Thio arsenosugars in freshwater mussels from the Danube in Hungary.
In contrast to the large body of data on naturally-occurring arsenic compounds in marine organisms, relatively little is known about arsenic speciation in freshwater biota. We report an investigation using HPLC-ICPMS into the arsenic compounds in five species of freshwater mussels collected from five sites from the Danube in Hungary. Total arsenic concentrations in the mussels ranged from 3.8-12.8 mg As kg(-1). The arsenic speciation patterns were broadly similar for mussels representing each of the five species and five sites, but quite different from those reported for marine mussels. The major extractable arsenicals were two oxo arsenosugars (glycerol sugar and phosphate sugar), and their thio analogues (thio glycerol sugar and thio phosphate sugar). Arsenobetaine, usually the major arsenical in marine organisms, was not a significant compound in the freshwater mussels and was detected in only three of the 11 samples. This is the first report of thio arsenosugars in freshwater biota and suggests that these compounds may be common and widespread naturally-occurring arsenicals.
Department of Applied Chemistry, Faculty of Food Science, Corvinus University, Villányi út 29-33, 1118 Budapest, Hungary. csilla.soros@uni-corvinus.hu
Csilla
C
Soeroes
Walter
W
Goessler
Kevin A
KA
Francesconi
Ernst
E
Schmeisser
Reingard
R
Raml
Norbert
N
Kienzl
Markus
M
Kahn
Peter
P
Fodor
Doris
D
Kuehnelt
D000818:Animals; D001151:Arsenic / Q000032:analysis* / Q000378:metabolism; D001152:Arsenicals / Q000032:analysis* / Q000378:metabolism; D049872:Bivalvia / Q000378:metabolism*; D004784:Environmental Monitoring; D005990:Glycerol / Q000031:analogs & derivatives / Q000032:analysis; D006814:Hungary; D045483:Rivers; D013403:Sugar Phosphates / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism
D001152:Arsenicals; D013403:Sugar Phosphates; D014874:Water Pollutants, Chemical; C009465:thioglycerol; D001151:Arsenic; D005990:Glycerol