Survey of arsenic content in edible seaweeds and their health risk assessment
Open accessAbstract
Since humans are especially sensitive to arsenic exposure, predominantly through diet, a strict control of the most widely consumed seaweeds is mandatory. Total arsenic contents and arsenic species in twenty-five different seaweeds from five different origins were studied. Seaweeds selected, included Phaeophyta (brown seaweed), Chlorophyta (green seaweed) and Rhodophyta (red seaweed) genera. The highest arsenic content appears in the Phaeophyta seaweed in the range from 11 to 162 mg kg−1 dried weight. Arsenosugars were found to be the predominant species of arsenic in most seaweeds, being up to 99.7% of total arsenic in some samples. The arsenic dietary intakes for seaweeds studied were assessed and the Target Hazard Quotients (THQ) and the Target Cancer Risk (TCR) were calculated, taking into account inorganic arsenic contents (iAs). iAs species in seaweeds showed low risk of arsenic intake except for Hizikia fusiforme samples.
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Laminaria ochroleuca exhibited average As concentrations of 76.8 mg/kg in China, 52.5 mg/kg in Korea, and 41.1 mg/kg in Spain.
“On a broader scale, Laminaria ochroleuca exhibited average As concentrations of 76.8 mg/kg in China, 52.5 mg/kg in Korea, and 41.1 mg/kg in Spain [227], demonstrating how regional ecological conditions and species traits magnify disparities in heavy metal levels.”
From Navigating the potential of algal peptides: health effects, market applications, and scientific challenges (2026) · cites this paper as [227]
Variations in heavy metal levels complicate risk assessment and highlight the need for precaution in consumption, particularly when algae are consumed frequently or in concentrated forms such as supplements.
“These variations complicate risk assessment and highlight the need for precaution in consumption, particularly when algae are consumed frequently or in concentrated forms such as supplements [227].”
From Navigating the potential of algal peptides: health effects, market applications, and scientific challenges (2026) · cites this paper as [227]
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- Authors
- Yu, Y., Morales-Rodriguez, A., Zhou, G., Barrón, D., Sahuquillo, À., & López-Sánchez, J. F.
- Affiliations
- Yangtze Normal University (CN)
- Southwest University (CN)
- Universitat de Barcelona (ES)
- ORCID
- Venue
- Food and Chemical Toxicology
- Publisher
- Elsevier BV
- Published
- 2024-05
- Volume
- 187
- Pages
- 114603
- ISSN
- 0278-6915 (ISSN-L)
- OpenAlex
- W4392878454
- Cited by
- 39
- References
- 38
- Citations by year
- 2026: 17 · 2025: 16 · 2024: 6
- FWCI
- 5.15
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- Food and Chemical Toxicology (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Dipòsit Digital de la Universitat de Barcelona (Universitat de Barcelona) (submittedVersion, cc-by-nc-nd)
- Funders
- Chongqing Municipal Education Commission (KJQN202301418, KJQN202201438)
- Topics
- Physical Sciences › Environmental Science › Environmental Chemistry › Arsenic contamination and mitigation
- Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
- Keywords
- arsenic, seaweed, dietary arsenic intake, arsenic speciation, arsenosugars, inorganic arsenic, health risk assessment, target hazard quotient, target cancer risk, brown algae, green seaweed, red seaweed, Hizikia fusiformis, food safety
- MeSH terms
- Edible Seaweeds, Phaeophyceae, Arsenic, Arsenicals, Humans, Seaweed, Vegetables, Risk Assessment, Sargassum
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