塑膠微粒對紅外光吸收響應之模擬與量測分析;Simulation and Measurement Analysis of Microplastics Response to Infrared Light Absorption

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题名:	塑膠微粒對紅外光吸收響應之模擬與量測分析;Simulation and Measurement Analysis of Microplastics Response to Infrared Light Absorption
作者:	曾培鈞;TSENG, PEI-CHUN
贡献者:	光電科學與工程學系
关键词:	塑膠微粒;紅外線
日期:	2023-08-16
上传时间:	2024-09-19 15:52:43 (UTC+8)
出版者:	國立中央大學
摘要:	本研究就塑膠微粒對紅外線之吸收響應進行模擬與量測，希望能找出塑膠微粒在特定波段下，對紅外線穿透光強之影響。期望本研究能對可檢測塑膠微粒之傳感器的設計帶來幫助，並期待未來可以設計出該傳感器。　　量測時，首先架設紅外光源、準直透鏡、聚焦透鏡，將待測液體置於比色槽內並放置於載台上，使光線通過樣品並聚焦於偵測器上後，利用電腦中的儀控程式紀錄偵測器接收到的吸收電壓，再分析其結果。同時，使用光學模擬軟體ASAP重建出以上光路，將各波長下，各個材質的參數帶入計算，模擬出塑膠微粒在特定波長範圍下之表現並分析其結果，再將光源與偵測器在不同波長下之表現帶入模擬結果中，與實驗進行比對。最後用吸收率公式進行理論值計算，使模擬出的數值能與理論值相互驗證。　　從模擬的結果中，分析了不同波長之下，塑膠微粒對穿透光強之表現，可以發現塑膠微粒越多時，穿透之光強度值會越低，且呈現一種線性關係，而當微粒數量不變時，不同波長間穿透的光通量結果與塑膠微粒在該波長下之穿透率、吸收係數等參數的關聯較小，無法從結果中分析出塑膠微粒對不同波長紅外線的吸收響應差異，表示此實驗架設之下，塑膠微粒在不同波長間的穿透率大小對整體架構的影響不大。　　實驗結果顯示，當塑膠微粒的數量高達1000個時，對穿透光強的改變量約為11 %，而若是塑膠微粒浸泡於水中時，對穿透光的改變量則會增加至23 %，而使用ASAP進行模擬時，同樣的架構下，對最後的穿透光的改變量則是26 %左右，與實驗結果非常相近。　　本項實驗找出了在此架設下，塑膠微粒對紅外線之吸收響應，期望本研究所得之數據能應用在建立塑膠微粒之傳感器上，透過對樣品的分析，找出塑膠微粒的成分、濃度。 ;This study focuses on simulating and measuring the absorption response of microplastics to infrared radiation within specific wavelength ranges. During the measurement process, we set up an infrared light source, a collimating lens, and a focusing lens first. Then put the cuvette containing the liquid to be tested on the platform. After the light passes through the sample and focuses onto the detector, the voltage is recorded and analyzed by using a computer instrument control program. Simultaneously, an optical simulation software, ASAP, is used to simulate the optical configuration. By inputting optical parameters of materials at various wavelengths into ASAP, the influence of microplastics on the transmission intensity of infrared light is simulated and compared with the experimental results. In addition, Beer-Lambert law is utilized to calculate the theoretical absorption values, aiming to identify the differences between the simulated and theoretical values. Based on the simulation results, it is observed that as the quantity of microplastics increases, the intensity of transmitted light decreases, and exhibits a linear relationship. When the number of particles remains constant, the radiant flux at different wavelengths show low correlation with the transmission and absorption coefficients of microplastics. This means that the spectral absorption of microplastics cannot be discerned with the current optical configuration. The experimental results demonstrate that when the number of microplastics is 1000, the change in transmitted light intensity is approximately 11%. When microplastics are immersed in water, the change in transmitted light intensity increases to 23%. The result from ASAP simulation shows the change in transmitted light intensity around 26%, which closely aligns with the experimental result. This study has identified the absorption response of microplastics to infrared radiation under a specific optical configuration. It is hoped that the data from this research can be applied to the development of sensors for microplastics detection.
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