Determination of phthalate esters in airborne particulates by heterogeneous photo-Fenton catalyzed aromatic hydroxylation fluorimetry.
The environmental contaminants phthalic acid esters (PAEs) were determined by aromatic hydroxylation fluorimetry combined with heterogeneous photo-Fenton process in the presence of vermiculite supported BiFeO3(VMT-BiFeO3). In strong alkaline solution, PAEs were hydrolyzed into phthalates with no fluorescence, which then reacted with hydroxyl free radicals produced in photo-Fenton process catalyzed by VMT-BiFeO3to form the fluorescent hydroxyl phthalates. The fluorescence intensity was proportional to the concentration of PAEs with the maximum excitation and emission wavelength of 300nm and 417nm, respectively. A good linear relationship can be obtained in the range of 3.8×10-7to 4.8×10-5molL-1for DEP with correlation coefficient of 0.9997, and the sensitivity of the method was high with detection limit of 5.43×10-8molL-1. The method has been successfully applied to determine total PAEs in airborne particulates with satisfactory results.
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
He-Hua
HH
Zeng
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
Xue-Qin
XQ
Li
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
Wen-Li
WL
Hao
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
Li-Zhong
LZ
Zhang
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
Ting
T
Wei
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China. Electronic address: zhaoxiufeng19670@126.com.
Xiu-Feng
XF
Zhao
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China.
Yu-Yan
YY
Liu
Department of Chemistry and Applied Chemistry, Changji University, Changji 831100 Xinjiang, China; National Engineering Laboratory for Green Chemical Productions of Alcohols-Ethers-Esters, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. Electronic address: jhli@xmu.edu.cn.
Jian-Hui
JH
Li
Airborne particulates; Fluorimetry; Heterogeneous photo-Fenton; Phthalate esters; Vermiculite supported BiFeO(3)