Premium
Photodegradation kinetics and byproducts identification of the Aflatoxin B 1 in aqueous medium by ultra‐performance liquid chromatography–quadrupole time‐of‐flight mass spectrometry
Author(s) -
Liu Ruijie,
Jin Qingzhe,
Tao Guanjun,
Shan Liang,
Huang Jianhua,
Liu Yuanfa,
Wang Xingguo,
Mao Wenyue,
Wang Shanshan
Publication year - 2010
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.1741
Subject(s) - chemistry , chromatography , mass spectrometry , photodegradation , quadrupole time of flight , kinetics , aqueous solution , quadrupole , aqueous medium , tandem mass spectrometry , organic chemistry , catalysis , photocatalysis , quantum mechanics , atomic physics , physics
A photodegradation study of Aflatoxin B 1 (AFB 1 ) in water solution was performed under UV irradiation at different AFB 1 initial concentrations and UV irradiation intensities. The effect of UV intensity on the AFB 1 photodegradation ratio is dominative, when compared with AFB 1 initial concentration. The photodegradation of AFB 1 was proved to follow first‐order reaction kinetics ( R 2 ≥ 0.99). Three photodegradation products, i.e. P 1 (C 17 H 14 O 7 ), P 2 (C 16 H 14 O 6 ) and P 3 (C 16 H 12 O 7 ), were identified on the basis of low mass error and high matching property by ultra‐performance liquid chromatography–quadrupole time‐of‐flight mass spectrometry (UPLC–Q‐TOF MS), and the degradation pathway was proposed. This study first reports the appearance of these photodegradation products and the proposed degradation pathway in aqueous media. Copyright © 2010 John Wiley & Sons, Ltd.