Article

Response of bulk deposition to changes in industrial activities in a mediterranean urban region

Journal ar
Fresenius Environmental Bulletin
  • Volumen: 18
  • Número: 5 B
  • Fecha: 10 August 2009
  • Páginas: 816-823
  • ISSN: 10184619
  • Source Type: Journal
  • Document Type: Article
Bulk deposition samples were collected monthly at six sampling points in the highly industrialized city of Cartagena, Mediterranean coast of Spain, during a period of 13 years. The study has focused particularly on the effects on dustfall composition caused by the end of two industrial activities, a lead smelter and a fertilizers plant which shut down in March of 1992 and December of 2001 respectively. Both factories were located within the urban area. This fact meant an enormous impact on the population. Not only because of the pollutant concentration released by such activities but on people's perception. The detailed observation of the results stresses the influence that these factories had on the air quality over this period of time. This study was initiated in 1991, before the facts described, and finished in year 2003, allowing us to observe the variation of deposit concentration. The samples were obtained following the protocol of the British Standard Norm 1747, which establishes the analytical and valuation techniques for chemical pollutants present in the atmosphere. In this paper the results of total deposition weight, water-soluble and water-insoluble fractions and pH, from 1991 to 2003, are presented. During the study period the aerosol deposit has suffered a significant decrease, and the pH value of the soluble fraction has increased. These changes are related with the cease of the industrial activities described. © by PSP Volume 18 - No 5b. 2009.

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