การประเมินค่าและวิเคราะห์มลสารไมโครพลาสติกในแหล่งผลิตน้ำประปาจากแม่น้ำปิง จังหวัดเชียงใหม่

Abstract

Microplastics contamination in surface water resources are the important environmental problems which express concern globally. Due to the huge impacts to human and environment for example, microplastics exposure can cause toxicity through oxidative stress, inflammatory lesions, and increased uptake or translocation. In Thailand, there is a considerable lack of knowledge on the basic information including of the amount and type of contaminated microplastics. The present study emphasizes the contaminated microplastics in water supply resources, Pa Tan, Pa Dad and U-Mong water supply station in Chiang Mai. The results present the average amount of microplastics 3,880±1,150 3,346±664 and 3,810±1,355 pieces/m3, respectively with the type of Polyester, Polyurethane, Nylon, Polyethylene, Polyethylene terephthalate and Polypropylene observed by the microscope and the Fourier-transform infrared spectroscopy (FT-IR). Meanwhile, there were no relationship at the 0.05 level of probability between the amount of microplastics and the physical and chemical parameters, Suspended Solid, Dissolved Oxygen, Biochemical Oxygen Demand, Total Nitrogen and Total Phosphorus. In the present study, it is the first scientific reports which indicated the microplastics contamination in the water supply resources in Chiang Mai. The environmental outcomes could be the current knowledge with the intention of better focus future research in this area and fill knowledge gaps.