自製簡易光度計與其分析應用

Home-Made Photometer and Its Analytical Applications

蔡惠燕(H. Y. Tsai) ； 古涵如(H. R. Ku)

《化學》 69卷4期 (2011/12) Pp. 389-396

https://doi.org/10.6623/chem.2011036

摘要

本研究依據光學儀器的基本原理，找便宜可替代的適當電子材料組裝簡易光度計，應用於硫酸銅及免洗筷二氧化硫殘留量的測定，所得結果與商業分光光度計測量結果比較並沒有顯著差異。自製光度計簡單、便宜、易於攜帶、安全性高，可推廣到大二分析化學實驗，與分析課程中光譜儀器及應用相關單元結合，可增加學生對儀器設計原理與應用的了解。

關鍵字

低成本光度計 ； 二氧化硫

並列摘要

Learning to operate a photometer is easy and the excellent reproducibility and accuracy of these devices has led to their wide application in the quantitative analysis of chemicals. This study assembled a simple photometer for analytical applications. Cupric sulfate solution was used to compare the linearity, linear range, reproducibility, and accuracy of the home-made photometer with the results from a commercial spectrophotometer. The results showed no significant difference. Quantitative analysis of residual sulfur dioxide in chopsticks was also performed. The home-made photometer is simple, safe, inexpensive to produce, and portable. The proposed device could be used for experimental course of analytical Chemistry to help students understand the principles involved in instruments as well as their applications.

並列關鍵字

Low cost photometer ； Sulfur dioxide