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| 1 | Uniform design ray in the assessment of combined toxicities of multi-component mixtures显示文摘Multi-component mixture(MCM) is a complicated chemical system that contains a great deal of mixture rays with various mixture ratios, and each ray includes many mixtures with different concentration levels.Currently, in combined toxicity field, almost all studies on MCM focus on the mixtures designed by the equivalenteffect concentration ratio(EECR) procedure. However, the EECR mixtures cannot represent the whole mixture system because the EECR mixtures are located on one mixture ray in concentration space formed by multiple components. In our view, some optimal experimental design such as the uniform design(UD) should be used to effectively select many representative mixture rays from the MCM system,instead of single EECR ray. The uniform design ray(UDray) integrating UD idea with fixed-ratio ray design can systematically and comprehensively measure the combined toxicity changes in the MCM system. This review introduces the operation method, construction of uniform table and corresponding usable table, and some cases of application of the UD-ray to help readers easily use UD-ray in their MCM toxicity assessment. | Shu-Shen Liu Qian-Fen Xiao Jin Zhang Mo Yu | 2016 | Science Bulletin2016，61，1： | 20 |
| 2 | 溶解性有机质对持久性有机污染物环境行为的影响研究进展显示文摘持久性有机污染物(POPs)是一类具有生物累积性的难降解污染物,严重危害人体健康。广泛存在于环境介质中的溶解性有机质(DOM)多是污染物的天然有机配体和迁移载体,显著影响污染物的环境行为。系统总结了DOM对POPs环境行为影响方面的研究进展,DOM通过疏水分配、氢键、范德华力等多种作用与POPs结合形成DOM-POPs复合物,显著影响POPs在环境介质中的吸附与解吸、迁移与传输、转化与降解等环境行为,进而改变POPs生物有效性及其在生物体内的蓄积特征。最后对该领域今后的研究方向进行了探讨。 | 谢冰心 王姝 孙辉 陈玉雯 范诗雨 李鑫 | 2020 | 环境污染与防治2020，42，12： | 9 |
| 3 | Photochemical alteration of biogenic particles in wastewater effluents显示文摘Biogenic particles discharged by wastewater treatment plants play important roles in receiving water because of the large specific surface area and good mobility of the particles. In this study, the changes induced in biogenic particles by natural sunlight were investigated to understand the phototransformation of the particles in the receiving waters. The results showed that photoexposure resulted in significant decreases in the sizes of the biogenic particles but that photoexposure did not impact the zeta potentials. In addition, the photodissolution of biogenic particulate organic matter(POM) led to the generation of biogenic dissolved organic matter(DOM). Characterization using excitation–emission matrix(EEM) spectroscopy showed that photoexposure changed both the shapes and the intensities of the EEM spectra of the biogenic POM; the regions of the T1 and T2 peaks were susceptible to photoexposure. Modeling by parallel factor analysis(PARAFAC) decomposed the EEMs of the biogenic POM into four valid components, i.e., terrestrial or microbial humic-like substances, tryptophan-like proteins, tyrosinelike proteins and hydrophobic proteins. The humic-like substances in the biogenic POM from the effluents were subject to lower decreases(17.0 % and 11.6 %).Throughout the entire incubation time, the PARAFAC components in the biogenic DOM were dominated by elimination mechanisms rather than by production through photodissolution of the biogenic POM. | Xiaofang Yang Zengquan Li Fangang Meng Zhigang Wang Li Sun | 2014 | Chinese Science Bulletin2014，59，28： | 2 |
| 4 | 溶解性有机质对低影响开发设施运行影响的研究进展显示文摘低影响开发(LID)设施在治理城市内涝和径流污染中发挥重要作用,在我国海绵城市建设中应用广泛。溶解性有机质(DOM)是一类具有较强的吸附、络合作用的溶解态物质,其质量占比高达径流污染物的50%以上。为阐明DOM对LID设施运行的影响,结合国内外研究现状及进展,综述DOM自身性质及其对LID设施中重金属(HMs)、持久性有机物(POPs)的归趋以及对微生物环境的影响,指出DOM会通过吸附、络合与HMs、POPs作用,造成LID设施填料吸附位点饱和、填料堵塞、微生物相对丰度(RAs)改变等。本研究旨在为LID设施设计和运行优化提供参考。 | 李家科 晁森豪 段小龙 | 2023 | 水资源保护2023，39，3： | 0 |
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