River dynamics and nanopaticles formation: A comprehensive study on the nanoparticle geochemistry of suspended sediments in the Magdalena River, Caribbean Industrial Area
Artículo de revista
2019-12-21
Journal of Cleaner Production
The coastal zones on continental shelves are the main channels for the distribution of fluvial-sourced
suspended sediments (SSs). In the current research, the monthly average amount of SS draining into
the Caribbean Sea from the Magdalena River in northern Colombia was analyzed to detect nanoparticle
(NPs) containing potential hazardous elements (PHEs). The ecological authorities of Colombia claimed
that the climate change is the key reason behind land erosion and floods occurred in the last years;
therefore, an elaborate understanding of NP dynamics between the Magdalena River body and
streambed is an essential issue in SS research. In this work, the NP geochemistry of SS in the Magdalena
River estuary was studied from the perspective of water quality controls on SS sorting. The morphologies
and the structures of NPs (<100 nm) were examined by field emission scanning electron microscopy (FESEM), high-resolution transmission electron microscopy (HR-TEM), and selected area electron diffraction
(SAED)/micro-beam diffraction (MBD)/energy dispersive X-ray spectroscopy (EDS) techniques. The
average size of NPs was found to be greater than 2 nm and Al, Ti, Fe oxides, and other hazardous elements
were also detected in the SS. The obtained data confirmed that these typical categories of NPs caused the
occurrence-dependent intensification of a conjugative transmission rate associated with the regulators.
The advanced electron beam technique provided a clear insight into SS transportation; therefore, it could
be used as an essential instrument for river supervision/dynamics.
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River dynamics and nanopaticles formation A comprehensive study on the nanoparticle geochemistry of suspended sediments in the Magdalena River, Caribbean Industrial Area.pdf
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Título: River dynamics and nanopaticles formation A comprehensive study on the nanoparticle geochemistry of suspended sediments in the Magdalena River, Caribbean Industrial Area.pdf
Tamaño: 176.5Kb
PDFLEER EN FLIP