Metals accumulation in edible marine algae collected from Thondi coast of Palk Bay, Southeastern India
Abstract
This study aimed to monitor the concentrations of metals including Cd, Pb, Cu and Zn in commercially important and commonly edible brown, red and green algal species collected from Thondi coast, southeast India. Green seaweed Chaetomorpha linum contained higher (Cd 8.51 mg kg-1, Pb 5.24 mg kg-1, Cu 15.38 mg kg-1, and Zn 22.34 mg kg-1) concentrations of metals than other tested seaweed samples. The concentrations of metals significantly varied within and between the investigated species of seaweed samples (P < 0.05). It was revealed that Cd, Pb, Cu and Zn metals were present in the species of seaweeds at different concentration. The residual levels of metals were less than the maximum allowable levels specified for human consumption compared to PTWIs, JECFA, FAO/WHO, FSSAI and EC. This study suggested that exposure to the analysed metals (Cd, Pb, Cu and Zn) through seaweeds consumption does not raise serious health effects to consumers and it is safe for human consumption.
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Environmental factors such as salinity, pH, sunlight exposure, nutrient availability, water currents, and seasonal changes contribute to large geographic disparities in contamination levels.
“Environmental factors such as salinity, pH, sunlight exposure, nutrient availability, water currents, and seasonal changes further contribute to large geographic disparities in contamination levels [224,225].”
From Navigating the potential of algal peptides: health effects, market applications, and scientific challenges (2026) · cites this paper as [225]
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- Authors
- Arulkumar, A., Nigariga, P., Paramasivam, S., & Rajaram, R.
- Affiliations
- Alagappa University (IN)
- Bharathidasan University (IN)
- Corresponding author
- Paramasivam, Sadayan
- Venue
- Chemosphere
- Publisher
- Elsevier BV
- Published
- 2019-04
- Volume
- 221
- Pages
- 856-862
- ISSN
- 0045-6535 (ISSN-L)
- OpenAlex
- W2907803974
- Cited by
- 69
- References
- 44
- Citations by year
- 2026: 12 · 2025: 8 · 2024: 8 · 2023: 10 · 2022: 11 · 2021: 12 · 2020: 6 · 2019: 2
- FWCI
- 3.35
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Chemosphere (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Ministry of Earth Science, Government of India (MoES/36/OOIS/Extra./9/2013)
- Topics
- Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
- Physical Sciences › Environmental Science › Pollution › Heavy metals in environment
- Physical Sciences › Chemistry › Analytical Chemistry › Heavy Metals in Plants
- Keywords
- heavy metal accumulation, brown algae, red algae, green algae, Chaetomorpha linum, cadmium, lead, copper, zinc, seafood safety, dietary exposure, Palk Bay
- MeSH terms
- Chlorophyta, Environmental Exposure, Food Analysis, Humans, India, Seaweed, Water Pollutants, Chemical, Metals, Heavy, Bays
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