Arsenosugars and other arsenic compounds in littoral zone algae from the Adriatic Sea

Šlejkovec, Zdenka; Kápolna, Emese; Ipolyi, I.; Elteren, Johannes T. van

doi:10.1016/j.chemosphere.2005.09.009

Cited by 61 publications

(48 citation statements)

References 18 publications

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“…Thus, if we compare the results obtained for P. oceanica with those reported for Posidonia australis (Thomson et al 2007), low levels of total arsenic are found in both species, and the presence of inorganic arsenic and some arsenosugars are in common. Also, the AB is detected in both, and we agree with the authors in the hypothesis that this compound could be attributed to the epiphytes, which are difficult to remove from the sample with the usual washing procedures (Slejkovec et al 2006). This hypothesis would agree with others (Grotti et al 2008;Nischwitz and Pergantis 2005).…”

Section: Discussionsupporting

confidence: 84%

“…With respect to the wide range of extraction efficiency of the arsenic species found, the values reported in the literature also cover wide ranges of percentages since this parameter, even using the same extractant, is highly dependent on the algae species (Shibata et al 1990;Van Hulle et al 2002); for example, 13.3-64.1% in algae from several geographical zones (Nischwitz and Pergantis 2005), 9.3-91.2% in algae from Hiroshima Bay (Hirata and Toshimitsu 2007) or 20.7-97% in algae from the Adriatic Sea (Slejkovec et al 2006) have been reported.…”

Section: Discussionmentioning

confidence: 96%

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Occurrence of arsenic species in the seagrass Posidonia oceanica and in the marine algae Lessonia nigrescens and Durvillaea antarctica

2009

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The seagrass Posidonia oceanica from the Mediterranean coast and the brown algae Durvillaea antarctica and Lessonia nigrescens from the Chilean coast were analysed for total arsenic and for arsenic species. Arsenic species were extracted with water and measured by high-performance liquid chromatography-inductive coupled plasma mass spectrometry. Arsenite, arsenate, methylarsonate, dimethylarsinate, sulfonate sugar, sulphate sugar and phosphate sugar were analysed with an anion exchange column. Arsenobetaine, arsenocholine and glycerol sugar were separated with a cation exchange column. An extract of Fucus serratus was used to assign the arsenosugar peaks in the chromatograms from the sample extracts. In addition to the four common arsenosugars found in algae, inorganic arsenic was also measured in some samples, with the highest content found in L. nigrescens. The certified reference material (CRM) NIES no. 9 Sargassum fullvellum was analysed for quality assessment of total arsenic, and moreover, arsenosugars were also determined in this CRM.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 96%

Occurrence of arsenic species in the seagrass Posidonia oceanica and in the marine algae Lessonia nigrescens and Durvillaea antarctica

2009

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“…macro algae and AC and TETRA in two red algae and one green alga is unusual, as these arsenic species are not normally associated with marine algae. It is likely these compounds are related to microscopic epiphytes incorporated into the cellular structure of algae that are not easily removed by rinsing of samples, as reported recently byŠlejkovec et al 37 …”

Section: Caulerpa Cactoidesmentioning

confidence: 74%

Arsenic and selected elements in inter‐tidal and estuarine marine algae, south‐east coast, NSW, Australia

Thomson

Maher

Foster

2007

Applied Organom Chemis

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The cycling of arsenic in marine inter-tidal and estuarine algae was examined by measuring total arsenic concentrations and arsenic species in marine inter-tidal and estuarine algae from the south-east coast, NSW, Australia. A range of elements required for metabolism in photosynthetic organisms were also measured to determine if any relationship between these elements and arsenic concentrations occurred. Total arsenic concentrations varied between classes of algae: red macro algae, 4.3-24.7 µg g −1 ; green macro algae, 8.0-11.0 µg g −1 ; and blue green algae, 10.4-18.4 µg g −1 . No significant relationships were found between arsenic concentrations and concentrations of iron, cobalt, copper, manganese, molybdenum, magnesium, phosphorus and zinc. Distinct differences between algal classes were found for the proportion of arsenic species present in the lipid and water-soluble fractions, with green algae having a higher proportion of arsenic in lipids (19-44%) than red intertidal (5-34%) or estuarine algae (10-24%). Acid hydrolysis of lipid extracts revealed dimethyl arsenic, glycerol arsenoribose and two unknown cation based arsenolipids. Within water-soluble extracts, red macro algae and blue green algae contained a greater proportion of arsenic as inorganic and simple methylated arsenic species compared with green macro algae, which contained predominantly glycerol arsenoribose. Arsenobetaine, arsenocholine and tetramethyl arsonium ion were also present in some water-soluble extracts, but are not normally identified with algae and are probably due to the presence of attached microscopic epiphytes. Residue extracts contained predominantly inorganic arsenic, most likely associated with insoluble constituents of the cell. Marine algae contained lipids with arsenic moieties that may be precursors for arsenobetaine. Specifically, the presence of dimethylated arsenoribose-based arsenolipids can transform to arsenobetaine via intermediates previously identified in marine organisms.

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“…Although the average concentration of As in seawater is typically low (Mukhopadhyay et al, 2002), as an analog of phosphate, As(V) absorption by marine algae is enhanced along the uptake patterns of phosphate which occurs at low levels (0.065-0.113 lM) in marine environments (Sanders, 1980;Takahashi et al, 1990;Rahman et al, 2008). Marine algae have the ability of accumulate As 3-4 orders of magnitude higher than that in seawater, yielding less toxic or non-toxic organic arsenic compounds (Edmonds and Francesconi, 1981;Šlejkovec et al, 2006). Many studies on As speciation in marine organisms have established that arsenobetaine (AsB) is the major As species found in animal tissues, while in plants like algae, arsenosugars are the most frequently occurring As species (Murray et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Biomethylation and volatilization of arsenic by the marine microalgae Ostreococcus tauri

et al. 2013

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Arsenosugars and other arsenic compounds in littoral zone algae from the Adriatic Sea

Cited by 61 publications

References 18 publications

Occurrence of arsenic species in the seagrass Posidonia oceanica and in the marine algae Lessonia nigrescens and Durvillaea antarctica

Occurrence of arsenic species in the seagrass Posidonia oceanica and in the marine algae Lessonia nigrescens and Durvillaea antarctica

Arsenic and selected elements in inter‐tidal and estuarine marine algae, south‐east coast, NSW, Australia

Biomethylation and volatilization of arsenic by the marine microalgae Ostreococcus tauri

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