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Title (Primary) Arsenic speciation analysis in solutions treated with zeolites
Author Elizalde-González, M.P.; Mattusch, J.; Wennrich, R.
Journal Microchimica Acta
Year 2005
Department ANA
Volume 151
Issue 3-4
Page From 257
Page To 262
Language englisch
Keywords Inorganic arsenic; organoarsenicals; zeolites; speciation analysis
Abstract Experiments have been carried out to study the behaviour of organoarsenicals treated with zeolites by means of speciation analysis. IC-ICP-MS was applied to identify and quantify arsenite, arsenate and the following organoarsenicals: monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), trimethylarsine oxide (TMAO), tetramethylarsonium bromide (TMA+), arsenobetaine (AsB) and arsenocholine (AsC). Zeolites loaded with ferrous ions did not significantly increase the retention of inorganic arsenic species compared to the native zeolites, while there was a ten-fold removal of arsenate relating to arsenite. The formation of As(V) and DMA in the leachates containing clinoptilolites and mordenites was confirmed in the presence of natural and synthetic zeolites. Arsenobetaine and arsenocholine yielded higher levels of arsenate than the methylated species.
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Elizalde-González, M.P., Mattusch, J., Wennrich, R. (2005):
Arsenic speciation analysis in solutions treated with zeolites
Microchim. Acta 151 (3-4), 257 - 262