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

doi:10.1038/srep12776

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

Research output: Contribution to journal › Article › peer-review

63 Citations (Scopus)

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.

Original language	English
Article number	12776
Journal	Scientific Reports
Volume	5
DOIs	https://doi.org/10.1038/srep12776
Publication status	Published - 4 Aug 2015
Externally published	Yes

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10.1038/srep12776

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title = "Chlorophyll catalyse the photo-transformation of carcinogenic benzo[a]pyrene in water",

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.",

author = "Lijuan Luo and Xueying Lai and Baowei Chen and Li Lin and Ling Fang and Tam, \{Nora F.Y.\} and Tiangang Luan",

note = "Funding Information: This research was financially supported by the National Natural Science Foundation of China (NSFC, No. 21277177, 41473092), Foundation for High-level Talents in Higher Education of Guangdong Province and Administration of ocean and Fisheries of Guangdong Province, China.",

year = "2015",

month = aug,

day = "4",

doi = "10.1038/srep12776",

language = "English",

volume = "5",

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TY - JOUR

T1 - Chlorophyll catalyse the photo-transformation of carcinogenic benzo[a]pyrene in water

AU - Luo, Lijuan

AU - Lai, Xueying

AU - Chen, Baowei

AU - Lin, Li

AU - Fang, Ling

AU - Tam, Nora F.Y.

AU - Luan, Tiangang

N1 - Funding Information: This research was financially supported by the National Natural Science Foundation of China (NSFC, No. 21277177, 41473092), Foundation for High-level Talents in Higher Education of Guangdong Province and Administration of ocean and Fisheries of Guangdong Province, China.

PY - 2015/8/4

Y1 - 2015/8/4

N2 - 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.

AB - 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.

UR - https://www.scopus.com/pages/publications/84938775536

U2 - 10.1038/srep12776

DO - 10.1038/srep12776

M3 - Article

C2 - 26239357

AN - SCOPUS:84938775536

VL - 5

JO - Scientific Reports

JF - Scientific Reports

M1 - 12776

ER -

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

Abstract

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