Separation of Food Colorings via Liquid–Liquid Extraction: An At-Home Organic Chemistry Lab

Separation of Food Colorings via Liquid–Liquid Extraction: An At-Home Organic Chemistry Lab
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通过液液萃取分离食用色素:家庭有机化学实验室

DOI:
10.1021/acs.jchemed.0c01286
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发表时间:
2021
影响因子:
3
通讯作者:
Kozlowski, Marisa C.
Kozlowski, Marisa C.
中科院分区:
化学2区
文献类型:
--
作者:
Orzolek, Brandon J.;Kozlowski, Marisa C.

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在这里,我们描述了一个方便和安全的有机化学实验室实验,可以在家里完成。液-液萃取是一个基本的有机化学实验室实验,涉及化学结构,密度,溶解度和酸碱化学等主题。鉴于对可在家庭环境中进行的安全有机化学实验的需求不断增加,我们通过使用食品着色剂来适应传统的湿实验室液液萃取经验。学生首先通过示例问题的指导,以建立溶解度,酸碱化学和通过提取技术分离的基本理解。接下来,给他们未知的染料混合物,他们使用塑料苏打瓶与植物油,水,白色醋和碳酸氢钠进行液-液萃取。所有材料都是现成的和食品安全的,使实验适合在家里的环境,同时仍然允许学生在物理上从事基础实验室实验。
Herein, we describe an accessible and safe organic chemistry lab experiment that can be completed at home. Liquid–liquid extraction is a fundamental organic chemistry lab experiment that touches on topics such as chemical structure, density, solubility, and acid–base chemistry. Given the increased demand for safe organic chemistry experiments that can be performed in the at-home environment, we have adapted the conventional wet lab liquid–liquid extraction experience by using food colorants. Students are first guided through sample questions to establish a basic understanding of solubility, acid–base chemistry, and separation via extraction techniques. Next, they are given unknown dye mixtures which they subject to liquid–liquid extraction using a plastic soda bottle with vegetable oil, water, white vinegar, and sodium bicarbonate. All materials are readily available and food-safe, making the experiment amenable to the at-home environment while still allowing students to physically engage in a foundational lab experiment.
微量酸碱萃取:丰富多彩的介绍
DOI: --
发表时间: 1990
期刊:
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使用分液漏斗简单、丰富多彩地演示溶解度和酸/碱萃取
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