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Conclusions

In this work show the presence of multicomponent aerosols in accumulation sized particles. If we consider only a mean value in volume size distribution value we observe the presence of a second dominant aerosol mode of accumulation sized particles. The source of this second accumulation mode particles in Arica is uncertain, but may be the result of industrial fish activities in this zone and by the effects to transport and manipulation to mines products in the sea port, near to the CIMEL location Two aerosols modes a coarse particle mode having a computed effective radius of 300 nm, and a second aerosol mode of accumulation-sized particles, the accumulation mode peak radius decrease 0.2 m m to 0.15 m m in August 1999, this type of aerosols is related with urban aerosols, for example fuels utilized in urban activity and environmental conditions of temperature, humidity, solar radiation intensity near of the ocean, and cloud cover