【化學教育專欄】跨領域學習之實作與探究：以製作簡易光度計檢測機車排放二氧化氮為例

Inquiry and Practice of Interdisciplinary Learning: Detect the Nitrogen Dioxide Emitted by Motorcycles Using the Home-made Photometer

楊雅淋(Ya-Lin Yang) ； 盧羿听(Yi-Ting Lu) ； 黃暐筑(Wei-Zhu Huang) ； 張綾祐(Ling-You Zhang) ； 朱庭儀(Ting-Yi Zhu) ； 賴品光(Pin-Guang Lai) ； 張士昱(Shih-Yu Chang) ； 蔡惠燕(Hwei-Yan Tsai)

《化學》 80卷5期 (2022/12) Pp. 517-525

https://doi.org/10.6623/chem.202212_80(5).005

摘要

本文結合跨領域學習知識與技能，利用生活科技所教授的簡易半導體電子零件及多媒體繪圖與3D列印製作簡易光度計，開發可在戶外測量氣體中含有二氧化氮的套組，提供高中生自我探索與實作之工具組。利用對胺基苯磺酸及N-（1-萘基）乙二胺二鹽酸鹽在酸性條件下和亞硝酸根進行Griess反應。本研究中亦改良Griess試劑，將磷酸換成草酸，將試劑改良成粉狀，提高攜帶便利性與安全性；搭配自組光度計，利用綠色LED燈（波長520-530nm）量測其吸光之變化值測定亞硝酸根含量，可實現戶外隨時隨地測量，開拓高中生探究實作的方向並關心永續環境議題。

關鍵字

改良格理斯試劑 ； 自組光度計 ； 亞硝酸定量 ； 空氣汙染 ； 基礎教育

並列摘要

In this study, a simple photometer was made and used to measure nitrogen dioxide for outdoor applications. The knowledge and skills taught in the Living Technology and Arts and Life classes, simple semiconductor electronic components, multimedia drawing, and 3D printing were used to build a simple photometer. The Griess reaction, p-aminobenzenesulfonic acid and N-(1-naphthyl)ethylenediamine dihydrochloride reacting with nitrite under acidic conditions, was used to detect NO_2 in the air emitted by motorcycles. The Griess reagent was also modified which phosphoric acid was replaced with oxalic acid, and the modified reagent was turned into a mixed powder, providing greater safety and portability. The homemade photometer, with a green LED light (wavelength 520-530 nm), can be used at anytime and anywhere outdoors. This study provides a tool and guidance for high school students to explore and practice their concern for sustainable environmental issues.

並列關鍵字

Modified Griess reagent ； Home-made photometer ； Nitrogen dioxide ； Air pollution ； Basic education