| Summary: | 碩士 === 中原大學 === 化學研究所 === 89 ===
Abstract
Infrared optical sensor provides fast and non-destructive method in detection of organic compounds in aqueous solutions. Three modes are frequently used in the infrared sensing devices including the attenuated total reflectance (ATR), transmittance, and reflection-absorption. However, each of them is restrictive for example, ATR is restricted by depth of penetration (dp) and expensive internal reflection elements are required in this method , TA is restricted by materials of film and RA is restricted by the loss of energy. In this work, we suggested two new methods in detection of chloroanilines in aqueous solution. One of them is combined T and SPME, another is combined RA and SPME. Then we compared them with ATR systematically. Because infrared sensing elements are typically coated with hydrophobic film to serve as concentration medium, polyacrylonitril-co-butadiene (PAB) was used in this work for attracting chloroanilines in aqueous solutions. To conduct a fair comparison, analytical parameters, such as the linear range, sensitivity, detection limits, signal-to-noise level, film thickness, and speed of detection, were used in this study. After applied these three modes in detection of seven chloroanilines, we found that each detection mode provides its own advantages in detection.
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