Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Alain Aminot"'
Publikováno v:
Marine Chemistry (0304-4203) (Elsevier Science Bv), 2012-01, Vol. 128, P. 57-63
Following previous work, the production of reference material for nutrients in seawater, using pasteurization as a preservation method, was carried out seven times between 2006 and 2010 in the framework of inter-laboratory exercises. The preparation
Autor:
Michel Lunven, Daniel Delmas, Alain Aminot, Claire Labry, Francis Gohin, Alain Herbland, Jean-François Guillaud
Publikováno v:
Journal of Marine Systems (0924-7963) (Elsevier), 2008-07, Vol. 72, N. 1-4, P. 309-319
Seasonal variations in nutrient inputs are described for the main rivers (Loire and Vilaine) flowing into the northern Bay of Biscay. The river plumes are high in N/P ratio in late winter and spring, but not in the inner plume during the summer. Cons
Autor:
Roger Kerouel, Alain Aminot
Publikováno v:
Marine Chemistry (0304-4203) (Elsevier), 2006-02, Vol. 98, N. 2-4, P. 223-240
The paper reviews the methods described in the literature for the determination of total dissolved free primary amines (TDFPA) by fluorescence. A wide set of reaction conditions can be found, but they rely on few experiments for their validation. Amo
Publikováno v:
Marine Chemistry (0304-4203) (Elsevier), 2004-08, Vol. 88, N. 1-2, P. 53-60
*: Corresponding author : Tel.: +33-2-23-23-57-49; fax: +33-2-23-23-60-90; Thierry.labasque@univ-rennes1.fr Abstract: The spectrophotometric iodine measurement for oxygen determination by the Winkler method is re- examined for theoretical and operati
Autor:
Françoise Andrieux-Loyer, Alain Aminot
Publikováno v:
Estuarine, Coastal and Shelf Science (0272-7714) (Elsevier), 2001-05, Vol. 52, N. 5, P. 617-629
Phosphorus forms with respect to sediment characteristics, such as grain-size, and major chemical elements, were studied in French coastal marine areas (the Bay of Seine and the Loire and Gironde Estuaries).In the three areas, Fe/Al-bound phosphate (
Autor:
M.A. El Sayed, Alain Aminot
Publikováno v:
Estuarine, Coastal and Shelf Science (0272-7714) (Elsevier), 2000-06, Vol. 50, N. 6, P. 835-842
Extractable organic copper using C18 Sep-Pak cartridges was investigated in seawater after laboratory experiment showed that the (C18 Sep-Pak) cartridges were reliable, in open and coastal waters with normal levels of dissolved organic carbon, for th
Autor:
Roger Kerouel, Alain Aminot
Publikováno v:
Marine Chemistry. 61:203-208
The first application of pasteurization to stabilize seawater samples for subsequent nitrate and nitrite determination in marine water is presented. Coastal seawater sampled from winter to late spring, with various chemical characteristics, was used.
Autor:
Roger Kerouel, Alain Aminot
Publikováno v:
Analytica Chimica Acta. 351:299-309
Heat treatments, pasteurization and tyndallization, were tested as potential techniques for preservation of seawater samples for subsequent determination of nutrients (nitrate, nitrite, ammonia and phosphate), either for aquatic studies or for produc
Autor:
Alain Aminot, Francoise Andrieux
Publikováno v:
Continental Shelf Research. 17:1229-1245
The distribution pattern and temporal variations of concentrations of phosphorus forms were studied in the sediments of the Bay of Seine in seven cruises over the period of 1992–1994. Calcium-bound phosphate (Ca-P) contributed over 50% of the sedim
Autor:
Alain Aminot, Roger Kerouel
Publikováno v:
Marine Chemistry. 57:265-275
A direct automated method for routine determination of ammonia in sea and estuarine waters has been developed using segmented flow analysis. The method, based on the reaction of ammonia with orthophtaldialdehyde (OPA) and sulfite, is easy to use, sen