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浏览/检索结果: 共12条，第1-10条 帮助

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海洋微塑料对海水青鳉毒性效应研究进展分析 CNKI期刊论文  OAI收割
2023
作者:  马健;  李友训;  于道德;  赵中华;  田敬云
  |  收藏  |  浏览/下载：9/0  |  提交时间：2024/12/18
表面增强拉曼散射探针标记纳米塑料在菲律宾蛤仔（Ruditapes philippinarum）体内行为研究 学位论文  OAI收割
中国科学院烟台海岸带研究所: 中国科学院大学, 2022
作者:  杜泓钰
  |  收藏  |  浏览/下载：27/0  |  提交时间：2024/03/20
微塑料对微藻生长及其释放三卤代甲烷的影响 CNKI期刊论文  OAI收割
2021
作者:  郎小平;  何真;  陈岩;  周立敏;  杨桂朋
  |  收藏  |  浏览/下载：4/0  |  提交时间：2024/12/18
微塑料和芘对菲律宾蛤仔的毒性效应研究 期刊论文  OAI收割
海洋通报, 2021, 卷号: 40, 期号: 6, 页码: 644-656
作者:  柳佳佳;  朱效鹏;  滕佳;  赵建民;  李成华
  |  收藏  |  浏览/下载：3/0  |  提交时间：2024/01/26
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：147/0  |  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.  
海岸环境中两类软质微塑料表面生物膜DNA的提取方法比较与优化 期刊论文  OAI收割
海洋学报, 2018, 卷号: 40, 期号: 12, 页码: 112-119
作者:  陈涛;  涂晨;  郭鹏鹏
  |  收藏  |  浏览/下载：46/0  |  提交时间：2020/07/07
减少LNG储罐罐壁混凝土层温度波动的技术研究 会议论文  OAI收割
中国工程热物理学会-传热传质, 2013
梁卓; 刘豫龙; 徐明海; 贾欣鑫; 胡国华
收藏  |  浏览/下载：28/0  |  提交时间：2013/11/28
用SBS或SBR或BR改进HIPS的冲击性能 期刊论文  OAI收割
合成橡胶工业, 1995, 卷号: 18, 期号: 4, 页码: 226-228
杨军，刘景江
收藏  |  浏览/下载：136/14  |  提交时间：2010/12/30
高抗冲聚苯乙烯的断裂韧性 期刊论文  OAI收割
高分子材料科学与工程, 1994, 期号: 6, 页码: 1-5
刘景江
收藏  |  浏览/下载：31/2  |  提交时间：2010/12/30
高抗冲聚苯乙烯的形态与性能 期刊论文  OAI收割
塑料工业, 1993, 期号: 5, 页码: 35-38
刘景江; 张芬玉; 周华荣; 曲桂杰
收藏  |  浏览/下载：60/0  |  提交时间：2011/01/19