Atmospheric (Dry + wet) deposition of PCDD/Fs in Taiwan

Air pollution is becoming increasingly worse with economic development, and atmospheric deposition is an important mechanism for the removal of air pollutants. In 2017, the average dry deposition fluxes of total-PCDD/Fs-WHO₂₀₀₅-TEQ in various areas in Taiwan ranged between 57 (Lienchiang County in autumn) and 589 pg WHO₂₀₀₅-TEQ m^–2 month^–1 (Keelung City in winter), with an average of 221 pg WHO₂₀₀₅-TEQ m^–2 month^–1. The average total deposition fluxes of total-PCDD/Fs-WHO₂₀₀₅-TEQ in various areas in Taiwan ranged between 65 (Lienchiang County in autumn) and 681 pg WHO₂₀₀₅-TEQ m^–2 month^–1 (Keelung City in winter), with an average of 263 pg WHO₂₀₀₅-TEQ m^–2 month^–1. The fractions of dry deposition fluxes contributing to the total deposition fluxes ranged between 37.8% (Yilan County in winter) and 99.9% (Kaohsiung City in winter), with an average of 82.1%. This study provided valuable information for the control strategies of PCDD/Fs.