Polychlorinated dibenzo-p-dioxins and dibenzofurans in surface sediments from pearl river delta in China

• Published in: Bulletin of environmental contamination and toxicology Vol. 66; no. 4; pp. 504 - 507
• Main Authors: ZHENG, M.-H, CHU, S.-G, SHENG, G.-Y, MIN, Y.-S, BAO, Z.-C, XU, X.-B
• Format: Journal Article
• Language: English
• Published: New York, NY Springer-Verlag 01.04.2001; Springer Nature B.V
• Subjects: Animal, plant and microbial ecology; Applied ecology; Benzofurans - analysis; Biological and medical sciences; Brackish; China; Ecotoxicology, biological effects of pollution; Environmental Monitoring; Environmental Pollutants - analysis; Fresh water environment; Fundamental and applied biological sciences. Psychology; Geologic Sediments - chemistry; Polychlorinated Dibenzodioxins - analogs & derivatives; Polychlorinated Dibenzodioxins - analysis; Soil Pollutants - analysis; Asia; China; China, People's Rep., Zhu R; China, People's Rep; China, People's Rep., Pearl R. Delta; Freshwater environment; Delta; Pollutant behavior; Chlorine Organic compounds; Stream; Rivers; Sediments
• ISSN: 0007-4861; 1432-0800
• DOI: 10.1007/s001280035

Sediment samples were collected from eight different locations in the Pearl River Delta, China, and levels of PCDDs and PCDFs were measured. Six of 17 congeners were detected, with octaCDD found at the highest concentration, followed by 1,2,3,4,7,8,9-heptaCDD and octaCDF. Toxic equivalent values ranged 0.6 17.5 pg/g in sediments from the eight sites. Levels of octaCDD decreased from the upper reaches to the lower reaches of the river.