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Polychlorinated biphenyls (PCBs) are organic compounds composed of chlorine atoms bonded to biphenyl, a molecule consisting of two benzene rings each containing six carbons. PCBs are odorless, tasteless, clear to light yellow viscous liquids. Production of PCBs is prohibited due to high toxicity. PCBs are classified as persistent organic pollutants that accumulate in the body of animals and cause environmental pollution.
There are 209 different derivatives of PCBs depending on the position of the chlorine atoms. PCBs; It is used in additives in oils used in electrical and electronic devices, hydraulic machines, as it has high chemical stability, fire resistance and high dielectric coefficient.
PCBs can be produced directly as well as they emerge as by-products after processes such as PVC production, pesticide production or waste incineration.
The Turkish Food Codex Communiqué on Sampling, Sample Preparation and Analysis Method Criteria for the Official Control of the Level of Dioxin-like Polychlorinated Biphenyls and Non-Dioxin-Like Polychlorinated Biphenyls in Certain Foods has been published by the Ministry of Food, Agriculture and Livestock. This communique regulates sampling and analysis methods to control the level of polychlorinated biphenyls in certain foods.
In the aforementioned communiqué, verification methods for the identification and calculation of PCBs in meat, milk, fish, oils and feedstuffs are specified.
