2005–2014 trends of PM10 source contributions in an industrialized area of southern Spain

Particulate matter with a diameter of 10 μm or less (PM10) using receptor modelling was determined at an urban (La Linea, LL) and an industrial area (Puente Mayorga, PMY) in Southern Spain with samples collected during 2005–2014. The concentrations of PM10 had been decreasing at both sites in three distinctive periods: 1) the initial PM10 levels approached or exceeded the Spain and EU PM10 annual guidelines of 40 μg/m3 during 2005–2007 at LL and 2005–2009 at PMY; 2) then PM10 dropped by 25%–∼30 μg/m3 during 2008–2011 at LL and during 2010–2011 at PMY; 3) since 2012, the PM10 concentrations gradually decreased to