2017-03-092024-05-15https://scholars.lib.ntu.edu.tw/handle/123456789/664072摘要：塑膠碎片在全球海洋、土壤、底泥及地表水中，日益增多，其中奈米與微米塑膠顆粒，因為會經由食物鏈影響生態環境而特別受到重視。目前的較多研究聚焦於海洋系統的奈米與微米塑膠顆粒研究，但最近的研究顯示，海洋生物所含之塑膠顆粒有90%以上來自於水陸之清水環境。本研究將針對奈米與微米塑膠顆粒在水陸環境中之宿命進行探討，並對生物體之可能影響進行評估，研究將以水與底泥樣品中之奈米與微米塑膠顆粒進行偵測、特性探討及量化研究，評估其在河川集水區與土壤中傳輸機制與宿命，以瞭解其可能之環境衛生風險。水與底泥樣品取自於北臺灣淡水河系河川與湖泊，利用物化試驗與FTIR分析樣品中的塑膠含量，研究成果將有助於對奈米與微米塑膠顆粒釋於環境之序列現象有所澄清。<br> Abstract: Plastic debris has been detected in the oceans, in soils, sediments and surface waters worldwide and emissions are expected to increase in the coming years. Here, so-called nano- and microplastics, are of special concern because they can be ingested throughout the food web more readily than larger particles. To date the majority of research into nano- and microplastic “pollution” has focused on marine systems; however, recent studies have indicated that up to 90% of the plastic in the seas originates from terrestrial and freshwater sources. In the present proposal, fate and occurrence of nano- and microplastics in the aquatic and terrestrial environment, and possible effects on organisms will be critically evaluated. The main objectives of this study are to detection, characterization and quantification of nano- and microplastics in water and sediment samples, assess the transport mechanisms and fate of microplastics in river catchment and soil columns, investigating the microplastic persistence in waters, sediments and soils, develop a picture of the environmental distribution of nano- and microplastics, and assess potential environmental health risks of nano- and microplastics. Water and sediment samples are collected from a different rivers and lakes in the northern Taiwan and the microplastics content will be analyzed using a variety of physico-chemical tests and FTIR spectroscopy. Different freshwater bodies are sampled: Tamsui River, Dahan River, Keelung River, and Xindian River. Water samples were obtained by in situ and ex situ methods. Finally the evidence of nano- and microplastics contamination in freshwater and sediments of Northern Taiwan will be quantified, the microplastics in studied region will be characterized in details, and potential effects of nano- and microplastic will be determined. The results of this study would be beneficial to identify the key challenges in the research of the environmental consequences of nano- and microplastic released into the environment.奈米與微米塑膠水體環境清水水源臺灣Nano- and microplasticsAquatic systemFreshwater sourcesTaiwan