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分子印迹聚合物在磺胺类抗生素残留检测中的 样品前处理应用研究进展 期刊论文
海岸科学, 2019, 卷号: 6, 期号: 2, 页码: 8-21
作者:  李金花;  王艺晓;  王莉燕;  陈令新
Adobe PDF(1121Kb)  |  收藏  |  浏览/下载：256/46  |  提交时间：2021/11/12
磺胺类抗生素  分子印迹聚合物  样品前处理  固相萃取  印迹技术  印迹策略  
针对壳聚糖季铵盐的衍生化修饰及生物活性研究 学位论文
, 北京: 中国科学院大学, 2019
作者:  魏丽杰
Adobe PDF(7807Kb)  |  收藏  |  浏览/下载：274/0  |  提交时间：2021/01/13
壳聚糖  化学修饰  季铵盐  抗氧化  抑菌  
海岸带环境中大塑料和微塑料的组成、鉴别及来源研究 ——以黄海桑沟湾为例 学位论文
工学硕士, 中国科学院烟台海岸带研究所: 中国科学院大学, 2019
作者:  赵新月
Adobe PDF(5314Kb)  |  收藏  |  浏览/下载：466/5  |  提交时间：2019/06/27
大塑料  微塑料  源清单  源识别  桑沟湾  
海洋微塑料在海洋运移过程的研究进展 期刊论文
海岸科学, 2019, 卷号: 6, 期号: 1, 页码: 22-29
作者:  李艳芳
Adobe PDF(674Kb)  |  收藏  |  浏览/下载：310/79  |  提交时间：2021/11/11
海洋  微塑料  运移  漂浮  沉降  
海洋微塑料输运的数值模拟研究进展 期刊论文
地球科学进展, 2019, 卷号: 34, 期号: 1, 页码: 72-83
作者:  张晨;  王清;  赵建民
Adobe PDF(1488Kb)  |  收藏  |  浏览/下载：433/137  |  提交时间：2020/07/08
微塑料  数值模拟  输运  海洋动力过程  Microplastics  Numerical Simulation  Transportation Of Microplastics  Marine Dynamic Process  
食用蔬菜能吸收和积累微塑料 期刊论文
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者:  李连祯;  周倩;  尹娜;  涂晨;  骆永明
收藏  |  浏览/下载：494/0  |  提交时间：2020/06/17
微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.  
新型铁铜锰复合氧化物颗粒吸附剂As(Ⅲ)吸附行为与机制研究 期刊论文
环境科学学报, 2019, 卷号: 39, 期号: 8, 页码: 2575-2585
作者:  王建燕;  张传巧;  陈静;  张高生
浏览  |  Adobe PDF(2977Kb)  |  收藏  |  浏览/下载：467/181  |  提交时间：2020/07/08
颗粒吸附剂  铁铜锰复合氧化物  吸附  氧化  再生  As(ⅲ)  Granular Sorbent  Fe-cu-mn Trimetal Oxide  Arsenite  Sorption  Oxidation  Regeneration