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Photochemical reaction of nitro-polycyclic aromatic hydrocarbons: effect by solvent and structure

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Abstract

Photochemical degradation of 1-nitropyrene, 2-nitrofluorene, 2,7-dinitrofluorene, 6-nitrochrysene, 3-nitrofluoranthene, 5-nitroacenaphthene, and 9-nitroanthracene was examined in CHCl3, CH2Cl2, DMF, DMF/H2O (80/20), CH3CN, or CH3CN/H2O (80/20). The degradation mostly follows the first order kinetics; but a few follow second order kinetics or undergo self-catalysis. The photodegradation rates follow the order: CHCl3 > CH2Cl2 > DMF > DMF/H2O > CH3CN > CH3CN/H2O. DMF is an exceptional solvent because three of the seven compounds undergo self-catalytic reaction. 9-Nitroanthracene, which has a perpendicular nitro group, is the fastest, while the more compact 1-nitropyrene and 3-nitrofluoranthene are the slowest degrading compounds.

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Acknowledgments

This research was in part supported by the National Institutes of Health (NIH-SCORE S06 GM08047). We thank NIH-RCMI for Analytical Chemistry Facility established at JSU. Gernerique Stewart would like to thank the US Department of Education Title III for funding (Grant P031B040101).

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Correspondence to Hongtao Yu.

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Stewart, G., Smith, K., Chornes, A. et al. Photochemical reaction of nitro-polycyclic aromatic hydrocarbons: effect by solvent and structure. Environ Chem Lett 8, 301–306 (2010). https://doi.org/10.1007/s10311-009-0221-2

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  • DOI: https://doi.org/10.1007/s10311-009-0221-2

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