Total and inorganic arsenic in Antarctic macroalgae
The Antarctic region offers unparalleled possibilities of investigating the natural distribution of metals and metalloids, such as arsenic. Total and inorganic As were analysed in nine species of Antarctic macroalgae collected during the 2002 summer season in the Potter Cove area at Jubany-Dallmann Station (South Shetland Islands, Argentinian Base). Total As was determined by inductively coupled plasma-optical emission spectrometry after microwave-assisted acid digestion. Inorganic As was determined by acid digestion, solvent extraction, flow injection-hydride generation-atomic absorption spectrometry. Total As ranged from 5.8 μg g-1 dry weight (dw) (Myriogramme sp.) to 152 μg g-1 dw (Himantothallus grandifolius). Total As concentrations were higher in Phaeophytes (mean ± SD: 71 ± 44 μg g-1 dw) than in Rhodophytes (mean ± SD: 15 ± 11 μg g-1 dw). Inorganic As ranged from 0.12 μg g-1 (Myriogramme sp.) to 0.84 μg g-1 dw (Phaeurus antarcticus). The percentage of inorganic As with respect to total As was 0.7 for Phaeophytes, but almost 4 times higher for Rhodophytes (2.6). The work discusses possible causes for the presence of As in marine organisms in that pristine environment.
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Elsevier
2007-10
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Subjects: | Algae, Arsenic, Inorganic arsenic, Antarctica, |
Online Access: | http://hdl.handle.net/10261/331294 |
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dig-iata-es-10261-3312942023-07-20T11:38:16Z Total and inorganic arsenic in Antarctic macroalgae Farias, Silvia Sara Smichowski, Patricia Vélez, Dinoraz Montoro Martínez, Rosa Curtosi, Antonio Vodopívez, Cristian Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo Centro Atómico Constituyentes (Argentina) Algae Arsenic Inorganic arsenic Antarctica The Antarctic region offers unparalleled possibilities of investigating the natural distribution of metals and metalloids, such as arsenic. Total and inorganic As were analysed in nine species of Antarctic macroalgae collected during the 2002 summer season in the Potter Cove area at Jubany-Dallmann Station (South Shetland Islands, Argentinian Base). Total As was determined by inductively coupled plasma-optical emission spectrometry after microwave-assisted acid digestion. Inorganic As was determined by acid digestion, solvent extraction, flow injection-hydride generation-atomic absorption spectrometry. Total As ranged from 5.8 μg g-1 dry weight (dw) (Myriogramme sp.) to 152 μg g-1 dw (Himantothallus grandifolius). Total As concentrations were higher in Phaeophytes (mean ± SD: 71 ± 44 μg g-1 dw) than in Rhodophytes (mean ± SD: 15 ± 11 μg g-1 dw). Inorganic As ranged from 0.12 μg g-1 (Myriogramme sp.) to 0.84 μg g-1 dw (Phaeurus antarcticus). The percentage of inorganic As with respect to total As was 0.7 for Phaeophytes, but almost 4 times higher for Rhodophytes (2.6). The work discusses possible causes for the presence of As in marine organisms in that pristine environment. The authors are grateful to Dr. Sergio Caroli for supplying the certified reference material, Dr. Rodolfo del Valle for his assessment of the geochemistry of King George Island, and Dr. Liliana Quartino for identification of the algae collected. The authors are also grateful to CYTED 105PI0272 project for technical collaboration and assessment. This work is part of CNEA-CAC projects P5-PID 36–2 and 36–4. 2023-07-18T10:40:03Z 2023-07-18T10:40:03Z 2007-10 2023-07-18T10:40:03Z artículo doi: 10.1016/j.chemosphere.2007.04.049 issn: 0045-6535 Chemosphere 69(7): 1017-1024 (2007) http://hdl.handle.net/10261/331294 http://dx.doi.org/10.1016/j.chemosphere.2007.04.049 Sí none Elsevier |
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Algae Arsenic Inorganic arsenic Antarctica Algae Arsenic Inorganic arsenic Antarctica |
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Algae Arsenic Inorganic arsenic Antarctica Algae Arsenic Inorganic arsenic Antarctica Farias, Silvia Sara Smichowski, Patricia Vélez, Dinoraz Montoro Martínez, Rosa Curtosi, Antonio Vodopívez, Cristian Total and inorganic arsenic in Antarctic macroalgae |
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The Antarctic region offers unparalleled possibilities of investigating the natural distribution of metals and metalloids, such as arsenic. Total and inorganic As were analysed in nine species of Antarctic macroalgae collected during the 2002 summer season in the Potter Cove area at Jubany-Dallmann Station (South Shetland Islands, Argentinian Base). Total As was determined by inductively coupled plasma-optical emission spectrometry after microwave-assisted acid digestion. Inorganic As was determined by acid digestion, solvent extraction, flow injection-hydride generation-atomic absorption spectrometry. Total As ranged from 5.8 μg g-1 dry weight (dw) (Myriogramme sp.) to 152 μg g-1 dw (Himantothallus grandifolius). Total As concentrations were higher in Phaeophytes (mean ± SD: 71 ± 44 μg g-1 dw) than in Rhodophytes (mean ± SD: 15 ± 11 μg g-1 dw). Inorganic As ranged from 0.12 μg g-1 (Myriogramme sp.) to 0.84 μg g-1 dw (Phaeurus antarcticus). The percentage of inorganic As with respect to total As was 0.7 for Phaeophytes, but almost 4 times higher for Rhodophytes (2.6). The work discusses possible causes for the presence of As in marine organisms in that pristine environment. |
author2 |
Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo |
author_facet |
Programa Iberoamericano de Ciencia y Tecnología para el Desarrollo Farias, Silvia Sara Smichowski, Patricia Vélez, Dinoraz Montoro Martínez, Rosa Curtosi, Antonio Vodopívez, Cristian |
format |
artículo |
topic_facet |
Algae Arsenic Inorganic arsenic Antarctica |
author |
Farias, Silvia Sara Smichowski, Patricia Vélez, Dinoraz Montoro Martínez, Rosa Curtosi, Antonio Vodopívez, Cristian |
author_sort |
Farias, Silvia Sara |
title |
Total and inorganic arsenic in Antarctic macroalgae |
title_short |
Total and inorganic arsenic in Antarctic macroalgae |
title_full |
Total and inorganic arsenic in Antarctic macroalgae |
title_fullStr |
Total and inorganic arsenic in Antarctic macroalgae |
title_full_unstemmed |
Total and inorganic arsenic in Antarctic macroalgae |
title_sort |
total and inorganic arsenic in antarctic macroalgae |
publisher |
Elsevier |
publishDate |
2007-10 |
url |
http://hdl.handle.net/10261/331294 |
work_keys_str_mv |
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_version_ |
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