Automated high resolution determination of the trace elements iron and aluminium in the surface ocean using a towed Fish coupled to flow injection analysis |
| |
| Institution: | 1. Department of Oceanography, School of Ocean Earth Science and Technology, University of Hawaii, 1000 Pope Road, Honolulu, HI 96822, USA;2. Department of Earth, Atmospheric and Planetary Sciences, MIT, Cambridge, MA 02139, USA;3. Department of Marine Science, University of Southern Mississippi, Stennis Space Center, MS 39529, USA;1. Laboratory of Environmental Analytical Chemistry, University of the Balearic Islands, Carretera de Valldemosa km 7.5, 07122, Palma de Mallorca, Spain;2. Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, P.O. Box 96, 13400-970, Piracicaba, SP, Brazil;1. Laboratory of Environmental Analytical Chemistry. University of the Balearic Islands, E-07122 Palma de Mallorca, Spain;2. Sciware Systems, S.L. Spin-off of the University of the Balearic Islands, E-07193 Bunyola, Spain |
| |
| Abstract: | A towed surface sampling device coupled to two automated flow injection analysis (FIA) systems is described. The towed system permits uncontaminated sampling of seawater from research vessels while underway at full speed. Coupling the sampler to the FIA systems permits automatic determination of Al and Fe in surface waters at natural levels at 5 min intervals, equivalent to ～1.5 km spacing at a ship speed of 10 knots (5 m s?1). Results from the tropical Atlantic indicate significant (50%) variation in concentrations of both Al and Fe on space scales of less than 90 km. The combined system facilitates surface mapping of large regions of the ocean for dissolved Al and Fe, thus identifying the sites and magnitude of eolian deposition to the surface ocean. In combination with the determination of nutrients and other biological parameters this permits the investigation of the role that eolian deposition plays in modifying surface water biogeochemical cycles. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
