Partition of polychlorinated dibenzo-p-dioxins and dibenzofurans distribution in water in both suspended solid and dissolved phases.
The contents of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) were measured in soil and water impacted by a chemical factory (chloralkali and pentachlorophenol) and both the PCDD/F contents in soil (14.4 mu g I-TEQ kg(-1)) and water (11.97 pg I-TEQ L(-1)) were heavily contaminated. Additionally, the PCDD/F distributions in the aquatic environment (suspended solid and dissolved phases) were investigated by performing a water tank experiment with 30 g of soil and 20 L of water. Moreover, the effects of PCDD/F distributions in water were estimated base on three soil sizes (26, 180 and 250 mu m). Analytical results indicated that the PCDD/F content in the suspended solid and dissolved phases was 2.19 mu g I-TEQ kg(-1) and 2.34 pg I-TEQ L(-1), respectively, or 85.11% and 14.89%, respectively. The PCDD/F distribution in the suspended solid phase was dominant, while its distribution was independent of soil size. Additionally, placing soil with a high PCDD/F content in water increased the PCDD/F content in suspended solid phase. Moreover, the equation developed in this study can accurately predict the PCDD/F partition between the suspended solid and dissolved phases.
Chen
Ming W
MW
Department of Environmental Engineering, National Cheng Kung University, Tainan, Taiwan.
Wu
Yee L
YL
Li
Hsing W
HW
Wang
Lin C
LC
Chien
Guo-Ping C
GP
D001572:Benzofurans / Q000302:isolation & purification*; D000072338:Dibenzofurans, Polychlorinated; D057230:Limit of Detection; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000302:isolation & purification; D012989:Soil Pollutants / Q000302:isolation & purification*; D012995:Solubility; D014874:Water Pollutants, Chemical / Q000302:isolation & purification*
D001572:Benzofurans; D000072338:Dibenzofurans, Polychlorinated; D000072317:Polychlorinated Dibenzodioxins; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical