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DGT-based Measurement of Phosphorus in Sediment Microzones by Shengrui Wang,Zhihao Wu

By Shengrui Wang,Zhihao Wu

This booklet specializes in the improvement of DGT (diffusive gradients
in skinny movies) and the similar innovations for measuring and investigating the geochemical
process and P move around the sediment/water or sediment/root interface in
lakes. a chain of DGT ideas comparable to new sorts of probes, attempt equipment in sediment or the rhizosphere,
DIFS (DGT brought about fluxes in sediments and soils)
model for kinetic P alternate, CID (computer imaging densitometry) for S(-II), and
microchelex gel/LA-ICP-MS (laser
ablation inductively coupled plasma mass spectrometry) were constructed.

The corresponding chapters at the conception and
methodology of DGT, the “internal P loading” or P move throughout sediment/root
in lakes, supply insights into the study strategy and conclusions, including
the P unlock mechanism, the quantification of “internal P loading”, kinetic P
exchange in DGT/sediment interface, Fe- or S(-II)-microniches at submillimeter
scales in sediments for the prediction of P liberate, and DGT as a surrogate for the prediction of P uptake
by roots.

It also
offers new views within the fields of P research and P procedure in
micro-interfaces in lakes utilizing DGT thoughts. The P remobilization from
Fe-bound P, the coupled Fe-S(-II)-P geochemical response and algae biomass
breakdown inflicting P free up, are elucidated utilizing DGT tools in sediment
layers. DGT parameters and curves for time or distance
derived from DIFS can be utilized to evaluate kinetic P
release within the sediment microzone. CID and LA-ICP-MS equipment bring Fe- and
S(-II) photographs at submillimeter scales, which are used for the quantification
of flux regarding microniche peaks and the prediction of P liberate from
Fe-microniche or Fe-S(-II)-P geochemical reactions. DGT measurements in-situ in
rhizosphere or rhizonbox can
give CE (effective
concentration) and CDGT
values for the prediction of P amassed in plant tissues.

This e-book offers a worthwhile reference source for senior graduate
students, academics and researchers within the fields of the geochemical approach of
eutrophic components in lakes, lake eutrophication mechanism and environmental analysis.

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