Occurrence and distribution of per- and polyfluoroalkyl substances (PFASs) in the seawater and sediment of the South China sea coastal region

Wang, Qi; Tsui, Mirabelle M.P.; Ruan, Yuefei; Lin, Hui‐Ju; Zhao, Zhen; Ku, Jonas P.H.; Sun, Hongwen; Lam, Paul K.S.

doi:10.1016/j.chemosphere.2019.05.162

Cited by 100 publications

(39 citation statements)

References 60 publications

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“…PFBA and PFOA were the predominant PFAS component in seawater samples, while PFOS was the predominant PFAS component in sediment samples [30]. The detection results of PFASs in aquatic products in the present study were identical to the results of environmental samples, which indicated that shes, shell shes and crustaceans had a signi cant biological accumulation capacity of PFASs.…”

Section: Detection Results Of Various Pfas Componentssupporting

confidence: 80%

“…Guangzhou's samples were found the highest average concentration at 3.69 μg/kg. In cities with high PFASs concentrations in aquatic products, Guangzhou and Zhuhai belong to the Pearl River Delta region, and the higher detection rate of PFASs was consistent with the previous research [29,30]. Sanya was an international tourist city and it had the third highest PFASs concentration in aquatic products among all cities, which deserves attention to the risks of PFASs from local seafood to humans.…”

Section: Spatial Variation Characteristics Of Pfasssupporting

confidence: 88%

“…Sanya was an international tourist city and it had the third highest PFASs concentration in aquatic products among all cities, which deserves attention to the risks of PFASs from local seafood to humans. Previous study showed that PFBA and PFOS were the predominant PFAS components in seawater in the South China Sea [22,29,30], and the higher detection rate and pollution contribution rate of PFOS and PFBA in the aquatic products were consistent with the environmental investigation. Results from this study con rmed the bioaccumulation theory.…”

Section: Spatial Variation Characteristics Of Pfasssupporting

confidence: 74%

“…In the coastal areas of Bangladesh, the highest concentration of PFBA found in shell sh was 0.66 μg/kg [33], which was nearly one tenth of 6.07 μg/kg in this study. PFBA was often found in soil, sediment, irrigation water, tap water, seawater, crops, vegetables and fruit [12,29,30,34,35]. Considering that most shell sh had biological habits of benthic and lter-feeding [36], it was not di cult to explain why the PFBA concentrations in shell sh were higher than that in sh and crustacean samples.…”

Section: Contribution Percentage Of Individual Pfas Component In Various Categories Of Samplesmentioning

confidence: 99%

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Distribution and Exposure Risk Assessment of Perfluorinated Alkyl Substances in Aquatic Products along the Coastal Region of the South China Sea

Wang

Chen

et al. 2021

Expo Health

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ObjectiveThe purpose of this investigation was to monitor the contamination characters and spatial and temporal distributions of 23 Per uorinated alkyl substances (PFASs) in seafood along South China Coastal Regions. The exposure risks of PFOA and PFOS to human health in marine aquatic products were also evaluated. MethodsA total of 844 samples including 359 shes, 391 shell shes and 94 crustaceans were collected from Guangdong, Guangxi and Hainan provinces. The samples were extracted and puri ed using a modi ed QuEChERS procedure and analyzed by UPLC-MS / MS. The statistical analysis was performed in view of the detection of different PFAS components in variety of shes, shell shes and crustaceans, respectively. ResultsSixteen PFASs were detected in the survived samples and the total detection rates reached to 99.21 %. The highest ∑PFASs in each sample was 28.27 μg/kg, and the average and medium values of ∑PFAS were 1.83 μg/kg and 1.18 μg/kg, respectively. PFOS and PFBA have been considered as predominant PFAS components with corresponding pollution contribution rates of 29.14% and 24.71%, respectively. However, it is noted that PFNA and PFBS were primarily enriched in the oyster and mussel. During the period of this investigation (2014-2016), ∑PFAS average concentrations turned out constantly rising trend and new pollution component PFHxS detected in 2016. ∑PFAS concentrations of Guangdong, Guangxi and Hainan provinces were approximately at similar level. ConclusionThe contamination status of PFASs were getting worse in South China Coastal Regions. Safety and risk exposure assessments of PFOA and PFOS via daily diet intakes showed relatively low to local residents.

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Section: Detection Results Of Various Pfas Componentssupporting

confidence: 80%

Section: Spatial Variation Characteristics Of Pfasssupporting

confidence: 88%

Section: Spatial Variation Characteristics Of Pfasssupporting

confidence: 74%

Section: Contribution Percentage Of Individual Pfas Component In Various Categories Of Samplesmentioning

confidence: 99%

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Distribution and Exposure Risk Assessment of Perfluorinated Alkyl Substances in Aquatic Products along the Coastal Region of the South China Sea

Wang

Chen

et al. 2021

Expo Health

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“…Even though perfluorooctane sulfonic acid (PFOS) and perfluorooctanoic acid (PFOA) had been phased out in industrial production in most western countries, they are still universally detectable across populations worldwide due to their long persistence and bioaccumulation in human biomonitoring (1). Moreover, the total production of PFAS (including traditional PFOA and PFOS and their alternatives) is still increasing rapidly in Asian countries, especially in China, due to the relocation of the production lines (2,3). Even though PFAS have been linked to a variety of health outcomes, the toxicity of many PFAS remains unclear (4).…”

Section: Introductionmentioning

confidence: 99%

Exposure to Perfluoroalkyl Substances During Pregnancy and Fetal BDNF Level: A Prospective Cohort Study

Luo

Nian

et al. 2021

Front. Endocrinol.

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BackgroundHumans are widely exposed to environmental perfluoroalkyl substances (PFAS), which may affect fetal neurodevelopment. Brain-derived neurotrophic factor (BDNF) is an important factor in neurodevelopment, but its role in PFAS-induced neurotoxicity is unclear. We investigated the association between prenatal PFAS exposure and fetal BDNF level in the umbilical cord blood in a large prospective cohort.MethodsA total of 725 pregnant women who participated in the Shanghai Birth Cohort were included. 10 PFAS were measured by high-performance liquid chromatography/tandem mass spectrometry (HPLC/MS-MS) in the plasma samples of early pregnancy. The BDNF level was determined by ELISA. The concentration of total mercury (Hg) in the umbilical cord blood was tested by cold vapor atomic absorption spectrometry (AAS) and included as a main confounder, along with other covariates. Multiple linear regression was used to explore the associations between PFAS concentrations and BDNF level. Quantile-based g-computation was applied to explore the joint and independent effects of PFAS on BDNF level.ResultsThe mean BDNF level in the total population was 10797 (±4713) pg/ml. Male fetuses had a higher level than female fetuses (P<0.001). A significant positive association was observed between PFHxS and BDNF level after adjusting for potential confounders [β=1285 (95% CI: 453, 2118, P=0.003)]. No association was observed between other PFAS congeners and BDNF level. Results of the mixed exposure model showed that the joint effects of PFAS mixture were not associated with BDNF [β=447 (95% CI: -83, 978, P=0.10)], while the positive association with PFHxS exposure remained significant after controlling for other PFAS [β=592 (95% CI: 226, 958, P=0.002)]. The above associations were more prominent in male [β=773 (95% CI: 25, 1520, P= 0.04)] than female fetuses [β=105 (95% CI: -791, 1002, P= 0.82)] for the mixed effects.ConclusionsPrenatal exposure to PFHxS was associated with an increased BDNF level in the umbilical blood, especially in male fetuses.

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World Profile of Foreseeable Strategies for the Removal of Per- and Polyfluoroalkyl Substances (PFASs) from Water

Zhao

2023

Energy, Environment, and Sustainability

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Occurrence and distribution of per- and polyfluoroalkyl substances (PFASs) in the seawater and sediment of the South China sea coastal region

Cited by 100 publications

References 60 publications

Distribution and Exposure Risk Assessment of Perfluorinated Alkyl Substances in Aquatic Products along the Coastal Region of the South China Sea

Distribution and Exposure Risk Assessment of Perfluorinated Alkyl Substances in Aquatic Products along the Coastal Region of the South China Sea

Exposure to Perfluoroalkyl Substances During Pregnancy and Fetal BDNF Level: A Prospective Cohort Study

World Profile of Foreseeable Strategies for the Removal of Per- and Polyfluoroalkyl Substances (PFASs) from Water

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