In 10 different marine algae from the littoral zone (found between the highest and lowest tide marks on the seashore) arsenic compounds were determined by means of a high-performance liquid chromatography (anion and cation exchange)-UV photochemical digestion-hydride generation-atomic fluorescence spectrometry (HPLC-UV-HGAFS) system. Samples (Ceramium sp., Cystoseira barbata, Enteromorpha sp., Fucus virsoides, two different species of Gelidium, Padina pavonica, Polisyphonia sp. and Ulva rigida) were collected along the Adriatic Sea coast of Slovenia. The total arsenic content of the algal samples, as determined by ICP-MS, ranged from 1.35 to 28.1 microg g(-1) (fresh weight). In all algae but two, the most abundant arsenic species found were arsenosugars with minor amounts of other arsenic compounds. Cystoseira barbata and Ceramium sp. contained high amounts of mainly inorganic arsenic. A small quantity of arsenobetaine was detected in most of the investigated Adriatic algae, which probably originates from mesofauna attached to the algae in their natural habitat.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.chemosphere.2005.09.009 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The kinetics of aqueous thiolated arsenic oxidation.
J Hazard Mater
January 2025
Department of Geological Sciences & Engineering, Queen's University, Kingston, Ontario, Canada. Electronic address:
Thiolated arsenic (As) compounds have been identified in various natural and engineered environments worldwide and are important for the biogeochemical cycling of As, yet quantitative data regarding their stability and transformation rates remains scarce. This study investigates the oxidation kinetics of mono-, di-, and tri-thioarsenate at varying pH, Fe, and (thio-)As concentrations in the aqueous phase. Experiments conducted over four weeks revealed that all thioarsenates were oxidized faster at lower pH, with rates of up to several μmoles/L/d at a pH of 3.
View Article and Find Full Text PDFA novel method for multi-matrix arsenic speciation analysis by anion-exchange HPLC-ICP-MS in the framework of the third (French) total diet study.
Anal Bioanal Chem
January 2025
Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health & Safety (ANSES), Université Paris-Est, 94700, Maisons-Alfort, France.
This study presents the development and validation of a precise analytical method for the speciation analysis of arsenic (As) compounds, including inorganic species [As(III) and As(V)] and organic species such as monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA). The method employs anion-exchange high-performance liquid chromatography (AE HPLC) coupled with inductively coupled plasma-mass spectrometry (ICP-MS). To optimize the sample preparation process, microwave-assisted extraction (MAE) and heat-assisted extraction (HAE) techniques were evaluated and compared.
View Article and Find Full Text PDFRedox transformation and partitioning of arsenic during the hydrothermal aging of FeS-As coprecipitates under anoxic condition.
J Environ Sci (China)
July 2025
Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China. Electronic address:
In sulfidic anoxic environments, iron sulfides are widespread solid phases that play an important role in the arsenic (As) biogeochemical cycle. This work investigated the transformation process of FeS-As coprecipitates, the concurrent behavior, and the speciation of associated As under anoxic conditions. The results showed that FeS-As coprecipitates could convert to greigite and pyrite.
View Article and Find Full Text PDFArsenic speciation in freshwater fish using high performance liquid chromatography and inductively coupled plasma mass spectrometry.
J Environ Sci (China)
July 2025
Department of Chemistry, Faculty of Science, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, Alberta, T6G 2G2, Canada; Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, 10-102 Clinical Sciences Building, Edmonton, Alberta, T6G 2G3, Canada. Electronic address:
Arsenic speciation in freshwater fish is crucial for providing meaningful consumption guidelines that allow the public to make informed decisions regarding its consumption. While marine fish have attracted much research interest due to their higher arsenic content, research on freshwater fish is limited due to the challenges in quantifying and identifying arsenic species present at trace levels. We describe here a sensitive method and its application to the quantification of arsenic species in freshwater fish.
View Article and Find Full Text PDFArsenic speciation in more than 1600 freshwater fish samples from fifty-three waterbodies in Alberta, Canada.
J Environ Sci (China)
July 2025
Department of Chemistry, Faculty of Science, University of Alberta, 11227 Saskatchewan Dr NW, Edmonton, Alberta, T6G 2G2, Canada; Division of Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, T6G 2G3, Canada. Electronic address:
We report here arsenic speciation in 1643 freshwater fish samples, representing 14 common fish species from 53 waterbodies in Alberta, Canada. Arsenic species were extracted from fish muscle tissue. Arsenic species in the extracts were separated using anion-exchange high-performance liquid chromatography (HPLC) and quantified using inductively coupled plasma mass spectrometry (ICPMS).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!