https://scholars.lib.ntu.edu.tw/handle/123456789/606032
標題: | Monitoring of ion release, bioavailability and ecotoxicity of thallium in contaminated paddy soils under rice cultivation conditions | 作者: | Hsu Y.-C Thia E Chen P.-J. PEI-JEN CHEN |
關鍵字: | Drainage;K fertilizers;Medaka fish (Oryzias latipes);Technological critical elements (TCEs);Thallium (Tl);Biochemistry;Cultivation;Fertilizers;Risk assessment;Soils;Thallium;Toxicity;Body burden;Ecotoxicity;Ion release;K fertilizer;Medaka fish (oryzia latipe);Paddy fields;Paddy soils;Rice cultivation;Technological critical element;thallium;analysis;bioavailability;ecosystem;Oryza;soil;soil pollutant;toxicity;Biological Availability;Ecosystem;Soil;Soil Pollutants | 公開日期: | 2022 | 卷: | 424 | 來源出版物: | Journal of Hazardous Materials | 摘要: | Paddy soils contaminated by thallium (Tl) have been frequently reported; however, their ecotoxicological impact in the paddy field is less known. We used a novel soil–fish exposure system with larvae of rice fish medaka (Oryzias latipes) to assess the bioavailability of Tl from soils to fish and causal toxicity under simulated conditions of rice cultivation. Two acidic soils [Pingzhen (Pc) and Sankengtzu (Sk)] spiked with monovalent Tl [Tl(I), 75–250 mg/kg] released higher Tl+ into pore or overlying waters than neutral soils [Sangkang (Su)], which resulted in higher mortality to exposed fish. The addition of K fertilizers into the system did not significantly reduce Tl release and fish mortality, but a drainage/re-flooding treatment worked effectively. The acidic Pc soil contaminated with low Tl(I) (2.5 and 15 mg/kg) caused higher sublethal toxicity in medaka than the neutral Su soil, including altered growth and swimming behavior with increased Tl body burden. These Tl-induced effects by low-Tl soils were significantly alleviated by K addition. The Tl/K ratios in aqueous phases were correlated with the mortality or Tl body burden in exposed fish. This study provides useful bio-analytical evidence that can help assess the ecological risks of Tl pollution in paddy field-related ecosystems. ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110179498&doi=10.1016%2fj.jhazmat.2021.126513&partnerID=40&md5=335cdb79be5a230f2cc9b50a226c9c94 https://scholars.lib.ntu.edu.tw/handle/123456789/606032 |
ISSN: | 03043894 | DOI: | 10.1016/j.jhazmat.2021.126513 |
顯示於: | 農業化學系 |
在 IR 系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。