Interlaboratory Comparison on POPs in Food 2025
Report
|Published
The Dioxin Team has decided to cease the organization of the Interlaboratory Comparison on POPs in Food as of 2026.
Key message
The Dioxin Team has decided to cease the organization of the Interlaboratory Comparison on POPs in Food as of 2026. We would like to sincerely thank all participants for their valuable contributions over the years.
If you wish to order reference samples from 2025 or previous rounds, please complete the ordering form provided in the link and return it to us at dioxin@fhi.no
Summary
The 26th round of the Interlaboratory Comparison on POPs in Food was conducted in 2025
by the Norwegian Institute of Public Health (NIPH). The study included the determination
of the 2,3,7,8-chlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs), as well as
dioxin-like non-ortho and mono-ortho chlorinated biphenyls (PCBs) in three different food
items. Additionally, the participating laboratories could determine the concentrations of six
indicator PCBs, polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecanes
(HBCDs) in the same food samples.
This year the fish sample for determination of poly- and perfluoroalkyl substances (PFASs)
was a Halibut sample, designated for the determination of the following poly- and
perfluoroalkyl substances: perfluorooctanesulfonate (PFOS), perfluorohexanesulfonate
(PFHxS), perfluorooctanoate (PFOA), perfluorononanoate (PFNA), perfluorodecanoate
(PFDA) and perfluoroundecanoate (PFUnDA).
The objectives of this interlaboratory comparison study were
A. To offer a tool for quality assurance to the participating laboratories
B. To assess the between-laboratory reproducibility
C. To assess the readiness of expert laboratories worldwide to determine levels of
chlorinated and brominated persistent organic pollutants, as well as for PFASs, in
regular foodstuffs.