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Solid-phase phosphorus speciation in Saharan Bodélé Depression dusts and source sediments [1]

Phosphorus (P) is one of the most important limiting nutrients for the growth of oceanic phytoplankton and terrestrial ecosystems, which in turn contributes to CO2 sequestration. The solid-phase speciation of P will influence its solubility and hence its availability to such ecosystems. This study reports on the results of X-ray diffraction, electron microprobe chemical analysis and X-ray mapping, chemical extractions and X-ray absorption near-edge spectroscopy analysis carried out to determine the solid-phase speciation of P in dusts and their source sediments from the Saharan Bodélé Depression, the world's greatest single source of dust. Chemical extraction data suggest that the Bodélé dusts contain 28 to 60% (mean 49%) P sorbed to, or co-precipitated with, Fe (hydr)oxides,

Publication Date: 
25/09/2014
Karen A. Hudson-Edwards [2], Charlie S. Bristow [3], Giannantonio Cibin & et al [4]
Chemical Geology [5]
384
16–26
Tags:
Ecosystems [6], Amazon [7], Carbon Sequestration [8], Sahara [9], Fossils [10], Fish [11], Atmosphere [12], Lakes [13], Aerosols [14], Sediment Transport [15]

Technology Partners: MimirTech

Source URL: http://admin.indiaenvironmentportal.org.in/feature-article/solid-phase-phosphorus-speciation-saharan-bod%C3%A9l%C3%A9-depression-dusts-and-source

Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/solid-phase-phosphorus-speciation-saharan-bod%C3%A9l%C3%A9-depression-dusts-and-source
[2] http://admin.indiaenvironmentportal.org.in/category/author/karen-hudson-edwards
[3] http://admin.indiaenvironmentportal.org.in/category/author/charlie-s-bristow
[4] http://admin.indiaenvironmentportal.org.in/category/author/giannantonio-cibin-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/chemical-geology
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ecosystems
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/amazon
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-sequestration
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sahara
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossils
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fish
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lakes
[14] http://admin.indiaenvironmentportal.org.in/category/thesaurus/aerosols
[15] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sediment-transport