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The fluxes of SP4-8 CDD/Fs increased gradually since 1951 and STEQ fluxes increased significantly since 1980. The sources of PCDD/Fs in Qingdao coastal sea were constant relatively and were guessed to be the sewage sluge and atmospheric deposition.
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SP4-8CDD/Fs沉积通量从1951年起逐渐增大;STEQ沉积通量从1980年显著增大.;青岛近海PCDD/Fs的来源相对恒定;推测为城市污水污泥和大气沉降
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