POPs in Baltic salmon

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Question

What are the levels of persistent organic pollutants (POPs) in Baltic sea salmon?

Answer

Answer is under work and results are preliminary.

POP concentrations in Baltic sea fish have been measured from samples collected in EU-kalat project. The original data of individual fish samples is accessible through Opasnet base. This data is used here for a Bayesian model to calculate posterior concentration distributions (median and SD) for each congener. This data is then translated into TEQ, and can be used for health benefit assessment of Baltic salmon.

Posterior congener median concentrations are presented below for each compound group (PCDD/F, PCB, BDE) analysed in EU-kalat.

Based on the mean posterior concentrations of individual congeners, TEQs are calculated for each congener by using TEF values by WHO and plotted below.

Median posterior TEQ salmon.jpg

You can print out the numerical results of prior and posterior congener concentrations below. In addition the possible updated versions of the above figures are printed out.

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Rationale

This model takes in measured congener concentrations of POPs in Baltic salmon in northern part of Baltic sea (Bothnian Bay, Bothnian Sea, Åland Sea, Gulf of Finland). Measured data is used for Bayesian model to produce posterior medians and sds for each congener and also to calculate TEQ values. Numerical results are saved as variables to Opasnetbase and result figures are presented above in the Answer section.

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See also

References


Related files

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POPs in Baltic salmon. Opasnet . [1]. Accessed 16 Jan 2019.