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Variations of heavy metals in water, sediments, and biota from the delta of ebro river, Spain

Variations of heavy metals in water, sediments, and biota from the delta of ebro river, Spain Abstract Cadmium, chromium, copper, lead, and zinc were measured in water, sediments, and biota [algae (Ulva lactuca) and molluscs (Cerastoderma edule and Tellinella pulchella)] of the two bays from the Delta of Ebro river (in southeastern Catalonia, Spain), to determine if concentrations were elevated due to pollution by a variety of agricultural and industrial activities. The effect of temperature (seasonal variation) and the influence of depth on the variation of metal levels were assessed. Metal concentrations were determined by atomic absorption spectrophotometry or by inductively coupled plasma spectrometry. As expected, most metals accumulated mainly in sediments and molluscs. A correlation study (Pearson) between the different elements showed significant differences for lead‐cadmium and copper‐chromium in algae, zinc‐chromium in sediments, and copper‐chromium in water. Metal concentrations found in sediments, water, and molluscs were quite similar at 10 °C and 30 °C, whereas the concentrations of these metals in samples of algae collected in summer were higher than those found in samples collected in winter. The levels of cadmium, copper, lead, and zinc found in this study were similar or lower than corresponding data reported from other areas, while chromium levels were about the same or higher than those found in surveys elsewhere. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology Taylor & Francis

Variations of heavy metals in water, sediments, and biota from the delta of ebro river, Spain

Variations of heavy metals in water, sediments, and biota from the delta of ebro river, Spain


Abstract

Abstract Cadmium, chromium, copper, lead, and zinc were measured in water, sediments, and biota [algae (Ulva lactuca) and molluscs (Cerastoderma edule and Tellinella pulchella)] of the two bays from the Delta of Ebro river (in southeastern Catalonia, Spain), to determine if concentrations were elevated due to pollution by a variety of agricultural and industrial activities. The effect of temperature (seasonal variation) and the influence of depth on the variation of metal levels were assessed. Metal concentrations were determined by atomic absorption spectrophotometry or by inductively coupled plasma spectrometry. As expected, most metals accumulated mainly in sediments and molluscs. A correlation study (Pearson) between the different elements showed significant differences for lead‐cadmium and copper‐chromium in algae, zinc‐chromium in sediments, and copper‐chromium in water. Metal concentrations found in sediments, water, and molluscs were quite similar at 10 °C and 30 °C, whereas the concentrations of these metals in samples of algae collected in summer were higher than those found in samples collected in winter. The levels of cadmium, copper, lead, and zinc found in this study were similar or lower than corresponding data reported from other areas, while chromium levels were about the same or higher than those found in surveys elsewhere.

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References (25)

Publisher
Taylor & Francis
Copyright
Copyright Taylor & Francis Group, LLC
ISSN
1077-1204
DOI
10.1080/10934529509376269
Publisher site
See Article on Publisher Site

Abstract

Abstract Cadmium, chromium, copper, lead, and zinc were measured in water, sediments, and biota [algae (Ulva lactuca) and molluscs (Cerastoderma edule and Tellinella pulchella)] of the two bays from the Delta of Ebro river (in southeastern Catalonia, Spain), to determine if concentrations were elevated due to pollution by a variety of agricultural and industrial activities. The effect of temperature (seasonal variation) and the influence of depth on the variation of metal levels were assessed. Metal concentrations were determined by atomic absorption spectrophotometry or by inductively coupled plasma spectrometry. As expected, most metals accumulated mainly in sediments and molluscs. A correlation study (Pearson) between the different elements showed significant differences for lead‐cadmium and copper‐chromium in algae, zinc‐chromium in sediments, and copper‐chromium in water. Metal concentrations found in sediments, water, and molluscs were quite similar at 10 °C and 30 °C, whereas the concentrations of these metals in samples of algae collected in summer were higher than those found in samples collected in winter. The levels of cadmium, copper, lead, and zinc found in this study were similar or lower than corresponding data reported from other areas, while chromium levels were about the same or higher than those found in surveys elsewhere.

Journal

Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and ToxicologyTaylor & Francis

Published: Jul 1, 1995

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