Vertical distribution of al, cu, fe and zn in the soil salt marshes of the Sado estuary, Portugal
- 1 October 1984
- journal article
- research article
- Published by Informa UK Limited in International Journal of Environmental Studies
- Vol. 23 (3-4), 249-253
- https://doi.org/10.1080/00207238408710160
Abstract
The vertical distribution of Al, Cu, Fe and Zn in the soil salt marsh of the river Sado estuary was studied. The results obtained by an acid digestion procedure, indicate that the mean values at the first sampling point (near the Atlantic Ocean and very close to a populous city) are lower when compared with those found at the other Stations (approximately 8.0 and 20.0 km upstream), where they are very similar. These findings are related to the different nature of the soil matrix (essentially sand at Station 1 and silt‐clay at Station 2 and 3), and the reduced availability of the sandy fraction to bind trace metals. A correlation analysis for all the metals in different soil cores indicate that the correlation values at Station 1 are, generally, not significant at a 0.05 significance level.Keywords
This publication has 12 references indexed in Scilit:
- Adsorption and desorption of heavy metals in bottom mud of urban riversWater Research, 1982
- Trace metals in sediments from the Ligurian Coast, ItalyMarine Pollution Bulletin, 1982
- The distribution of organic material and trace metals in sediments from the River Liffey Estuary, DublinEstuarine and Coastal Marine Science, 1979
- A study of indication of trace metal pollution of marine areas by analysis of salt marsh soilsMarine Environmental Research, 1979
- Heavy metals in the sediments of Foundry Cove, Cold Spring, New YorkEnvironmental Science & Technology, 1978
- Evaluation of extraction techniques for the determination of metals in aquatic sedimentsThe Analyst, 1976
- Trace elements in sediments from the lower Severn Estuary and Bristol ChannelMarine Pollution Bulletin, 1975
- Diagenesis, metals and pollution in estuariesMarine Pollution Bulletin, 1975
- Export of lead from salt marshesMarine Pollution Bulletin, 1974
- Trace metals in Solway Firth sedimentsMarine Pollution Bulletin, 1973