The identification of some water-soluble arsenic species in the marine brown algaeFucus distichus

Harrington, Christopher F.; Ojo, A. A.; Lai, Vivan W.-M.; Reimer, Kenneth J.; Cullen, William R.

doi:10.1002/(sici)1099-0739(199712)11:12<931::aid-aoc627>3.0.co;2-f

Cited by 23 publications

(4 citation statements)

References 14 publications

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“…Therefore, adequate removal of the matrix is necessary to improve the sensitivity and reliability of instrumental analysis and decrease interferences in chromatographic separation related to the matrix as well as analyte detection . For example, the presence of arsenic-free carbohydrates may hinder purification . However, the choice for further purification is strongly dependent upon the nature of the sample and the separation and/or detection methods to be employed. , …”

Section: Sample Cleanup Proceduresmentioning

confidence: 99%

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Analytical Methodologies for the Determination of Organoarsenicals in Edible Marine Species: A Review

Luvonga

Rimmer

et al. 2020

J. Agric. Food Chem.

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Setting regulatory limits for arsenic in food is complicated, owing to the enormous diversity of arsenic metabolism in humans, lack of knowledge about the toxicity of these chemicals, and lack of accurate arsenic speciation data on foodstuffs. Identification and quantification of the toxic arsenic compounds are imperative to understanding the risk associated with exposure to arsenic from dietary intake, which, in turn, underscores the need for speciation analysis of the food. Arsenic speciation in seafood is challenging, owing to its existence in myriads of chemical forms and oxidation states. Interconversions occurring between chemical forms, matrix complexity, lack of standards and certified reference materials, and lack of widely accepted measurement protocols present additional challenges. This review covers the current analytical techniques for diverse arsenic species. The requirement for high-quality arsenic speciation data that is essential for establishing legislation and setting regulatory limits for arsenic in food is explored.

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Section: Sample Cleanup Proceduresmentioning

confidence: 99%

“…15 For example, the presence of arsenic-free carbohydrates may hinder purification. 157 However, the choice for further purification is strongly dependent upon the nature of the sample and the separation and/or detection methods to be employed. 15,76 4.1.…”

Section: Sample Cleanup Proceduresmentioning

confidence: 99%

Analytical Methodologies for the Determination of Organoarsenicals in Edible Marine Species: A Review

Luvonga

Rimmer

et al. 2020

J. Agric. Food Chem.

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“…The most critical step in the speciation analysis is undoubtedly sample preparation, where it is necessary to extract quantitatively the arsenic species from the complex biological matrix while maintaining the species integrity. In literature, many studies about arsenic extraction in algae can be found, which have used mixtures of water/methanol to extract arsenic species [5,6,10,[13][14][15][16][17][18][19]. Arsenic recoveries are often low and variable, even performing several extraction steps.…”

Section: Introductionmentioning

confidence: 99%

“…Arsenic recoveries are often low and variable, even performing several extraction steps. Conventional sonication is commonly used in order to improve the characteristics of solid-liquid extraction methods [2,5,10,[14][15][16][17][18][19][20]. However, few studies have used accelerated solvent extraction [5,21] or microwave-assisted extraction [10,22], which have shown to give better recoveries than sonication in ultrasonic bath.…”

Section: Introductionmentioning

confidence: 99%

Determination of soluble toxic arsenic species in alga samples by microwave-assisted extraction and high performance liquid chromatography–hydride generation–inductively coupled plasma-atomic emission spectrometry

Salgado

Simon

2006

Journal of Chromatography A

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A microwave-based procedure for arsenic species extraction in alga samples (Sargassum fulvellum, Chlorella vulgaris, Hizikia fusiformis and Laminaria digitata) is described. Extraction time and temperature were tested in order to evaluate the extraction efficiency of the process. Arsenic compounds were extracted in 8 ml of deionised water at 90 degrees C for 5 min. The process was repeated three times. Soluble arsenic compounds extracted accounted for about 78-98% of total arsenic. The results were compared with those obtained in a previous work, where the extraction process was carried out by ultrasonic focussed probe for 30 s. Speciation studies were carried out by high performance liquid chromatography-hydride generation-inductively coupled plasma-atomic emission spectrometry (HPLC-HG-ICP-AES). The chromatographic method allowed us to separate As(III), As(V), monomethylarsonic acid and dimethylarsinic acid in less than 13 min. The chromatographic analysis of the samples allowed us to identify and quantify As(V) in Hizikia sample and Sargasso material, while the four arsenic species studied were found in Chlorella sample. In the case of Laminaria sample, none of these species was identified by HPLC-HG-ICP-AES. However, in the chromatographic analysis of this alga by HPLC-ICP-AES, an unknown arsenic species was detected.

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Speciation of Metals and Metalloids in Biological Systems

Gardiner¹

2002

Chemical Speciation in the Environment

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The identification of some water-soluble arsenic species in the marine brown algaeFucus distichus

Cited by 23 publications

References 14 publications

Analytical Methodologies for the Determination of Organoarsenicals in Edible Marine Species: A Review

Analytical Methodologies for the Determination of Organoarsenicals in Edible Marine Species: A Review

Determination of soluble toxic arsenic species in alga samples by microwave-assisted extraction and high performance liquid chromatography–hydride generation–inductively coupled plasma-atomic emission spectrometry

Speciation of Metals and Metalloids in Biological Systems

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