Influence of bioturbation on bioavailability and toxicity of PAHs in sediment from an electronic waste recycling site in South China

Pang, Junxiao; Sun, Bin; Li, Huizhen; Mehler, W. Tyler; You, Jing

doi:10.1016/j.ecoenv.2012.07.007

Cited by 19 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been shown that sediment-dwelling organisms promote the release of contaminants across the benthic-pelagic ecosystem boundary, thereby affecting the exposure to and uptake of sediment associated contaminants at the sediment-water interface by themselves and other organisms (Pang et al, 2012). This way, bioturbation activity may subsequently contribute to species specific sensitivities to sediment associated compounds (Milani et al, 2003;De Lange et al, 2005;Wang, 2013).…”

Section: Introductionmentioning

confidence: 99%

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Meer

Baat

Verdonschot

et al. 2017

Front. Environ. Sci.

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Meer

Baat

Verdonschot

et al. 2017

Front. Environ. Sci.

View full text Add to dashboard Cite

Combining Passive Sampling with Toxicological Characterization of Complex Mixtures of Pollutants from the Aquatic Environment

Jahnke

Witt

Schäfer

et al. 2016

In Vitro Environmental Toxicology - Concepts, Application and Assessment

View full text Add to dashboard Cite

The combination of polymer-based passive sampling to collect complex environmental mixtures of pollutants, the transfer of these mixtures into bioassays, and their related toxicological characterization is still in its infancy. However, this approach has considerable potential to improve environmental hazard and risk assessment for two reasons. First, the passive sampler collects a broad range of chemicals representing the fraction of compounds available for diffusion and (bio)uptake, excluding a large part of the matrix; thus, extensive sample cleanup which could discriminate certain compounds can be avoided. Second, the toxicological characterization of samples using bioassays is complementary to chemical (target) analysis within environmental monitoring because it captures all chemicals exerting the same mode of toxic action and acting jointly in mixtures, thus providing a comprehensive picture of their overall combined effects. The scientific literature describes a range of examples from the water phase where passive sampling is usually carried out in the kinetic uptake regime for most chemicals although some may already have reached equilibrium. The composition of the chemical mixture changes from the water phase to the passive sampling material because of kinetic effects and polymer/water partition coefficients which depend on the chemicals' hydrophobicity. In contrast, only a few applications in sediment and biota have been described, but amongst these some pioneering studies have demonstrated the feasibility and potential of this combined approach. This chapter gives an overview of what has been carried out in this research area, focusing on opportunities and challenges, and points out desirable future developments with a focus on the importance of choosing a suitable combination of sampling and dosing to transfer (or re-establish) the environmental mixture into the bioassay.

show abstract

Characterization and Distribution of Heavy Metals, Polybrominated Diphenyl Ethers and Perfluoroalkyl Substances in Surface Sediment from the Dayan River, South China

Hai

et al. 2015

Bull Environ Contam Toxicol

View full text Add to dashboard Cite

In this study, surface sediment samples were collected from 11 sites in the Dayan River near an electronic waste site in Qingyuan. Heavy metals, polychlorinated biphenyls (PBDEs) and perfluoroalkyl substances (PFASs) were detected. The concentrations of Cu, Zn, Pb and Cd ranged from 12.1 to 641, 47.1 to 891, 39.2 to 641, 0.12 to 2.07 mg/kg dw, respectively. Total PBDEs ranged between 0.052 and 126.64 ng/g dw. BDE-47 and BDE-99 were the predominant PBDEs. The concentrations of PFASs in sediments ranged between 0.01 and 3.72 ng/g dw. The perfluorooctane sulfonate was predominantly PFASs. The strong positive correlations among Cu, Zn, perfluorooctanoic acid and PBDEs indicate that these contaminants were associated with each other and may share a common anthropogenic source in the sediments of the Dayan River.

show abstract

Influence of bioturbation on bioavailability and toxicity of PAHs in sediment from an electronic waste recycling site in South China

Cited by 19 publications

References 39 publications

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Benthic Invertebrate Bioturbation Activity Determines Species Specific Sensitivity to Sediment Contamination

Combining Passive Sampling with Toxicological Characterization of Complex Mixtures of Pollutants from the Aquatic Environment

Characterization and Distribution of Heavy Metals, Polybrominated Diphenyl Ethers and Perfluoroalkyl Substances in Surface Sediment from the Dayan River, South China

Contact Info

Product

Resources

About