DIEL VARIATIONS OF DISSOLVED AMMONIA AND PHOSPHATE IN ESTUARINE SEDIMENT PORE WATER

DIEL VARIATIONS OF DISSOLVED AMMONIA AND PHOSPHATE IN ESTUARINE SEDIMENT PORE WATER

Variations of dissolved ammonia and phosphate in pore water at depths of 2 to 40 cm were examined every 3 hrfor 27 hr. Eh values were consistently negative and pH ranged from 7.2 to 8.0. Ammonium and phosphate were greatest at 10 cm and both steadily decreased to 40 cm. Maximum ammonium concentratio...

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Veröffentlicht in:Florida scientist 1983-01, Vol.46 (3/4), p.407-414
Hauptverfasser: Montgomery, John R., Zimmermann, Carl, Peterson, Gary, Price, Mary
Format: Artikel
Sprache:eng
Schlagworte:
Ammonia
Correlations
Marine
Nitrates
Nitrites
Nitrogen
Oxygen
Phosphates
Quaternary ammonium compounds
Sediments
Surface water
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Zusammenfassung:Variations of dissolved ammonia and phosphate in pore water at depths of 2 to 40 cm were examined every 3 hrfor 27 hr. Eh values were consistently negative and pH ranged from 7.2 to 8.0. Ammonium and phosphate were greatest at 10 cm and both steadily decreased to 40 cm. Maximum ammonium concentrations were 2.7 μM in surface water and 169 μM in the sediment. Maximum phosphate concentrations were 6.4 μM in surface water to 30.4 μM in sediment. Nitrate concentrations were 2.2 to 9.9 μM at 2 cm and 0.1 to 0.8 μM in surface waters. No nitrate was detected below 2 cm. Dynamic changes in the levels of phosphate and ammonium were observed during the period.
ISSN:0098-4590