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A Simple and Sensitive Fluorescence Quenching Method for the Determination of Trace IO3- Using Acridine Red

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Abstract:

In the medium of HCl containing KI, acridine red (AR) exhibited a fluorescence peak at 550 nm, and acridine ornage (AO) has a fluorescence peak at 520 nm. Upon addition of IO3-, it reacts with excessive I- to form I3-. The AR and I3- combine to form an association particle that caused fluorescence quenching at 550 nm. IO3- concentration in the range of 5.0-120×10-7 mol/L can be determined by AR fluorescence quenching method.

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Periodical:

Advanced Materials Research (Volume 716)

Pages:

58-61

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.716.58

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Online since:

July 2013

Authors:

Gui Qing Wen, Ting Sheng Li

Keywords:

Acridine Red, Associated Particle, Fluorescence Quenching, IO3-

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