Transboundary transport of organophosphate esters from Nepal to the Tibetan Plateau: Sources, distribution, and monsoon-driven pathways

Key Points

• Organophosphate esters were identified as primary pollutants found in the Tibetan Plateau.
• Concentrations reached up to 150 ng/m3, highlighting significant transboundary transport effects.
• Observational analysis across multiple sites showed seasonal variations driven by monsoon patterns.
• This indicates ongoing environmental concerns that may affect local ecosystems and health.