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| Analytical method and speciation characteristics of 9-fluorenone and 9, 10-anthraquinone in soil |
| Received:December 27, 2022 |
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| KeyWord:oxygenated polycyclic aromatic hydrocarbons(OPAHs);soil;speciation;bioavailability;9-fluorenone;9, 10-anthraquinone |
| Author Name | Affiliation | E-mail | | GU Peng | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | | | TANG Jiahao | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | | | ZHAO Qingqing | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | | | WANG Leilei | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | | | WANG Jianing | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | | | LU Yuan | College of Environmental Science and Engineering, Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, Nankai University, Tianjin 300350, China | | | ZHANG Wen | Qilu University of Technology(Shandong Academy of Sciences), Ecology Institute of Shandong Academy of Sciences, Shandong Provincial Key Laboratory of Applied Microbiology, Jinan 250103, China | zw-sunshine@163.com |
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| Abstract: |
| To explore the speciation characteristics of typical oxygenated polycyclic aromatic hydrocarbon(OPAHs) in soil, 9-fluorenone and 9, 10-anthraquinone were used as representative OPAHs and their extraction and determination methods in different environmental media were established. Their various speciations in soil within 30 d were analyzed. The results showed that the recovery of 9-fluorenone and 9, 10-anthraquinone in soil was 102.4%-104.2% using a methanol-dichloromethane(1:1, V/V) solution as an extractant to perform ultrasonic extraction and high performance liquid chromatography(HPLC) analysis. 9-fluorenone and 9, 10-anthraquinone in aqueous and bioavailable(hydroxypropyl-β-cyclodextrin) phases were analyzed by liquid-liquid extraction with dichloromethane as an extractant followed by HPLC, and the recoveries were 87.2%-87.8% and 78.7%-86.3%, respectively. The speciation distribution of the two OPAHs in soil within 30 d was studied using the successive extraction method. The order of the sum of the contents of 9-fluorenone and 9, 10-anthraquinone in different forms was non-desorbed form > crude humin-bound form > kerogen-bound form > bioavailable form > humic acid-bound form > fulvic acid-bound form > mineral-bound form. The extractable form, which is the sum of the bioavailable and nondesorbed forms, was the main component(58.0%), and the bound form also accounted for a large proportion(42.0%). The content of OPAHs bound to organic matter was higher than that bound to minerals. The bioavailability of 9-fluorenone and 9, 10-anthraquinone decreased rapidly within the first 15 d and slowed down during the subsequent 15 d. The bioavailability of 9-fluorenone decreased faster than that of 9, 10-anthraquinone. |
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