期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 670, 期 -, 页码 760-769出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2019.03.286
关键词
Chemical equilibrium; Fugacity ratio; SVOCs; Multimedia; Partition coefficient
资金
- Korea Environmental Industry and Technology Institute (KEITI) [2014001370001]
- The Chemical Accident Prevention Technology Development Project - Korea Ministry of Environment (MOE) [2017001970002]
To capture the pollutant distribution status among environmental media and to understand how the distribution varies with the pollutants' properties, we assessed a total of 225 fugacity ratios (FRs) of 45 semi-volatile organic compounds (SVOCs) (polychlorinated dibenzo-p-dioxins/furans (PCDDs/Fs), polybrominated diphenyl ethers (PBDEs), phthalates, and polycydic aromatic hydrocarbons (PAHs)) for five medium pairs (air-water, air-soil, water-sediment, soil-water, and soil-sediment) using the nationwide multimedia monitoring data. For many of the pollutants, fugacity was greatest in air (PCDFs and 6 heavy PAHs) and in sediment (PBDEs and 9 light PAHs) while lowest in soil for most of the pollutants. PAHs and phthalates appeared to be farther away from equilibrium than PCDDs/Fs and PBDEs. The ratios of equilibrium improbable FRs to all the FRs in each chemical group were 2%, 0%, 33.3%, and 28.9% for PCDDs/Fs, PBDEs, phthalates, and PAHs, respectively. FRwater/air of PHAS, FRsoil/air and FRsediment/water of the pollutant groups (except for PBDEs) decreased significantly (p < 0.01) with the partition coefficients, 1/K-air/water (1/K-aw), K-octanol/air (K-oa), and K-octanol/water (K-ow), respectively, even in the field conditions. The findings on FRs values provide valuable clues to identifying the media that would act as sink or source for certain chemicals and to using a more appropriate choice in the coherence test of environmental quality objectives, which should be important considerations in the management of chemical contamination in the environment. (C) 2019 Elsevier B.V. All rights reserved.
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