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禾本科作物小麦能吸收和积累聚苯乙烯塑料微球 期刊论文  OAI收割
科学通报, 2020, 卷号: 65.0, 期号: 020, 页码: 2120-2127
作者:  李瑞杰;  李连祯;  张云超;  杨杰;  涂晨
  |  收藏  |  浏览/下载：28/0  |  提交时间：2021/06/16
食用蔬菜能吸收和积累微塑料 期刊论文  OAI收割
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：139/0  |  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.  
无皂乳液种子聚合法合成免疫磁珠及其光谱性能 期刊论文  OAI收割
光谱学与光谱分析, 2018, 卷号: 38, 期号: S1, 页码: 49-50
作者:  朱向阳;  于杰淼;  杨良嵘;  刘会洲
  |  收藏  |  浏览/下载：23/0  |  提交时间：2019/06/17
氯化银光引发聚合制备单分散聚苯乙烯微球 期刊论文  OAI收割
材料研究学报, 2016, 期号: 11, 页码: 868-874
杨莹; 赵岩; 颜雨坤; 张劲松
收藏  |  浏览/下载：37/0  |  提交时间：2016/12/28
一种温敏型超大孔生物分离介质的制备及表征 期刊论文  OAI收割
高分子学报, 2015, 期号: 1, 页码: 57-64
作者:  曲剑波;  陈艳丽;  宦关生;  周炜清;  张晓云
收藏  |  浏览/下载：25/0  |  提交时间：2015/05/13
组合固定化蛋白酶水解酵母蛋白制备抗氧化多肽 学位论文  OAI收割
硕士: 中国科学院研究生院, 2013
刁文锦
收藏  |  浏览/下载：52/0  |  提交时间：2014/05/23
聚苯乙烯基微球固定化Pd-卟啉在Heck反应中的应用研究 学位论文  OAI收割
硕士: 中国科学院研究生院, 2013
黄寅斌
收藏  |  浏览/下载：34/0  |  提交时间：2014/06/26
聚苯乙烯微球固定化的Pd卟啉:高效可重复利用的Heck反应催化剂 期刊论文  OAI收割
计算机与应用化学, 2013, 期号: 05, 页码: 473-476
黄寅斌; 杨良嵘; 孙西同; 周华从; 李文松; 刑慧芳; 隋娜; 刘会洲
收藏  |  浏览/下载：24/0  |  提交时间：2014/08/27
聚苯乙烯微球吸附脂肪酶催化油酸环氧化的研究 期刊论文  OAI收割
离子交换与吸附, 2013, 期号: 03, 页码: 200-210
樊亚超; 张松平; 马光辉; 周炜清; 苏志国; 张羽飞
收藏  |  浏览/下载：24/0  |  提交时间：2014/08/27
流体力学半径对估算胶体微球聚集速率常数的影响 期刊论文  OAI收割
物理化学学报=Acta Physico-Chimica Sinica, 2010, 卷号: 26, 期号: 10, 页码: 2807-2812
作者:  杜嬛;  徐升华;  孙祉伟;  阿燕
收藏  |  浏览/下载：35/0  |  提交时间：2010/05/03