Scientific reports 2015-01-01

Chlorophyll catalyse the photo-transformation of carcinogenic benzo[a]pyrene in water.

Lijuan Luo, Xueying Lai, Baowei Chen, Li Lin, Ling Fang, Nora F Y Tam, Tiangang Luan

Index: Sci. Rep. 5 , 12776, (2015)

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Abstract

Algal blooms cause great damage to water quality and aquaculture. However, this study showed that dead algal cells and chlorophyll could accelerate the photo-transformation of benzo[a]pyrene (BaP), a ubiquitous and persistent pollutant with potently mutagenic and carcinogenic toxicities, under visible light irradiation. Chlorophyll was found to be the major active substance in dead algal cells, and generated a high level of singlet oxygen to catalyse the photo-transformation of BaP. According to various BaP metabolites formed, the degradation mechanism was proposed as that chlorophyll in dead algal cells photo-oxidized BaP to quinones via photocatalytic generation of singlet oxygen. The results provided a good insight into the role of chlorophyll in the photo-transformation of organic contaminants and could be a possible remediation strategy of organic pollutants in natural environment.

Related Compounds

  • Acetone
  • Methanol
  • benzene
  • Phenol
  • CHLOROPHYLL...
  • Furfuryl alcohol
  • Rhein

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