Speciation of phosphorus fractionation in river sediments by explanatory data analysis
Φόρτωση...
Ημερομηνία
Τίτλος Εφημερίδας
Περιοδικό ISSN
Τίτλος τόμου
Εκδότης
Elsevier
Περίληψη
Τύπος
Είδος δημοσίευσης σε συνέδριο
Είδος περιοδικού
peer reviewed
Είδος εκπαιδευτικού υλικού
Όνομα συνεδρίου
Όνομα περιοδικού
Water Res
Όνομα βιβλίου
Σειρά βιβλίου
Έκδοση βιβλίου
Συμπληρωματικός/δευτερεύων τίτλος
Περιγραφή
This article investigates the controls on sediment phosphorus (P) speciation dynamics as a function of its fractionation into chemically defined operational pools along a river continuum. A total of 27 variables were analyzed in bed sediment samples collected for one year from six sampling points, along a 75 km river continuum (Louros River, NW Greece). Multivariate explanatory analysis of the complex experimental data matrix was performed in order to unravel the spatial pattern of P speciation. Non-parametric examinations were also applied in order to elucidate the temporal variations encountered in the speciation of P. The results suggest that inorganic P species control P bioavailability in space and time. Organic P was found to be very reactive among the various fractions thus changing its bioavailability but exhibited no temporal variation. The utility of the proposed approach in the differentiation of natural and anthropogenic P inputs and their classification to point and non-point sources is demonstrated presenting a significant improvement compared to mere fractionation analysis. (c) 2006 Elsevier Ltd. All rights reserved.
Περιγραφή
Λέξεις-κλειδιά
explanatory data analysis, fractionation, phosphorus, river sediments, speciation, multivariate chemometrics, phosphate fractions, temporal variations, soil-phosphorus, water-quality, bed-sediments, lake, forms, release, discrimination
Θεματική κατηγορία
Παραπομπή
Σύνδεσμος
<Go to ISI>://000244108500016
http://ac.els-cdn.com/S0043135406005872/1-s2.0-S0043135406005872-main.pdf?_tid=2898545c-349d-11e3-a05c-00000aab0f6b&acdnat=1381733714_0aad4b64987e724294c687fae9f6eb52
http://ac.els-cdn.com/S0043135406005872/1-s2.0-S0043135406005872-main.pdf?_tid=2898545c-349d-11e3-a05c-00000aab0f6b&acdnat=1381733714_0aad4b64987e724294c687fae9f6eb52
Γλώσσα
en
Εκδίδον τμήμα/τομέας
Όνομα επιβλέποντος
Εξεταστική επιτροπή
Γενική Περιγραφή / Σχόλια
Ίδρυμα και Σχολή/Τμήμα του υποβάλλοντος
Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας