| Home  | About ScienceAsia  | Publication charge  | Advertise with us  | Subscription for printed version  | Contact us  
Editorial Board
Journal Policy
Instructions for Authors
Online submission
Author Login
Reviewer Login
Volume 49 Number 2
Volume 49 Number 1
Volume 48 Number 6
Volume 48 Number 5
Volume 48 Number 4
Volume 48 Number 3
Earlier issues
Volume 34 Number 2 Volume 34 Number 3 Volume 34 Number 4

previous article next article

Research articles

ScienceAsia 34 (2008): 287-292 |doi: 10.2306/scienceasia1513-1874.2008.34.287

Effect of pH on the mobilization of copper and iron by pyoverdin I in artificially contaminated soils

Panadda Tansupoa, Herbert Budzikiewiczb, Saksit Chanthaia, Chalerm Ruangviriyachaia,*

ABSTRACT:     The effect of pyoverdin I, a natural product from a Thai Pseudomonas aeruginosa strain, on the solubilization of iron and copper in two different artificially contaminated soils was investigated. The mobilized concentrations of both metals in the samples were determined by atomic absorption spectrometry. From these results, the presence of pyoverdin I can significantly increase the amount of extractable iron and copper compared to the control. The adsorption and desorption of these metals depend not only on the environmental pH but also on the soil type, which results from differences in the quantity of the organic matter. The ability of pyoverdin I to mobilize either metal in the soils indicates its important role in connection with toxicology, as well as for soil extraction and weathering. Studying the mobilization of metals by the bacterial pyoverdin I as a function of pH may provide additional information on the chemical association of metals in soil.

Download PDF

8 Downloads 1088 Views

a Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
b Department of Organic Chemistry, University of Cologne, 50939 Cologne, Germany

* Corresponding author, E-mail: chal_ru@kku.ac.th

Received 15 Jan 2007, Accepted 10 Jun 2008