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Distribution of the Fe (II) and Fe (III) dissolved in the interstitial water of the Gulf of Gdansk

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Bialkowska I., Bolalek B. J., Bolalek J.

Oceanological Studies

2000

vol. 29

issue 4

43-54

A sediment environment of the Gulf of Gdansk is reductive to the iron (III). The iron (II) is a dominant form of this element in the interstitial water, and a total reduction takes place in a sediment layer of up to 20 cm. A speciation of a dissolved iron as well as a total iron concentration is related to types of sediments in a measuring point. It could also be noted that a concentration of each iron form in the above-bottom water layer is much lower than in the interstitial water of the top sediment layer. To illustrate redox conditions in the environment a ratio Fe(III) : Fe(II) was introduced. In the waters, the iron (III) dominates and the Fe(III) : Fe(II) ratio is much higher than the relevant value in the interstitial water.

Interdependence between phosphorus forms in sediments and iron in interstitial waters in the Gulf of Gdansk

100%

Matuszewska K., Bialkowska I., Bolalek J.

Oceanological and Hydrobiological Studies

2003

issue 1

5-14

The content of various phosphorus forms in sediments and the content of iron in interstitial waters were measured in sediment samples collected in the Gulf of Gdansk in March 2001. The studies showed that the greatest amounts of the total phosphorus and total dissolved iron were present in the uppermost sediment layer, and their respective concentrations ranged from 203,99 mumol?g-1d.w. to 1894,02 mumol?g-1d.w., and from 0,02 mumol?dm-3 to 4,68 mumol?dm-3. The contents of these parameters were directly connected with the type of sediment - the greatest concentrations were measured in fine sediments. The analysis of multiple correlation coefficients demonstrated that in over 90% of cases the concentration of phosphorus bound with iron depended on: the sediment type and its humidity, the content of organic matter, and the concentration of the total iron dissolved in the interstitial waters.

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Search results

Distribution of the Fe (II) and Fe (III) dissolved in the interstitial water of the Gulf of Gdansk

Interdependence between phosphorus forms in sediments and iron in interstitial waters in the Gulf of Gdansk