Determining the EDTA Content in a Consumer Shower Cleaner. An Introductory Chemistry Laboratory Experiment
Determining the EDTA Content in a Consumer Shower Cleaner. An Introductory Chemistry Laboratory Experiment
复制标题
测定消费者淋浴清洁剂中的 EDTA 含量。
DOI：
10.1021/ed077p1334
复制
发表时间：
2000
影响因子：
7.4
通讯作者：
W. Weigand
中科院分区：
文献类型：
--
作者：
W. Weigand
在阿尔图纳学院，化学 11 为学生提供作为大学化学原理课程化学 12 的预备课程。相关实验室是学生学习化学的动力源泉。使实验室发挥作用的一种方法是分析消费品的化学成分。几种新的淋浴清洁产品已经推出，宣传淋浴不再需要清洁。该清洁剂使用表面活性剂、酒精和螯合剂的组合来发挥作用。流行的淋浴清洁剂的网站将 EDTA（乙二胺四乙酸根离子）列为螯合剂。经典的 EDTA/钙络合滴定法可用于测定清洁剂的 EDTA 含量。本文介绍了测定淋浴清洁产品中 EDTA 含量的实验。
At Altoona College, Chemistry 11 is offered to students as a preparatory course for the University's Chemical Principles course, Chem 12. A relevant laboratory is a source of motivation for the students to learn the chemistry. One way of making the laboratory relevant is to analyze the chemical components of consumer products. Several new shower-cleaning products have been introduced, which advertise that cleaning the shower is no longer necessary. The cleaners work using a combination of surfactants, alcohols, and a chelating agent. The Web site of a popular shower cleaner lists EDTA (ethylenediamine tetraacetate ion) as the chelating agent. The classic EDTA/calcium complexometric titration can be used to determine the EDTA content of the cleaner. This article describes the experiment to determine the EDTA content in a shower-cleaning product.