Related Experiment Video
Updated: Jun 23, 2026
09:01
An Ultra-clean Multilayer Apparatus for Collecting Size Fractionated Marine Plankton and Suspended Particles
Published on: April 19, 2018
PBDD/Fs in surface sediments from the East River, China
1Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, P.O. Box 1131, 510640, Guangzhou, Guangdong, People's Republic of China. renmanrm@163.com
Summary
Polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) were detected in East River sediments, with polybrominated dibenzofurans (PBDFs) being dominant. Higher concentrations in the Shima River suggest risks from brominated flame retardants in electronics.
Area of Science:
- Environmental Chemistry
- Ecotoxicology
Background:
- Polybrominated dibenzo-p-dioxins and dibenzofurans (PBDD/Fs) are persistent organic pollutants.
- Sediment contamination by PBDD/Fs is a growing environmental concern.
Purpose of the Study:
- To investigate the contamination levels of PBDD/Fs in surface sediments of the East River.
- To identify the primary contributors to the toxic equivalent (TEQ) concentrations.
- To assess potential ecological risks associated with PBDD/F pollution.
Main Methods:
- Analysis of eight 2,3,7,8-substituted tetra- to hexa- PBDD/Fs congeners.
- Quantification of PBDD/F concentrations and toxic equivalent (TEQ) concentrations.
- Comparison of PBDD/F levels with other dioxin-like compounds.
Main Results:
- PBDD/F concentrations ranged from 0.32-110 pg g(-1) (mean 13 pg g(-1)) with TEQ concentrations from 0.087-18 pg I-TEQ g(-1) (mean 2 pg I-TEQ g(-1)).
- Polybrominated dibenzofurans (PBDFs) were the dominant congeners.
- 2,3,4,7,8-PeBDF was the major contributor to total TEQ (47%-77%).
- Sediments from the Shima River showed higher PBDD/F concentrations.
Conclusions:
- Sediments in the East River are contaminated with PBDD/Fs, primarily PBDFs.
- The presence of PBDD/Fs, particularly in the Shima River, may be linked to the use of brominated flame retardants (BFRs) in the electrical and electronics industries.
- Elevated PBDD/F levels pose a potential risk to the ecological system.
