US EPA

3494376 

Journal Article 

Determination of phthalate esters in airborne particulates by heterogeneous photo-Fenton catalyzed aromatic hydroxylation fluorimetry 

Zeng, HH; Li, XQ; Hao, WL; Zhang, LZ; Wei, T; Zhao, XF; Liu, YY; Li, JH 

2017 

Yes 

Journal of Hazardous Materials
ISSN: 0304-3894
EISSN: 1873-3336 

Elsevier B.V. 

324 

Pt B 

250-257 

English 

27817874 

10.1016/j.jhazmat.2016.10.055 

WOS:000390182600015 

https://search.proquest.com/docview/2116902783?accountid=171501
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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-BiFeO3 to 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(-7) to 4.8×10(-5)molL(-1) for DEP with correlation coefficient of 0.9997, and the sensitivity of the method was high with detection limit of 5.43×10(-8)molL(-1). The method has been successfully applied to determine total PAEs in airborne particulates with satisfactory results. 

Airborne particulates; Fluorimetry; Heterogeneous photo-Fenton; Phthalate esters; Vermiculite supported BiFeO3; article; fluorescence; fluorometry; hydroxyl radicals; hydroxylation; particulates; phthalates; pollution; vermiculite; wavelengths