Optical properties of straw-derived dissolved organic matter and growth inhibition of Microcystis aeruginosa by straw-derived dissolved organic matter via photo-generated hydrogen peroxide
文献类型:期刊论文
作者 | Ma, Hua1,2; Huang, Liping1,2; Zhang, Jie1,2; Shi, Dezhi1,2; Yang, Jixiang3![]() |
刊名 | ENVIRONMENTAL POLLUTION
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出版日期 | 2018-11-01 |
卷号 | 242页码:760-768 |
关键词 | Straw-derived Dissolved Organic Matter M. Aeruginosa Inhibition Optical Properties Ros |
ISSN号 | 0269-7491 |
DOI | 10.1016/j.envpol.2018.07.052 |
英文摘要 | Recent advances in research on algae inhibition by using low-cost straw proposed a possible mechanism that reactive oxygen species (ROS) generated by the solar irradiation of straw-derived dissolved organic matter (DOM) might contribute to cyanobacteria inhibition. However, this process is not clearly understood. Here, DOM from three types of straw (barley, rice, and wheat) and natural organic matter (NOM) isolates were investigated in terms of their photochemical properties and ROS generating abilities. Results demonstrated that the DOM derived from the aeration decomposition of barley straw (A-DOMbs) yielded the best formation efficiencies of hydrogen peroxide (H2O2) and hydroxyl radicals (center dot OH) under solar-simulated irradiation in all organic matter samples. Correlation analysis implies that optical parameters and phenolic hydroxyl group contents can signify ROS generating abilities of different DOM solutions. Bioassay results show that A-DOMbs possesses the highest inhibition performance for M. aeruginosa in all DOM samples, much higher than those of NOM isolates. The addition of catalase greatly relieves the inhibition performance, making the loss of chlorophyll a content decreased from 37.14% to 7.83% in 2 h for A-DOMbs, which implies that for cyanobacteria growth inhibition, photochemically-produced H2O2 from SOM is far more important than singlet oxygen (O-1(2)), center dot OH, and even SOM itself. Our results show that H2O2 photochemically generated from straw-derived DOM is able to result in rapid inhibition of M. aeruginosa in a relatively short period, furthering the understanding of complicated mechanisms of cyanobacteria inhibition by using low-cost straw in eutrophic waters. (C) 2018 Elsevier Ltd. All rights reserved. |
资助项目 | National Natural Science Foundation of China[2140715] ; Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, CAS[RAF2014AA02B] ; Special Fund of Basic Scientific Research of the Central University[106112016CDJXY210001] ; Special Fund of Basic Scientific Research of the Central University[106112017CDJQJ218845] |
WOS研究方向 | Environmental Sciences & Ecology |
语种 | 英语 |
WOS记录号 | WOS:000446150300081 |
出版者 | ELSEVIER SCI LTD |
源URL | [http://119.78.100.138/handle/2HOD01W0/6849] ![]() |
专题 | 水质生物转化研究中心 |
作者单位 | 1.Chongqing Univ, Key Lab Three Gorges Reservoir Reg Ecoenvironm, Minist Educ, 83 Shabeijie St, Chongqing 400045, Peoples R China 2.Chongqing Univ, Dept Environm Engn, Chongqing, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China |
推荐引用方式 GB/T 7714 | Ma, Hua,Huang, Liping,Zhang, Jie,et al. Optical properties of straw-derived dissolved organic matter and growth inhibition of Microcystis aeruginosa by straw-derived dissolved organic matter via photo-generated hydrogen peroxide[J]. ENVIRONMENTAL POLLUTION,2018,242:760-768. |
APA | Ma, Hua,Huang, Liping,Zhang, Jie,Shi, Dezhi,&Yang, Jixiang.(2018).Optical properties of straw-derived dissolved organic matter and growth inhibition of Microcystis aeruginosa by straw-derived dissolved organic matter via photo-generated hydrogen peroxide.ENVIRONMENTAL POLLUTION,242,760-768. |
MLA | Ma, Hua,et al."Optical properties of straw-derived dissolved organic matter and growth inhibition of Microcystis aeruginosa by straw-derived dissolved organic matter via photo-generated hydrogen peroxide".ENVIRONMENTAL POLLUTION 242(2018):760-768. |
入库方式: OAI收割
来源:重庆绿色智能技术研究院
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