High contamination, bioaccumulation and risk assessment of perfluoroalkyl substances in multiple environmental media at the Baiyangdian Lake

Due to wide use of perfluoroalkyl substances (PFASs) (e.g., in metal-plating, in fire-fighting foam, lubricants) and their resistance to degradation, they occur widely in the environment. The aim of this study was to estimate the environmental risk resulting from the presence of PFASs in the Gulf of Gdansk. Therefore, 17 PFASs concentrations were determined using ultra performance liquid chromatography with tandem mass spectrometry detection (UPLC-MS/MS). Additionally, sediment ecotoxicity was investigated. The results of the chemical analysis were used to asses environmental risk of PFASs. In samples collected around discharge collectors from a wastewater treatment plant and the Vistula mouth, Σ17PFASs values were 0.00403 ÷ 40.6 and 0.509 ÷ 614 ng/g d.w., respectively. In samples collected around discharge collectors, PFHxA, PFPeA, PFHpA, and PFOA were dominating, while at the Vistula River mouth, PFHxS, PFDS, and PFBS were prevalent. For most sediments, no toxic effect was observed in the toxicity tests with Heterocypris inconguens and Aliivibrio ficsheri. There was no observed correlation between the PFASs level and their ecotoxicity. Generally, the results of environmental risk assessment indicate that the PFASs would not generate high impact on the aquatic life (five water samples have shown medium risk related to PFBS and PFDoA).

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Pollution Characteristics of Microplastics in Soils in Southeastern Suburbs of Baoding City, China

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17030845 ◽

2020 ◽

Vol 17 (3) ◽

pp. 845 ◽

Cited By ~ 8

Author(s):

Chuan Du ◽

Handong Liang ◽

Zhanping Li ◽

Jie Gong

Keyword(s):

Risk Assessment ◽

Secondary Ion Mass Spectrometry ◽

Ferrous Metal ◽

Reference Method ◽

Negative Ion ◽

Risk Level ◽

Environmental Media ◽

Wide Range ◽

Water Ecosystems ◽

The Impact

Microplastics (MPs) are emerging pollutants that exist in different environmental media. Because of their wide range and large potential environmental hazards, they have attracted widespread attention in recent years. At present, the research on MP is mostly concentrated on the water ecosystems, and the impact on soil ecosystems is less studied. In this study, 12 typical soil samples from southeastern suburbs of Baoding city were investigated and characterized by time-of-flight secondary ion mass spectrometry (TOF-SIMS) combined with mass high resolution mode and positive and negative ion imaging mode. Four types of MPs, poly (propylene) (PP), poly (vinyl chloride) (PVC), poly (ethylene terephthalate) (PET), and poly (amide 6) (PA6), were quickly identified, of which PET and PA6 accounted for the largest proportion of both up to 30.2%; the particle size of the obtained MPs ranged from 0 to 35 μm, of which the proportion of <10 μm MPs was more than 26.3%, while that of 20–25 μm and 25–35 μm MPs was relatively small (17.83% and 9.3%, respectively). Risk assessment results of the MP in the soil showed that the risk level of MPs in the non-ferrous metal industrial parks and in concentrated with small workshops areas is relatively high, and attention should be paid to such areas. In addition, the study provides a reference method for the investigation and risk assessment of MPs in terrestrial soils, coastal beaches, and sediments.

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Health and ecotoxicological risk assessment for human and aquatic organism exposure to polycyclic aromatic hydrocarbons in the Baiyangdian Lake

Environmental Science and Pollution Research ◽

10.1007/s11356-020-10480-1 ◽

2020 ◽

Vol 28 (1) ◽

pp. 574-586

Author(s):

Yizhen Wang ◽

Mingzhe Liu ◽

Yi Dai ◽

Yang Luo ◽

Shilu Zhang

Keyword(s):

Risk Assessment ◽

Polycyclic Aromatic Hydrocarbons ◽

Aromatic Hydrocarbons ◽

Aquatic Organism ◽

Baiyangdian Lake ◽

Ecotoxicological Risk Assessment ◽

Ecotoxicological Risk ◽

Polycyclic Aromatic

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Environmental Sampling and Exposure Assessment

10.1093/med/9780190688622.003.0009 ◽

2017 ◽

Author(s):

Morton Lippmann ◽

Richard B. Schlesinger

Keyword(s):

Risk Assessment ◽

Exposure Assessment ◽

Occupational Exposures ◽

Environmental Sampling ◽

Exposure Limits ◽

Environmental Media ◽

Biomarkers Of Exposure ◽

General Populations

This chapter describes the characterization of occupational exposures of workers to chemicals at their job sites, and exposures of general populations to chemicals in the environmental for individuals and population groups. It also discusses: approaches to risk assessment; the determination of whether exposures exceed established exposure limits or standards; and the methodologies used to determine and/or model the concentrations of chemicals in environmental media that are used to determine the nature and extent of exposures, and of biomarkers of exposure, to individuals and populations of humans and other receptors.

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