Open Journal of Physical Chemistry

Volume 6, Issue 4 (November 2016)

ISSN Print: 2162-1969   ISSN Online: 2162-1977

Google-based Impact Factor: 0.33  Citations  

Photochemical Reactions of Microcystin-LR Following Irradiation with UV Light

HTML  XML Download Download as PDF (Size: 852KB)  PP. 79-85  
DOI: 10.4236/ojpc.2016.64008    1,668 Downloads   2,635 Views  


Photochemical reactions of microcystin-LR, a toxic compound produced by some blue green algae, were investigated. Ultraviolet absorption of microcystin-LR was assessed. Time-dependent density functional theory (TDDFT) calculations indicated that absorption peak at 238 nm was mainly due to excitation of electrons from the linear chain structure Adda of microcystin-LR. Irradiation of microcystin-LR with UV light resulted in the reduction of the 238 nm absorption peak and the appearance of a new peak at 300 nm. Density functional theory (DFT) and TDDFT calculations with a model molecule suggested that this 300 nm peak was due to tricyclo-Adda microcystin-LR, an intermediate in photochemical reactions of microcystin-LR. Analysis of the rate of this photochemical reaction showed that it was a first order reaction.

Share and Cite:

Mizukami, Y. (2016) Photochemical Reactions of Microcystin-LR Following Irradiation with UV Light. Open Journal of Physical Chemistry, 6, 79-85. doi: 10.4236/ojpc.2016.64008.

Cited by

No relevant information.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.