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| Enantioselective behavior of typical polycyclic musks in soil-wheat systems |
| Received:May 09, 2017 |
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| KeyWord:polycyclic musks;GC-MS;enantiomeric separation;enantiomeric composition |
| Author Name | Affiliation | E-mail | | XU Hui-lin | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | | | CHEN Cui-hong | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | chencuih@nankai.edu.cn | | ZENG Wen-lu | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | | | LU Yuan | Key Laboratory of Pollution Processes and Environmental Criteria, Ministry of Education, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China | |
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| Abstract: |
| Galaxolide(HHCB) and tonalide(AHTN) are common polycyclic chiral synthetic musks. The enantiomers/diastereomers of HHCB and AHTN were separated by gas chromatography-mass spectrometry(GC-MS) by connecting a HP-5MS column to the outlet of a Cyclosil-B column. Using an indoor pot-culture experiment, the enantiomeric compositions of racemic HHCB and racemic AHTN were determined as a reference. The enantiomeric compositions of HHCB and AHTN in the rhizosphere soil and wheat seedlings were also studied. The ERtrans and ERcis values(ER=enantiomeric ratio) of HHCB in the rhizosphere soil were 1.13 and 1.09, respectively, and those in the wheat seedlings were 1.32~1.50 and 1.17~1.57, which were significantly higher than the ER of racemic HHCB. The ER of AHTN in the rhizosphere soil was 1.07, and the ERs of AHTN in wheat seedlings were 1.46~1.58 which were significantly higher than the ER of racemic AHTN. The results showed that there was little enantioselective degradation of HHCB and AHTN in the rhizosphere soil, but there was considerable enantioselective accumulation in the wheat seedlings, and(4S,7R)-HHCB,(4S,7S)-HHCB, and 3R-AHTN were more prone to biological absorption in the wheat seedlings. |
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