中文版 | English

在结果中检索

YIC-IR

浏览/检索结果: 共7条，第1-7条 帮助

已选(0)清除 条数/页：   排序方式：
近10年华北背景大气PM_(2.5)中重金属健康风险及污染来源的变化 期刊论文
环境科学, 2023, 卷号: 44, 期号: 10, 页码: 5335-5343
作者:  石晓兰;  宗政;  彭辉;  张欣捷;  孙溶;  王晓平;  田崇国
收藏  |  浏览/下载：19/0  |  提交时间：2024/01/26
重金属  PM_(2.5)  来源  健康风险  华北  背景大气  
环渤海大气PAHs浓度和健康风险对新冠疫情管控的响应 期刊论文
地球化学, 2022, 页码: 1-9
作者:  马雯雯;  孙溶;  宗政;  田崇国;  李军;  张干
收藏  |  浏览/下载：12/0  |  提交时间：2024/01/26
新冠疫情  环渤海  大气PAHs  浓度  健康风险  
2014-2020年环渤海区域大气多环芳烃（PAHs）的污染特征与健康风险研究 学位论文
工程硕士: 中国科学院大学, 2022
作者:  马雯雯
Adobe PDF(5369Kb)  |  收藏  |  浏览/下载：227/4  |  提交时间：2022/06/15
环渤海  PAHs  污染特征  源贡献变化  健康风险  
大连海岸带夏、秋季大气沉降(微)塑料的赋存特征及其表面生物膜特性 期刊论文
环境科学, 2022, 卷号: 43, 期号: 4, 页码: 1821-1828
作者:  涂晨;  田媛;  刘颖;  张馨宁;  骆永明
收藏  |  浏览/下载：22/0  |  提交时间：2024/01/26
大气微塑料  赋存特征  生物膜  群落结构与功能  健康风险  
重金属在近岸海域海产品中的富集及其影响机制研究 学位论文
工学博士, 中国科学院烟台海岸带研究所: 中国科学院烟台海岸带研究所, 2021
作者:  林怡辰
Adobe PDF(10960Kb)  |  收藏  |  浏览/下载：464/3  |  提交时间：2021/06/21
海产品，重金属，健康风险评价，生物积累，营养级  
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：491/0  |  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.  
砣矶岛背景站PM_(2.5)中多环芳烃的来源及健康风险 期刊论文
科技导报, 2015, 卷号: 33, 期号: 6, 页码: 54-58
作者:  王晓平;  徐玥;  田崇国;  陈颖军;  宗政;  李军;  张干
浏览  |  Adobe PDF(2357Kb)  |  收藏  |  浏览/下载：714/215  |  提交时间：2015/07/30
Pm2.5  多环芳烃  砣矶岛  源解析  健康风险