Binding of Pu(IV) to galacturonic acid and extracellular polymeric substances (EPS) from Shewanella putrefaciens, Clostridium sp and Pseudomonas fluorescens
RADIOCHIMICA ACTA, cilt.96, ss.753-762, 2008 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 96
- Basım Tarihi: 2008
- Doi Numarası: 10.1524/ract.2008.1562
- Dergi Adı: RADIOCHIMICA ACTA
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Sayfa Sayıları: ss.753-762
- Anahtar Kelimeler: Plutonium, Galacturonic acid, EPS, Complexation, Binding
- Çanakkale Onsekiz Mart Üniversitesi Adresli: Hayır
Özet
The conditional stability constants for trace-level concentrations of Pu(IV) complexing with galacturonic acid and EPS, isolated from axenic Clostridium sp., P. fluorescens and Shewanella putrefaciens CN32 cultures, were determined at pH 4 and an ionic strength of 0.1 M NaCl using ail ion-exchange technique. The analysis of ion-exchange data with Schubert's technique indicates that the Pu binding by galacturonic acid and EPS from Clostridium sp. and S. putrefaciens can be described based on the formation of 1 : 1 Pu(IV)-ligand complexes. However, the accurate description of Pu binding by EPS from P. fluorescens requires postulation of a mixture of 1 : 1/1 : 2 complexes between Pu(IV) and ligands under the experimental conditions studied.