Photoconversion of p-Chlorphenol in Photo-Fe3+-oxalic Acid System in Ice

Abstract

Abstract: This work investigated the photoconversion of para-chlorphenol (4-CP) in simulated sunlight - Fe3+ - oxalic acid system in ice using self-made low temperature device. The results showed that in the presence of Fe3+ and oxalic acid, the photoconversion of 4-CP was accelerated in ice. The initial concentration of Fe3+ and oxalic acid, the ratio of the initial concentration of Fe3+ and oxalic acid, and the initial pH value had significant influence on the photoconversion of 4-CP. The photoconversion rate of 4-CP reached 39.1% after irradiation for 7.5 h when the initial pH value was 6.5, the ratio of the initial concentration of Fe3+ and oxalic acid was 1/5, and the initial concentration of oxalic acid was 0.8mmol/L. During irradiation, the conversion rate of TOC was lower than that of 4-CP. The photoconversion of 4-CP obeyed the first order kinetics equation. The photoproduct of 4-CP were enriched through direct extraction and derivatization respectively, and then analyzed by GC-MS. Accroding to the outcome, the photoconversion mechanism was deduced in the simulated sunlight - Fe3+ - oxalic acid system in ice.

Key words: para-chlorphenol, photoconvertion, ice, oxalic acid, Fe3+

CLC Number:

X132

TrendMD:

XUE Hong-Hai, PENG Fei, ZHAO Xu-Hui, KANG Chun-Li*, LI Lin-Lin, LI Zhe, LIU Han-Fei. Photoconversion of p-Chlorphenol in Photo-Fe³⁺-oxalic Acid System in Ice[J]. Chem. J. Chinese Universities, 2011, 32(5): 1077.

References

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Photoconversion of p-Chlorphenol in Photo-Fe³⁺-oxalic Acid System in Ice

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