest oil refinery in Spain. SEM analysis demonstrates the PM to be mostly carbonaceous and aluminous fly ash and abundant fine metalliferous particles. The metals with the most extreme concentrations averaged over all size ranges were Ni (up to 3295 mu g m(-3)), Cr (962 mu g m(-3)), V (638 mu g m(-3)), Zn (225 mu g m(-3)), Mo (91 mu g m(-3)), La (865 mu g m(-3)), and Co (94 mu g m(-3)). Most metal PM are strongly concentrated into the finest fraction (<0.33 mu m), although emissions from some processes, such as purified terephthallic acid (PTA) production, show coarser size ranges. The fluid catalytic cracking stack shows high concentrations of La (>200 mu g m(-3) in PM(0.67-1.3)). Cr and Ni in a relatively coarse PM size range (0.7-14 mu m). Our unique database, directly sampled from chimney stacks, confirms that oil refinery complexes such as San Roque are a potent source of a variety of fine, deeply inhalable metalliferous atmospheric PM emissions PB Elsevier SN 0304-3894 YR 2011 FD 2011-06 LK http://hdl.handle.net/10272/6340 UL http://hdl.handle.net/10272/6340 LA eng NO Alastuey Urós, J.A., Rosa Díaz, J. de la, Moreno, T., Sánchez de la Campa Verdona, A.M.: "Size distribution and chemical composition of metalliferous stack emissions in the San Roque petroleum refinery complex, southern Spain". Journal of Hazardous Materials. Vol. 190, n. 1-3, pág. 713-722 (2011). ISSN 0304-3894 NO This study was supported by the Department of the Environment and the Department of Innovation, Science and Enterprise (project RNM2007-02729) of the Autonomous Government of Andalusia, and Projects GRACCIE-CSD2007 of the Spanish Ministry of Science and Innovation. The authors are indebted to Juan Contreras, Francisca Godoy and Antonio Lozano of the Department of Air Quality in the Environmental Office of Andalusia Government for their collaboration with this study. Thanks are due to Wes Gibbons for his revision of the manuscript. DS Repositorio Institucional de la Universidad de Huelva RD 15 jun 2026