Affiliation:
1. Guangxi Normal University
Abstract
O3reacted with KI-H3BO3absorption solution to produce I2which can combine with the excess I- to form I3-. In pH 4.0 HAc-NaAc buffer solution, I3- reacted with rhodamine 6G (Rh6G) to form Rh6G-I3association particles, which exhibited a great decreasing at 525 nm. Under the chosen conditions, the decreased intensity ΔA was linear to I2concentration in the range of 0.5×10-6-33×10-6mol/L. Thus, a highly sensitive and selective spectrophotometric method was proposed to detect O3in the air, since the concentration of O3was equal to that of I2in this reacted system.
Publisher
Trans Tech Publications, Ltd.
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