期刊
CLEAN-SOIL AIR WATER
卷 44, 期 9, 页码 1163-1173出版社
WILEY-BLACKWELL
DOI: 10.1002/clen.201500807
关键词
Gas chromatography; mass spectrometry; Organophosphate flame retardants; Soil; Sorption
类别
资金
- National Natural Science Foundation of China [21307097]
- Industrial research project of Science and Technology Department of Shaanxi Province [2014K10-02]
- Fundamental Research Funds for the Central Universities
Organophosphate flame retardants (OPFRs) are classified as re-emerging pollutants and studies on their environmental fate, e.g., sorption behavior on soil are still limited. In this paper, three kinds of OPFRs, tri (n-butyl) phosphate (TnBP), tris (2-butoxyethyl) phosphate (TBEP), and tris (2-chloroethyl) phosphate (TCEP) were selected and their sorption properties on Pahokee peat soil with high organic matter were investigated by solid phase micro-extraction coupled with gas chromatography-mass spectrometry. The sorption kinetics of TnBP, TBEP, and TCEP was found to confirm to the pseudo-second-order kinetic model and the sorption rate was controlled by boundary layer diffusion. The Langmuir isotherm model expressed the sorption equilibrium data well, in which TnBP exhibited the strongest affinity to Pahokee peat soil followed by TBEP and TCEP. Sorption thermodynamics indicated that lower temperature was beneficial to the sorption process.
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