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How Does Your Laundry Glow?
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Abstract
This Classroom Activity examines the effect of pH on the fluorescence properties of optical brighteners present in liquid laundry detergent. Students conduct acid titrations in the presence and absence of buffer to determine the pH of the fluorescence color transition. This Activity can be used to explore the principles of acid/base titrations, the action of buffers, and the photophysics of pH-sensitive fluorescent probes.
Keywords (Audience):
Elementary / Middle School ScienceKeywords (Feature):
JCE Classroom ActivityKeywords (Pedagogy):
Hands-On Learning / ManipulativesKeywords (Subject):
Acids / BasesCiting Articles
Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.
This article has been cited by 1 ACS Journal articles (1 most recent appear below).
Classroom Activity Connections: Lessons from Fluorescence
Aoife MacCormac, Emma O’Brien and Richard O’KennedyJournal of Chemical Education2010 87 (7), 685-686Classroom Activity Connections: Lessons from Fluorescence
Aoife MacCormac, Emma O’Brien and Richard O’KennedyJournal of Chemical Education2010 87 (7), 685-686This Classroom Activity Connections paper describes an extension to the JCE Classroom Activity #68 “Turning on the Light”. A number of additional common items that display fluorescence under UV light are described, including fruits, vegetables, and ...
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History
- Received: August 03, 2009
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