Abstract：This study examined the influence of NO3-, NO2--, and NH4+ on the photodegradation of clofibric acid under the simulated sunlight in water. Their influence mechanisms were inspected by calculating light-screening factor and quenching experiments. The recombinational influence of inorganic nitrogen on the photodegradation of clofibric acid under various simulated pE values was also explored. Results showed that photodegradation of clofibric acid with the presence of NO3-, NO2--, and NH4+ followed the pseudo-first-order kinetics. Both NO3- and NO2-- inhibited the photodegradation of clofibric acid, while NH4+ had no influence on clofibric acid removal. NO3-showed much stronger inhibitory effect than that of NO2--. Photodegradation conversion of clofibric acid changed with altering pE value. The co-existence of NH4+ and NO2--, or NO3- and NO2-- in water displayed antagonism to influence on the photodegradation of clofibric acid. However, antagonism between NO3- and NO2-- was stronger than that between NH4+ and NO2--.
孔青青, 张祥丹, 李富华, 吕文英, 刘国光, 林晓璇, 陈平. 不同形态氮对水环境中氯贝酸光降解的影响[J]. 中国环境科学, 2017, 37(2): 584-591.
KONG Qing-qing, ZHANG Xiang-dan, LI Fu-hua, LV Wen-ying, LIU Guo-guang, LIN Xiao-xuan, CHEN Ping. Effect of different forms of nitrogen on the photodegradation of clofibric acid in water environment. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 584-591.
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