Quantitative biomonitoring of polycyclic aromatic compounds (PACs) using the Sydney rock oyster (Saccostrea glomerata)

Quantitative biomonitoring of polycyclic aromatic compounds (PACs) using the Sydney rock oyster (Saccostrea glomerata).

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Item Type: Article
Status: Published
Official URL: https://doi.org/10.1016/j.scitotenv.2020.140497
Journal or Publication Title: Science of The Total Environment
Volume: 742
Page Range: p. 140497
Date: 2020
Divisions: UTS Centre for Inflammation
Depositing User: General Admin
Identification Number: 10.1016/j.scitotenv.2020.140497
ISSN: 00489697
Date Deposited: 04 Jan 2021 03:14

Increasing our understanding of the bioavailable fractions of polycyclic aromatic compounds (PACs) in an aquatic environment is important for the assessment of the environmental and human health risks posed by PACs. More importantly, the behaviour of polar polycyclic aromatic hydrocarbons (polar PAHs), which are metabolites of legacy PAHs, are yet to be understood. We, therefore, carried out a study involving Sydney rock oysters (Saccostrea glomerata) sourced from two locations, that had been exposed to PAH contamination, within an Australian south-east estuary. Biomonitoring of these oysters, following relocation from the estuary to a relatively isolated waterway, was done at 24 and 72 h after deployment and subsequently at 7, 14, 28, 52 and 86 days. Control samples from Camden Haven River were sampled for PAC analyses just before deployment, after 28 days and at the end of the study (day 86). Lipid-normalised concentrations in oyster tissues across the 86-day sampling duration, elimination rate constants (k2), biological half-lives (t1/2) and time required to reach 95% of steady-state (t95) were reported for parent PAHs and the less-monitored polar PAHs including nitrated/oxygenated/heterocyclic PAHs (NPAHs, oxyPAHs and HPAHs) for the three differently sourced oyster types. Most of the depurating PAHs and NPAHs, as well as 9-FLO (oxyPAH), had k2 values significantly different from zero (p < 0.05). All other oxyPAHs and HPAHs showed no clear depuration, with their concentrations remaining similar. The non-depuration of polar PAHs from oyster tissues could imply greater human health risk compared to their parent analogues.

Idowu, Oluyoye
Tran, Thi Kim Anh
Webster, Grant
Chapman, Ian
Baker, Phil
Farrel, Hazel
Zammit, Anthony
Semple, Kirk T.
Hansbro, Phil M.
O'Connor, Wayne
Thavamani, Palanisami
Last Modified: 04 Jan 2021 03:14
URI: https://eprints.centenary.org.au/id/eprint/748

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