Acridine Red Spectrophotometric Determination of Trace IO3- Based on Formation of Associated Particles

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Abstract:

Under the conditions of HCl-KI, acridine red (AR) has a max absorption peak at 540 nm, the max absorption peak of acridine orange (AO) at 480 nm. When there is IO3-, it reacts with excessive I- to form I3-. The AR and I3- all combine to form an association particle that caused the absorption decreasing. I03- concentration in the range of 5-90×10-7 mol/L can be determined by the pectrophotometry.

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Advanced Materials Research (Volumes 718-720)

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548-551

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July 2013

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© 2013 Trans Tech Publications Ltd. All Rights Reserved

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