Organic Matter in the Bulk Precipitations in Zagreb and Šibenik, Croatia (CROSBI ID 145279)
Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Orlović-Leko, Palma ; Plavšić, Marta ; Bura-Nakić, Elvira ; Kozarac, Zlatica ; Ćosović, Božena
engleski
Organic Matter in the Bulk Precipitations in Zagreb and Šibenik, Croatia
Dissolved organic carbon (DOC), surface active substances (SAS) and copper complexing capacity (CuCC) were studied in bulk precipitations collected periodically from 2003 to 2007 in continental city of Croatia (Zagreb: n=27) and in the city at the Adriatic coast (Šibenik: n=38). DOC concentrations (Zagreb: 0.67 - 4.03 mgC/L with average concentration of 1.93 ± 0.76 mgC/L ; Šibenik: 0.44 - 4.13 mgC/L with average concentration of 1.83 ± 0.83 mgC/L) are similar to those measured in other samples of continental rainwater in the northern hemisphere. The concentrations of SAS in samples from Zagreb ranged from 0.055 to 0.45 eq. T-X-100 mg/L with average concentration of (0.14 ± 0.06) eq. Triton-X-100 mg/L. SAS fractions were of a similar range in Šibenik (0.02 - 0.60 eq. Triton-X-100 mg/L) with an average concentration of 0.11 ± 0.06 eq. Triton-X-100 mg/L. However, the lowest values of SAS (between 0.02 and 0.04 eq. Triton-X-100 mg/L) were observed only in Šibenik (27 %). We have estimated that the higher pH values were responsible for lower surface activity of organic matter in bulk samples from Šibenik. DOC may form complexes that control the transport and solubility of heavy metals in natural water. CuCC measured in Šibenik in the range 0.066 -1.4 μ MCu2+ was in general higher, compared to the one in Zagreb (0.010 - 0.586 μ M Cu 2+) which is the result of biogenically driven organic contribution to the precipitation , especially in the warmer period of the year.
Dissolved Organic Carbon (DOC) ; Surface Active Substances (SAS): Complexing Capacity (CuCC) ; bulk precipitation
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Podaci o izdanju
43 (4)
2009.
805-811
objavljeno
1352-2310
1873-2844
10.1016/j.atmosenv.2008.11.006
Povezanost rada
Geologija, Kemijsko inženjerstvo