Congener-specific distribution of dioxin-like compounds and their potential source-related influences in coniferous needles and deciduous leaves across South Korea.

Coniferous needles in South Korea contain significantly higher levels of dioxin-like compounds than deciduous leaves, with PCDD/Fs and PCBs dominating their profiles.

• Why it matters: Understanding pollutant distribution in vegetation helps assess regional airborne contamination and sources, which is crucial for environmental health and policy decisions.
• What they did: The study analyzed levels and congener profiles of PCDD/Fs, PCBs, and PCNs in coniferous needles and deciduous leaves, using archived specimens and comparing concentrations and patterns.
• The result: Findings reveal lipid-driven accumulation and source influences from industrial combustion and atmospheric inputs, demonstrating vegetation's effectiveness for long-term airborne POP monitoring.