Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension
In this work, the distribution of organic phosphorus (Po) species in sediment profiles of five shallow lakes was analyzed and its effect on the photo-release of dissolved phosphate (Pi) was investigated during sediment resuspension under simulated sunlight irradiation. The results show that Po was h...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019-09-01
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| Series: | Environment International |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0160412019305690 |
| _version_ | 1811263168570195968 |
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| author | Xiaolu Li Minli Guo Xiaodi Duan Jianwei Zhao Yumei Hua Yiyong Zhou Guanglong Liu Dionysios D. Dionysiou |
| author_facet | Xiaolu Li Minli Guo Xiaodi Duan Jianwei Zhao Yumei Hua Yiyong Zhou Guanglong Liu Dionysios D. Dionysiou |
| author_sort | Xiaolu Li |
| collection | DOAJ |
| description | In this work, the distribution of organic phosphorus (Po) species in sediment profiles of five shallow lakes was analyzed and its effect on the photo-release of dissolved phosphate (Pi) was investigated during sediment resuspension under simulated sunlight irradiation. The results show that Po was highly enriched in the surface sediment and gradually decreased as sediment depths increased: 33.10 ± 2.55–96.71 ± 7.60 mg/kg, 33.55 ± 2.34–142.86 ± 5.73 mg/kg, 57.50 ± 3.46–149.68 ± 7.67 mg/kg, 55.18 ± 4.67–168.73 ± 8.31 mg/kg, 98.75 ± 7.56–275.74 ± 10.70 mg/kg for Lake Hou, Lake Tuan, Lake Tangling, Lake Guozheng and Lake Miao, respectively. The photo-release amount of dissolved Pi in the resuspension composed of surface sediments was also higher than that of deep sediment during sediment resuspension under the simulated sunlight irradiation for 9 h. The potential reasons for these results are: (1) difference in morphology and composition of sediments at different depths: the mean particle size of sediment decreased first and then increased as sediment depths increased; (2) difference in composition of Po species with depths in the sediment profiles: more photolytic Po species existed in surface sediments confirmed by sequential extraction and 31P NMR analysis; and (3) more OH production in the resuspension composed of surface sediment under simulated sunlight irradiation, which directly influence the photo-release of dissolved Pi from photodegradation of organic phosphorus. All of these results indicate that the distribution of organic phosphorus species in the sediment profiles plays an important role in P cycle and its photodegradation during sediment resuspension may be one of the potential pathways for phosphate supplement in shallow lakes. Keywords: Sediment, Organic phosphorus, Photo-release, 31P NMR, Phosphate |
| first_indexed | 2024-04-12T19:39:49Z |
| format | Article |
| id | doaj.art-97d94b3e308747f4867cddae02cf5795 |
| institution | Directory Open Access Journal |
| issn | 0160-4120 |
| language | English |
| last_indexed | 2024-04-12T19:39:49Z |
| publishDate | 2019-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Environment International |
| spelling | doaj.art-97d94b3e308747f4867cddae02cf57952022-12-22T03:19:06ZengElsevierEnvironment International0160-41202019-09-01130Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspensionXiaolu Li0Minli Guo1Xiaodi Duan2Jianwei Zhao3Yumei Hua4Yiyong Zhou5Guanglong Liu6Dionysios D. Dionysiou7Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaEnvironmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH 45221-0012, USAKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, ChinaInstitute of Hydrobiology, The Chinese Academy of Sciences, Wuhan 430072, ChinaKey Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River), Ministry of Agriculture and Rural Affairs, College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China; Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA; Correspondence to: G. Liu, Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA.Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE), University of Cincinnati, Cincinnati, OH 45221-0012, USA; Corresponding author.In this work, the distribution of organic phosphorus (Po) species in sediment profiles of five shallow lakes was analyzed and its effect on the photo-release of dissolved phosphate (Pi) was investigated during sediment resuspension under simulated sunlight irradiation. The results show that Po was highly enriched in the surface sediment and gradually decreased as sediment depths increased: 33.10 ± 2.55–96.71 ± 7.60 mg/kg, 33.55 ± 2.34–142.86 ± 5.73 mg/kg, 57.50 ± 3.46–149.68 ± 7.67 mg/kg, 55.18 ± 4.67–168.73 ± 8.31 mg/kg, 98.75 ± 7.56–275.74 ± 10.70 mg/kg for Lake Hou, Lake Tuan, Lake Tangling, Lake Guozheng and Lake Miao, respectively. The photo-release amount of dissolved Pi in the resuspension composed of surface sediments was also higher than that of deep sediment during sediment resuspension under the simulated sunlight irradiation for 9 h. The potential reasons for these results are: (1) difference in morphology and composition of sediments at different depths: the mean particle size of sediment decreased first and then increased as sediment depths increased; (2) difference in composition of Po species with depths in the sediment profiles: more photolytic Po species existed in surface sediments confirmed by sequential extraction and 31P NMR analysis; and (3) more OH production in the resuspension composed of surface sediment under simulated sunlight irradiation, which directly influence the photo-release of dissolved Pi from photodegradation of organic phosphorus. All of these results indicate that the distribution of organic phosphorus species in the sediment profiles plays an important role in P cycle and its photodegradation during sediment resuspension may be one of the potential pathways for phosphate supplement in shallow lakes. Keywords: Sediment, Organic phosphorus, Photo-release, 31P NMR, Phosphatehttp://www.sciencedirect.com/science/article/pii/S0160412019305690 |
| spellingShingle | Xiaolu Li Minli Guo Xiaodi Duan Jianwei Zhao Yumei Hua Yiyong Zhou Guanglong Liu Dionysios D. Dionysiou Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension Environment International |
| title | Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension |
| title_full | Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension |
| title_fullStr | Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension |
| title_full_unstemmed | Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension |
| title_short | Distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo-release of phosphate during sediment resuspension |
| title_sort | distribution of organic phosphorus species in sediment profiles of shallow lakes and its effect on photo release of phosphate during sediment resuspension |
| url | http://www.sciencedirect.com/science/article/pii/S0160412019305690 |
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