Estimation of bioaccessibility of heavy metals in oysters using the physiologically based extraction test

Intawongse, Marisa, Sriraksa, Supatsa, Dean, John and Kongchana, Pinpong (2012) Estimation of bioaccessibility of heavy metals in oysters using the physiologically based extraction test. Instrumentation Science & Technology, 40 (4). pp. 372-383. ISSN 1073-9149

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Official URL: http://dx.doi.org/10.1080/10739149.2012.673200

Abstract

A physiologically based extraction test (PBET) was applied to estimate the oral bioaccessibility of cadmium, mercury, and lead from oyster tissues. The PBET measures the fraction of a metal that is solubilized from the sample under simulated gastric and intestinal conditions. Both gastric and intestinal extracted solutions as well as microwave digested residue were analyzed by inductively coupled plasma-optical emission spectrometry (ICP-OES). The bio accessibilities (relative to the total metal concentrations) of cadmium and lead in the oyster samples were 33.8–59.2% and 28.3–51.4%, respectively. The bioaccessibility of mercury was non detectable (<0.019 mg=kg wet weight) due to the relatively low levels of mercury in the oyster samples (<0.110 mg=kg wet weight).

Item Type: Article
Uncontrolled Keywords: ICP-OES, in vitro digestion, oysters, bioaccessibility, heavy metals
Subjects: F100 Chemistry
Department: Faculties > Health and Life Sciences > School of Life Sciences > Applied Sciences
Depositing User: Linda Barlow
Date Deposited: 20 Jun 2012 09:45
Last Modified: 10 Aug 2015 11:37
URI: http://nrl.northumbria.ac.uk/id/eprint/7724

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