Assessing the Estuary Ecological Risk and Potential Human Health Risk for Microplastics in Taiwan
學生姓名:
陳姿蓉
指導教授:
凌明沛
學期:
111下
摘 要:
Microplastics (MPs) are ubiquitous in the oceans. Due to the small size and large surface area of MPs, they were easily ingested by marine organisms, and may cause health hazards to the human through ingestion of aquatic products contaminated by MPs. Oysters were
considered to be a good bioindicator of MPs pollution, which could reflect the status of environmental pollution. Therefore, this study investigated the abundance of MPs in surface water and oysters, then evaluated the ecological risk of MPs in surface water and the potential
human health risks of exposure to MPs through consumption of aquatic products. In this study, the samples of surface water and oyster were collected from 6 estuaries and 1 downstream of rivers in Taiwan. Then using stereomicroscope and Fourier-transform infrared spectrometer (FTIR) to analyze the morphological characteristics and the abundance of MPs. Finally, the ecological and human potential health risks were evaluated through the risk quotient (RQ) and the exceedance risk (ER), respectively. The results showed that the abundance of MPs in surface water and oysters were ranges from 0.025－4.701 items/m3 and 0.015－2.374 items/g. The RQ result was far less than 1, indicated negligible risk for the ecosystem. For human health risks, MPs induced a decrease in adenosine triphosphate (ATP), triglycerides (TG) level, and increased in superoxide dismutase (SOD) activity, which indicated the impaired energy metabolism, disturbance of lipid metabolism, and imbalance of antioxidant defense system. The consumer only (CO) group had the highest risk of exposure by the consumption of shellfish. The probability of 10% that the ATP and TG level in the liver were be reduced to at least 27.097 μmol/g protein and 0.235 mmol/g protein, while the SOD activity increased to at least 236.46 U/mg protein. Based on the results of this study, the possible pollution sources of MPs can be further controlled to reduce MPs in the environment, thereby reducing the health risks of aquatic organisms and people who eat aquatic products exposed to MPs.
considered to be a good bioindicator of MPs pollution, which could reflect the status of environmental pollution. Therefore, this study investigated the abundance of MPs in surface water and oysters, then evaluated the ecological risk of MPs in surface water and the potential
human health risks of exposure to MPs through consumption of aquatic products. In this study, the samples of surface water and oyster were collected from 6 estuaries and 1 downstream of rivers in Taiwan. Then using stereomicroscope and Fourier-transform infrared spectrometer (FTIR) to analyze the morphological characteristics and the abundance of MPs. Finally, the ecological and human potential health risks were evaluated through the risk quotient (RQ) and the exceedance risk (ER), respectively. The results showed that the abundance of MPs in surface water and oysters were ranges from 0.025－4.701 items/m3 and 0.015－2.374 items/g. The RQ result was far less than 1, indicated negligible risk for the ecosystem. For human health risks, MPs induced a decrease in adenosine triphosphate (ATP), triglycerides (TG) level, and increased in superoxide dismutase (SOD) activity, which indicated the impaired energy metabolism, disturbance of lipid metabolism, and imbalance of antioxidant defense system. The consumer only (CO) group had the highest risk of exposure by the consumption of shellfish. The probability of 10% that the ATP and TG level in the liver were be reduced to at least 27.097 μmol/g protein and 0.235 mmol/g protein, while the SOD activity increased to at least 236.46 U/mg protein. Based on the results of this study, the possible pollution sources of MPs can be further controlled to reduce MPs in the environment, thereby reducing the health risks of aquatic organisms and people who eat aquatic products exposed to MPs.
陳姿蓉20230503_專題討論摘要.pdf