对“验证提取海带中的碘元素”实验的改进与创新

Experiment Improvement of Extraction and Verification of Iodine in Kelp

将演示实验“验证提取海带中的碘元素”改为分组实验，采用灰化法用蒸馏水常温浸泡海带灰，使用废旧饮料瓶自制加压过滤器，利用棉签、点滴板（或瓶盖）、废旧眼药水瓶进行微型实验，并用反萃法对所得碘的有机溶液进行回收处理，所需仪器和药品主要来自于生活，在中学化学实验的家庭化、微型化与绿色化方面进行了有益的尝试。

This paper improved the experiment of extraction and verification of iodine in kelp. soaking kelp ash in distilled water at normal temperature, making pressure filtration by plastic bottle, using cotton bud, spot plate and waste eyedrop bottle to do microscale experiment, and recycling the obtained organic solution of iodine by means of reverse extraction, it realized chemistry experiment of homely, green and mieroscale.