『Abstract
The objective of this work is to analyze Fe, Mn, Cr, Cd, Cu,
Pb, and Zn distributions in the water column in terms of total,
dissolved, and particulate concentrations in the Salado River
(Santa Fe - Argentina); their relationship with total, dissolved
and suspended solids; and the impact of two pollution sources
on the watercourse: a stream that collects domestic and industrial
wastewater discharges of the region and a direct discharge that
releases urban and industrial effluents to the river.
Water samples obtained from 5 surveys were analyzed. The Salado
River transported a load of heavy metals that ranged from 700
g/s to 2200 g/s of Fe, 20 g/s to 60 g/s of Mn and 1 g/s to 3 g/s
of Cr. Results show that most metals were found in particulate
form, that the metal input from the direct discharge may be significant
at low water levels, whereas a lesser impact was produced by the
stream, and that both pollution sources were negligible at high
water levels.
Keywords: heavy metal; sediment; partition; salado river (Santa
Fe)』
1. Introduction
2. Materials and methods
2.1. Fieldwork
2.2. Laboratory tests
2.3. Determination of partition parameters
3. Results and discussion
3.1. Total, dissolved and suspended solid analysis
3.2. Spatio-temporal distribution of total heavy metal concentrations
3.3. Fe, Mn, Cr mass flow calculation
3.4. Partition of metals in dissolved and particulate phases
3.5. Correlation between partition parameters and solid concentrations
4. Conclusions
Acknowledgement
Appendix
References