MAJOR IONS AND TRACE METAL COMPOSITION OF BULK PRECIPITATION COLLECTED AT A SUBURBAN AREA: COMPARISON OF TWO DEPOSITION COLLECTORS

摘要

Majorions and trace metals concentrations of bulk precipitation collected at a suburban area of Northwest of Spain were investigated by using a sedimentary particles sampler and a tipping bucket rain gauge collectors. Bulk precipitation samples were analysed for pH, electro-conductivity, and concentrations of major ions and trace metals. Results achieved using both collectors were compared to know the possibility of indistinguishable use of both collectors in deposition networks. Statistical analysis (analysis of variance ANOVA, multiple range test and regression analysis) of rainfall amount and major ions and trace metals concentrations achieved by using both collectors was performed. Although some significant seasonal differences were observed for Ba, Co and Zn concentrations, ANOVA multiple range tests revealed no significant difference (p < 0.05) when using both collectors. Thus, sedimentary particles sampler and tipping bucket rain gauge collectors can be used interchangeably in deposition networks.