SURVEY ON PCDDs AND PCDFs IN SEDIMENTS AND SOILs IN YA-ER LAKE AREA, CHINA

• Published in: Chinese journal of oceanology and limnology Vol. 16; no. 1; pp. 45 - 53
• Main Author: 吴文忠 K.-W.Schramm B.Henkelmann 徐盈 张甬元 A.Kettrup
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Nature B.V 01.03.1998
• Subjects: Agricultural land; Chlorinated hydrocarbons; Congeners; Contaminated sediments; Dibenzofuran; Freshwater; Lake; Lakes; Limnology; PBrDD/F; PCDD/F; Polychlorinated dibenzodioxins; Polychlorinated dibenzofurans; Sediment; Sediment pollution; Sediments; soil; Soil contamination; Soil pollution; Soils; Studies; survey; Toxins; Ya-Er; China, Peoples, Rep., Ya-Er L
• ISSN: 0254-4059; 2096-5508; 1993-5005; 2523-3521
• DOI: 10.1007/BF02848216

For the first time in P. R. China, six locations were investigated regarding the impact of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in contaminated sediments and soils in the Ya-Er Lake area. Total concentrations of PCDDs from 70 to 1.6×10^sup 5^ ng/kg dw, median 7.9×10^sup 4^ ng/kg dw and of PCDFs from 1.8 to 1.8×10^sup 4^ ng/kg dw, median 9.2×10^sup 3^ ng/kg dw were measured. The international toxic equivalents (I-TEQ) varied from 0.14 to 8.1×10^sup 2^ ng/kg dw, median 4.1×10^sup 2^ ng/kg dw. The PCDDs pattern showed that the concentration of OCDD was significantly higher than that of the low chlorinated congeners. The results indicated that parts of Ya-Er Lake are heavily polluted by these chlorinated compounds. Comparison of our results with the pattern of sediments showed significant differences. The results are of special importance because the pollution that affected Ya-Er Lake may spread to agricultural land and the Changjiang River.[PUBLICATION ABSTRACT]