Monitoring of organic pollutants in Choromytilus meridionalis and Mytilus galloprovincialis from aquaculture facilities in Saldanha Bay, South Africa

Persistent organic pollutants are lipophilic contaminants which can accumulate in marine food chains, causing health issues for human consumers. Farmed C. meridionalis and M. galloprovincialis were collected and analysed for POPs, extracted using QuEChERS method and analysed via GC-MS/MS. Detected O...

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Bibliographic Details
Published in:Marine pollution bulletin 2019-12, Vol.149, p.110637, Article 110637
Main Authors: Firth, D.C., O'Neill, B., Salie, K., Hoffman, L.C.
Format: Article
Language:English
Subjects:
Anthracene
Aquaculture
Aquaculture facilities
Aromatic hydrocarbons
Benzo(a)pyrene
Chlordane
Contaminants
Dieldrin
Dry weight
Endosulfan
Environmental monitoring
Fluoranthene
Food chains
Food contamination
Insecticides
International regulations
Lipophilic
Marine molluscs
Marine pollution
Mussels
Mytilus galloprovincialis
Organochlorine pesticides
PCB
Permethrin
Persistent organic pollutants
Pollutants
Pollution monitoring
Polychlorinated biphenyls
Polycyclic aromatic hydrocarbons
Pyrene
Seasonal variation
Seasonal variations
South Africa
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Summary:Persistent organic pollutants are lipophilic contaminants which can accumulate in marine food chains, causing health issues for human consumers. Farmed C. meridionalis and M. galloprovincialis were collected and analysed for POPs, extracted using QuEChERS method and analysed via GC-MS/MS. Detected OCPs (trans-permethrin > cis-permethrin > dieldrin > chlordane > chloro-benzilate > endosulfan > nonachlor > DDD) were highest contributors to POP contamination (average: 0.7 – 48 ng/g dry weight), followed by PAHs (flourene > pyrene > fluoranthene > benzo(a)pyrene > benz(a)anthracene; average: 1 – 13.4 ng/g d.w.), and PCBs (180 > 149 > 28 > 110 > 153 > 52 > 18 > 44 > 118 > 138; average: 0.3 – 3.2 ng/g d.w). Temporal differences were detected in both species for cis- and trans-permethrin, and PCBs 18, 118 and 149, with seasonal changes linked gametogenic cycle (fat) of mussels. All POP contaminants were below maximum limits of international regulations. •Expanding heavy industry in Saldanha Bay threatens future of mussel farming.•Season influenced accumulation of certain OCPs and PCBs in mussels.•All detected POPs were within international maximum limits for seafood.•Long-term pollution monitoring must include POPs to protect shellfish farming industry.
ISSN:0025-326X
1879-3363
DOI:10.1016/j.marpolbul.2019.110637