Photodegradation of diclofenac in seawater by simulated sunlight irradiation: The comprehensive effect of nitrate, Fe(III) and chloride

N Zhang; J M Li; G G Liu; X L Chen; K Jiang

doi:10.1016/j.marpolbul.2017.02.024

Photodegradation of diclofenac in seawater by simulated sunlight irradiation: The comprehensive effect of nitrate, Fe(III) and chloride

Mar Pollut Bull. 2017 Apr 15;117(1-2):386-391. doi: 10.1016/j.marpolbul.2017.02.024. Epub 2017 Feb 12.

Authors

N Zhang¹, J M Li², G G Liu³, X L Chen², K Jiang⁴

Affiliations

¹ Center for Postdoctoral Studies, Postdoctors of Henan Normal University, Jianshe Road, Xinxiang 453007, PR China; Postdoctoral Research Base, Henan Institute of Science and Technology, Key Laboratory for Crops Pest Management of Xinxiang, Xinxiang 453003, PR China; Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Jianshe Road, Xinxiang 453007, PR China.
² Postdoctoral Research Base, Henan Institute of Science and Technology, Key Laboratory for Crops Pest Management of Xinxiang, Xinxiang 453003, PR China.
³ Center for Postdoctoral Studies, Postdoctors of Henan Normal University, Jianshe Road, Xinxiang 453007, PR China; Faculty of Environmental Science and Engineering, Guangdong University of Technology, Guangzhou 510006, PR China; Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Jianshe Road, Xinxiang 453007, PR China.
⁴ Center for Postdoctoral Studies, Postdoctors of Henan Normal University, Jianshe Road, Xinxiang 453007, PR China; Henan Key Laboratory for Environmental Pollution Control, Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control, Ministry of Education, Jianshe Road, Xinxiang 453007, PR China. Electronic address: 29164616@qq.com.

PMID: 28202281
DOI: 10.1016/j.marpolbul.2017.02.024

Abstract

Diclofenac is one of the most frequently detected pharmaceuticals in various aquatic environments. The photodegradation of diclofenac in the absence/presence of nitrate, Fe(III) and chloride, especially their interactions, were systematically studied. Under the study conditions, photodegradation rate was decreased with increasing nitrate, Fe(III) and chloride concentrations. Nitrate has an synergistic action for Fe(III). Nitrate and chloride have antagonistic effect. An antagonistic action is present between nitrate, Fe(III) and chloride. Moreover, a simple linear model which very well describes the results is given.

Keywords: Box-Behnken design; Diclofenac; Photodegradation; Simulated sunlight.

MeSH terms

Chlorides / chemistry
Diclofenac / chemistry*
Ferric Compounds / chemistry
Linear Models
Nitrates / chemistry
Photolysis*
Seawater / chemistry*
Sunlight*

Substances

Chlorides
Ferric Compounds
Nitrates
Diclofenac