The Distribution and Redox Chemistry of Iron in the Pettaquamscutt Estuary

Autor:	Daniel O'Sullivan, Alfred K. Hanson, Dana R. Kester
Rok vydání:	1997
Předmět:	chemistry.chemical_classification Sulfide Lability Chemistry Inorganic chemistry Mineralogy Aquatic Science engineering.material Oceanography Ascorbic acid Redox Anoxic waters Mackinawite Oxidation state engineering Dissolution
Zdroj:	Estuarine, Coastal and Shelf Science. 45:769-788
ISSN:	0272-7714
DOI:	10.1006/ecss.1997.0239
Popis:	A series of high resolution (10 cm) vertical profiles of iron were determined across the oxic/anoxic boundary in the Lower Pond of the Pettaquamscutt Estuary. Selective chemical treatments and multiple analytical methods were used to detemine the oxidation state and lability of iron across the oxic/anoxic boundary. The vertical distributions of dissolved and total iron were determined by atomic absorption spectroscopy, and dissolved Fe(II) and reducible iron were determined using a modified Ferrozine spectrophotometric method. Well-developed maxima of total dissolved iron ≈7·5 μM occurred within the oxic/anoxic transition zone. Analysis of Fe(II) by the FZ method indicates that more than 95% of the dissolved iron determined by atomic absorption spectroscopy within the maximum is in the form of Fe(II). The concentration of dissolved Fe(II) ranged from
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e06756cd1421fe9a09f405dcf3a36bc9 https://doi.org/10.1006/ecss.1997.0239 Zobrazit plný text záznamu Full Text from ScienceDirect