Determination of Arsenic in Algae - Results of an Interlaboratory Trial: Determination of Arsenic Species in the Water-Soluble Fraction

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Abstract

Seven algae samples, five purchased from food stores and two reference algae (BCR 279 Sea Lettuce) were distributed as blind samples to 13 laboratories from which five labs attempted a full characterisation of the water-soluble fraction with respect to their arsenic species. The extraction efficiency is largely dependant on the algae and varied from 3% to 96%. Besides inorganic arsenic (mainly as As-(V) DMA((V))) and, in particular, several arsenosugars were identified in all samples. From the five labs, three labs gave agreeable results in respect of the arsenic species identification and its quantification, although different chromatographic methods were used. Different Hijiki samples seem to contain largely different arsenic concentration (67-113 mg As/kg) which may also have an influence on the distribution of inorganic arsenic and arsenosugars.

Original languageEnglish
Pages (from-to)153-166
Number of pages13
JournalMicrochimica Acta
Volume151
DOIs
Publication statusPublished - May 2005

Keywords

  • round robin
  • arsenic speciation
  • seaweed
  • HUMAN URINE
  • IDENTIFICATION
  • METABOLISM
  • SPECIATION
  • INGESTION

Cite this

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title = "Determination of Arsenic in Algae - Results of an Interlaboratory Trial: Determination of Arsenic Species in the Water-Soluble Fraction",
abstract = "Seven algae samples, five purchased from food stores and two reference algae (BCR 279 Sea Lettuce) were distributed as blind samples to 13 laboratories from which five labs attempted a full characterisation of the water-soluble fraction with respect to their arsenic species. The extraction efficiency is largely dependant on the algae and varied from 3{\%} to 96{\%}. Besides inorganic arsenic (mainly as As-(V) DMA((V))) and, in particular, several arsenosugars were identified in all samples. From the five labs, three labs gave agreeable results in respect of the arsenic species identification and its quantification, although different chromatographic methods were used. Different Hijiki samples seem to contain largely different arsenic concentration (67-113 mg As/kg) which may also have an influence on the distribution of inorganic arsenic and arsenosugars.",
keywords = "round robin, arsenic speciation, seaweed, HUMAN URINE, IDENTIFICATION, METABOLISM, SPECIATION, INGESTION",
author = "Andrea Raab and P. Fecher and Jorg Feldmann",
year = "2005",
month = "5",
doi = "10.1007/s00604-005-0395-7",
language = "English",
volume = "151",
pages = "153--166",
journal = "Microchimica Acta",
issn = "0026-3672",
publisher = "SPRINGER WIEN",

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TY - JOUR

T1 - Determination of Arsenic in Algae - Results of an Interlaboratory Trial: Determination of Arsenic Species in the Water-Soluble Fraction

AU - Raab, Andrea

AU - Fecher, P.

AU - Feldmann, Jorg

PY - 2005/5

Y1 - 2005/5

N2 - Seven algae samples, five purchased from food stores and two reference algae (BCR 279 Sea Lettuce) were distributed as blind samples to 13 laboratories from which five labs attempted a full characterisation of the water-soluble fraction with respect to their arsenic species. The extraction efficiency is largely dependant on the algae and varied from 3% to 96%. Besides inorganic arsenic (mainly as As-(V) DMA((V))) and, in particular, several arsenosugars were identified in all samples. From the five labs, three labs gave agreeable results in respect of the arsenic species identification and its quantification, although different chromatographic methods were used. Different Hijiki samples seem to contain largely different arsenic concentration (67-113 mg As/kg) which may also have an influence on the distribution of inorganic arsenic and arsenosugars.

AB - Seven algae samples, five purchased from food stores and two reference algae (BCR 279 Sea Lettuce) were distributed as blind samples to 13 laboratories from which five labs attempted a full characterisation of the water-soluble fraction with respect to their arsenic species. The extraction efficiency is largely dependant on the algae and varied from 3% to 96%. Besides inorganic arsenic (mainly as As-(V) DMA((V))) and, in particular, several arsenosugars were identified in all samples. From the five labs, three labs gave agreeable results in respect of the arsenic species identification and its quantification, although different chromatographic methods were used. Different Hijiki samples seem to contain largely different arsenic concentration (67-113 mg As/kg) which may also have an influence on the distribution of inorganic arsenic and arsenosugars.

KW - round robin

KW - arsenic speciation

KW - seaweed

KW - HUMAN URINE

KW - IDENTIFICATION

KW - METABOLISM

KW - SPECIATION

KW - INGESTION

U2 - 10.1007/s00604-005-0395-7

DO - 10.1007/s00604-005-0395-7

M3 - Article

VL - 151

SP - 153

EP - 166

JO - Microchimica Acta

JF - Microchimica Acta

SN - 0026-3672

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