Determination of hexabromocyclododecanes in sediments from the Haihe River in China by an optimized HPLC–MS–MS method

Zhao, Yanhui; Li, Qianqian; Xue, Meilan; Huang, Xinchen; Li, Binke; Su, Guoshao; Zheng, Minghui

doi:10.1016/j.jes.2016.07.013

Cited by 11 publications

(7 citation statements)

References 39 publications

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“…The α-HBCD contributions in most of the samples were clearly higher than the α-HBCD contributions in commercial HBCD formulations. High α-HBCD contributions have also been found in sediment samples from other locations [ 22 , 26 , 39 ]. For instance, relatively high α-HBCD contributions of 12.1–100% were found in sediment from three major river drainage basins in Shanghai [ 24 ].…”

Section: Resultsmentioning

confidence: 96%

“…The first 70 mL was discarded, and the second fraction (contained HBCD) was collected for analysis. The cleaned extract was evaporated and transferred into 1.0 mL methanol contained50.0 ng 13 C 12 -labeled α-HBCD [ 21 , 22 ].…”

Section: Methodsmentioning

confidence: 99%

“…The triple quadrupole mass spectrometer was operated in selected reaction monitoring (SRM) mode with electrospray negative ionization mode [ 21 , 22 ]. The capillary temperature and capillary spray voltage were 230 °C and 3.0 kV, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…HBCD concentration and distribution in sediment in China have been investigated in many studies. However, most data on HBCD concentration in sediment in China are for South east and Northeast China, and the concentrations found were less than micrograms per gram of sediment [ 15 , 19 , 21 , 22 , 23 , 24 , 25 , 26 ]. Few studies have been focused on HBCD concentrations in sediment in Northwest China.…”

Section: Introductionmentioning

confidence: 99%

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Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

Wang

Yuan

Yang

et al. 2018

IJERPH

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As one of the most widely used brominated flame retardants, hexabromocyclododecane (HBCD) is found widely in the environmental media. In this study, the content and spatial distribution of HBCD and risk posed by HBCD in surface sediment in the Weihe River Basin in Northwest China were investigated. The HBCD concentration ranged nd–4.04 ng/g dw with the mean was 0.45 ng/g dw. The major source of HBCD in surface sediment was local point discharge. The distribution profiles of α-, β-, γ-HBCD were 24.7–87.9%, 0–42.0%, and 0–67.1%, respectively. Specially, α-HBCD was the dominating isomer in most sample sites. This differed significantly from that in HBCD technical product, which might be attributed to the different degradation rates and inter-transformation of the three HBCD isomers. Risk quotient method was used to assess the potential risk posed by HBCD in sediment. HBCD do not pose strong risks to aquatic algae organisms in the Weihe River Basin.

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Section: Resultsmentioning

confidence: 96%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

Wang

Yuan

Yang

et al. 2018

IJERPH

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“…The α-HBCD, β-HBCD, and γ-HBCD concentrations in each sample were determined using a high-performance liquid chromatography coupled to a triple quadrupole mass spectrometer (Agilent 6470 TSQ). The mass spectrometer was operated in electrospray negative ionization mode, and the method used was based on previously published methods [25,26]. The detailed analytical methods can be found in the support information (Figure S1-S5).…”

Section: Methodsmentioning

confidence: 99%

Sorption Behavior of Hexabromocyclododecanes (HBCDs) on Weihe River Sediment

Wang

Yuan

Yang

2019

IJERPH

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The sorption of hexabromocyclododecanes (HBCDs) on sediment affects the fate and transport of HBCDs in rivers. The sorption of HBCDs on sediment from the Weihe River was investigated by performing batch equilibration experiments, and the effects of changing the pH ionic, strength, and humic acid concentration (HA) on sorption were evaluated. The obtained results indicated that fast rather than slow sorption was the dominant process. Nonlinear sorption isotherms were acquired, and the Freundlich (R 2 0.94-0.98) and Langmuir (R 2 0.95-0.99) models both described the sorption of HBCDs well. The adsorption capacity for α-HBCD, β-HBCD, and γ-HBCD were calculated using the Langmuir model, and were 443.56, 614.29 and 1146.37 mg/kg, respectively. Thermodynamic analysis shows that HBCDs sorption on sediment is a spontaneous exothermic process. HBCDs sorption was affected by the HA concentration and ionic strength. The amounts of HBCDs sorbed to the sediment decreased as the ionic strength increased, and first increased and then decreased as the HA concentration increased. Changes in pH did not clearly affect the sorption of HBCDs. Synchrotron radiation Fourier-transform infrared spectra (SR-FTIR) was used to characterize the adsorption mechanism, and the obtained result indicated that hydrophobic interactions dominated the mechanism involved in HBCDs sorption on sediment.

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Tetrabromobisphenol A and hexabromocyclododecanes in sediments from fishing ports along the coast of South China: Occurrence, distribution and ecological risk

et al. 2022

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Determination of hexabromocyclododecanes in sediments from the Haihe River in China by an optimized HPLC–MS–MS method

Cited by 11 publications

References 39 publications

Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

Concentrations, Distributions, and Risk Assessment of HBCD in Sediment in the Weihe River Basin in Northwest China

Sorption Behavior of Hexabromocyclododecanes (HBCDs) on Weihe River Sediment

Tetrabromobisphenol A and hexabromocyclododecanes in sediments from fishing ports along the coast of South China: Occurrence, distribution and ecological risk

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