Bioaccumulative characteristics of hexabromocyclododecanes in freshwater species from an electronic waste recycling area in China

Yang, Fangxing; Luo, Chao; Wen, Shi Wu; Zhang, Xian; Xu, Ying

doi:10.1016/j.chemosphere.2009.05.031

Cited by 36 publications

(40 citation statements)

References 20 publications

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“…Extraction and cleanup of plant samples for HBCD analysis were based on the method of Zhang et al 23 with some modifications. Each sample (0.1−0.5 g dry weight) was Soxhlet extracted for 24 h using 100 mL of hexane/acetone (1:1, v/v) at 65°C after being spiked with 13 C-α-HBCD and 13 C-γ-HBCD.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

Diastereomer-Specific Uptake, Translocation, and Toxicity of Hexabromocyclododecane Diastereoisomers to Maize

Wang

Huang

et al. 2012

J. Agric. Food Chem.

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Hexabromocyclododecane (HBCD), a brominated flame retardant, has become a ubiquitous contaminant due to its wide application, persistence, and toxicity. HBCD diastereoisomers have different physical and chemical properties and may differ in their bioaccumulation and toxicity in plants. Accumulation and toxicity of α-, β-, and γ-HBCDs in maize were investigated in the present study. The accumulation was in the order β-HBCD > α-HBCD > γ-HBCD in roots and β-HBCD > γ-HBCD > α-HBCD in shoots. Both the inhibitory effect of the diastereoisomers on the early development of maize and the intensities of hydroxyl radical and histone H2AX phosphorylation in maize exposed to 2 μg L −1 HBCD followed the order α-HBCD > β-HBCD > γ-HBCD, indicating the diastereomer-specific oxidative stress and DNA damage in maize. It was further confirmed that the generation of reactive oxygen species was one, but not the only, mechanism for DNA damage in maize exposed to HBCDs.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

Diastereomer-Specific Uptake, Translocation, and Toxicity of Hexabromocyclododecane Diastereoisomers to Maize

Wang

Huang

et al. 2012

J. Agric. Food Chem.

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“…Variations in isomer profiles have frequently been reported in soil and sediment samples in other studies. 10,22,27,[30][31][32] Marvin Figure 2. Relationship between the logarithm of total HBCD concentrations and that of distance from the emission source in surrounding areas of the QY e-waste recycling site.…”

Section: ' Introductionmentioning

confidence: 99%

“…21 Because of limited data, HBCD levels in sediments were also included for comparison. [22][23][24][25][26][27][28][29][30][31][32] Most studies on sediment HBCDs have been performed in Europe, and the results showed different concentrations. The studies carried out near production sites or in the vicinity of industrial users of HBCDs found significantly higher levels, ranging from 38 to 1700 ng/g dw.…”

Section: ' Introductionmentioning

confidence: 99%

Hexabromocyclododecanes in Surface Soils from E-Waste Recycling Areas and Industrial Areas in South China: Concentrations, Diastereoisomer- and Enantiomer-Specific Profiles, and Inventory

Gao

Wang

et al. 2011

Environ. Sci. Technol.

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Hexabromocyclododecanes (HBCDs) are raising concern because of their potential persistence, bioaccumulation, and toxicity. In this study, we investigated the concentrations, diastereoisomer- and enantiomer-specific profiles, and mass inventories of HBCDs in 90 surface soils from two e-waste recycling areas (Qingyuan, Guiyu) and from industrial areas in South China. The mean concentrations of total HBCDs in the surface soils ranged from 0.22 to 0.79 and from 0.31 to 9.99 ng/g dw for two surrounding e-waste recycling sites and industrial areas, respectively. The highest total HBCD concentration (284 ng/g dw) was found at the e-waste recycling site in Qingyuan, while total HBCD levels fell dramatically with increasing distance from the recycling site, suggesting that the e-waste recycling activities were an important source of HBCDs. The diastereoisomer profiles in 75 of the 90 soil samples differed from those of the commercial products. The mean enantiomeric fraction values for α-, β-, and γ-HBCDs in soils ranged from 0.503(0.010) to 0.507(0.003), 0.494(0.003) to 0.506(0.009), and 0.502(0.003) to 0.511(0.006), respectively, suggesting that there was no stereoselective transformation of the three diastereoisomers. The mass inventories of HBCDs gave preliminarily estimates of 3.42 kg and 1.84 tonnes for the e-waste recycling areas and industrial areas, respectively. It is notable that the diasteroisomer and enantiomer profiles of this study failed to distinguish definitely that the isomeric transformation occurred during the product processing or in the environmental matrix. Further laboratory studies on abiotic and biotic transformation are needed to clarify this issue.

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“…Extraction and cleanup of plant samples for HBCD analysis were based on the method of Han et al (2010) and Zhang et al (2009) with some modifications. Each sample (0.1-0.5 g dry weight) was ultrasonic-assisted extracted for 2 hr using 20 mL of ethyl acetate at 60°C after spiking with 13 C-α-HBCD and 13 C-γ-HBCD.…”

Section: Extraction and Cleanup Of Plant Samplesmentioning

confidence: 99%

“…Due to its widespread use, HBCD has been detected widely in environmental and biological matrices. HBCD was first found in fish and sediment in the Swedish River Viskan in 1998 (Sellström et al, 1998), and since then it has been detected in a wide variety of biota and abiotic samples such as rainbow trout, loach, water, sewage sludge, soils and sediments (Haukås et al, 2009;Zhang et al, 2009;Hale et al, 2006;Wang et al, 2009;Li et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Accumulation and phytotoxicity of technical hexabromocyclododecane in maize

Huang

Zhang

2016

Journal of Environmental Sciences

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Bioaccumulative characteristics of hexabromocyclododecanes in freshwater species from an electronic waste recycling area in China

Cited by 36 publications

References 20 publications

Diastereomer-Specific Uptake, Translocation, and Toxicity of Hexabromocyclododecane Diastereoisomers to Maize

Diastereomer-Specific Uptake, Translocation, and Toxicity of Hexabromocyclododecane Diastereoisomers to Maize

Hexabromocyclododecanes in Surface Soils from E-Waste Recycling Areas and Industrial Areas in South China: Concentrations, Diastereoisomer- and Enantiomer-Specific Profiles, and Inventory

Accumulation and phytotoxicity of technical hexabromocyclododecane in maize

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