Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/110162
Title: Occurrence of arsenic species in algae and freshwater plants of an extreme arid region in northern Chile, the Loa River Basin
Author: Pell i Lorente, Albert
Márquez, Anna
López Sánchez, José Fermín
Rubio i Rovira, Roser
Barbero Castro, Mercedes
Stegen, Susana
Queirolo, Fabrizio
Díaz-Palma, Paula
Keywords: Arsènic
Algues
Plantes aquàtiques
Arsenic
Algae
Aquatic plants
Issue Date: Jan-2013
Publisher: Elsevier Ltd
Abstract: This study reports data on arsenic speciation in two green algae species (Cladophora sp. and Chara sp.) and in five aquatic plants (Azolla sp., Myriophyllum aquaticum, Phylloscirpus cf. desserticola, Potamogeton pectinatus, Ruppia filifolia and Zannichellia palustris) from the Loa River Basin in the Atacama Desert (northern Chile). Arsenic content was measured by Mass Spectrometry coupled with Inductively Coupled Plasma (ICP-MS), after acidic digestion. Liquid Chromatography coupled to ICP-MS was used for arsenic speciation, using both anionic and cationic chromatographic exchange systems. Inorganic arsenic compounds were the main arsenic species measured in all samples. The main arsenic species in the extracts of freshwater algae and plants were arsenite and arsenate, whereas glycerol-arsenosugar (gly-sug), dimethylarsinic acid (DMA) and methylarsonic acid (MA) were present only as minor constituents. Of the samples studied, algae species accumulated more arsenic than aquatic plants. Total arsenic content ranged from 182 to 11,100 and from 20 to 248 mg As kg-1 (d.w.) in algae and freshwater plants, respectively. In comparison with As concentration in water samples, there was hyper-accumulation (>0.1% d.w.) in Cladophora sp.
Note: Versió postprint del document publicat a: https://doi.org/10.1016/j.chemosphere.2012.08.028
It is part of: Chemosphere, 2013, vol. 90, num. 2, p. 556-564
Related resource: https://doi.org/10.1016/j.chemosphere.2012.08.028
URI: http://hdl.handle.net/2445/110162
ISSN: 0045-6535
Appears in Collections:Articles publicats en revistes (Enginyeria Química i Química Analítica)

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