DETERMINATION OF HEAVY-METALS IN BIOFILMS FROM THE RIVER-ELBE BY TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROMETRY

Citation
K. Friese et al., DETERMINATION OF HEAVY-METALS IN BIOFILMS FROM THE RIVER-ELBE BY TOTAL-REFLECTION X-RAY-FLUORESCENCE SPECTROMETRY, Spectrochimica acta, Part B: Atomic spectroscopy, 52(7), 1997, pp. 1019-1025
Citations number
15
Categorie Soggetti
Spectroscopy
ISSN journal
05848547
Volume
52
Issue
7
Year of publication
1997
Pages
1019 - 1025
Database
ISI
SICI code
0584-8547(1997)52:7<1019:DOHIBF>2.0.ZU;2-A
Abstract
Heavy metal contents of aquatic biofilms isolated from stones collecte d from, and ceramic plates exposed in, the River Elbe were determined by total-reflection X-ray fluorescence spectrometry (TXRF). The fracti ons of several elements (K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Pb) referred t o the dry mass are 100 to 60 000-fold higher in the biofilm matrix com pared with the bulk water phase. Biofilms grown on the exposed plates have a mass fraction of the determined elements higher by a factor of 2-3 compared with the biofilms derived from stones. These differences may be attributed to the different ages of the biofilms. (C) 1997 Else vier Science B.V.