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浏览/检索结果: 共11条，第1-10条 帮助

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Naked-Eye Readout of Analyte-Induced NIR Fluorescence Responses by an Initiation-Input-Transduction Nanoplatform 期刊论文  OAI收割
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2020, 卷号: 59
作者:  Zhang, Dailiang;  Wang, Linlin;  Yuan, Xi;  Gong, Yijun;  Liu, Hongwen
  |  收藏  |  浏览/下载：43/0  |  提交时间：2020/10/21
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：142/0  |  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.  
Ratiometric Fluorescent Biosensor for Visual Discrimination of Cancer Cells with Different Telomerase Expression Levels 期刊论文  OAI收割
ACS SENSORS, 2018, 卷号: 3, 期号: 4, 页码: 757-762
作者:  He, Changtian;  Liu, Zhengjie;  Wu, Qilong;  Zhao, Jun;  Liu, Renyong
  |  收藏  |  浏览/下载：28/0  |  提交时间：2019/08/23
Highly stable and reusable imprinted artificial antibody used for in situ detection and disinfection of pathogens 期刊论文  OAI收割
chemical science, 2015, 卷号: 6, 期号: 5, 页码: 2822-2826
作者:  Zhang,Zhijun;  Guan,Yijia;  Li,Meng;  Zhao,Andong;  Ren,Jinsong
收藏  |  浏览/下载：99/0  |  提交时间：2016/05/03
Highly sensitive visual detection of copper (II) using water-soluble azide-functionalized gold nanoparticles and silver enhancement 期刊论文  OAI收割
BIOSENSORS & BIOELECTRONICS, 2014, 卷号: 59, 页码: 40-44
作者:  Zhang, Zhen;  Li, Wenqing;  Zhao, Qiuling;  Cheng, Ming;  Xu, Li
  |  收藏  |  浏览/下载：15/0  |  提交时间：2019/04/09
Fast naked-eye detection of amines with viologen derivatives 期刊论文  OAI收割
SUPRAMOLECULAR CHEMISTRY, 2013, 卷号: 25, 期号: 6, 页码: 344-348
作者:  Wang, Yuping;  Xu, Shu;  Gao, Fan;  Chen, Qi;  Ni, Ben-Bo
  |  收藏  |  浏览/下载：58/0  |  提交时间：2019/04/09
Chemical redox-regulated mesoporous silica-coated gold nanorods for colorimetric probing of Hg(2+) and S(2-) 期刊论文  OAI收割
ANALYST, 2011, 卷号: 136, 期号: 1, 页码: 174-178
作者:  Wang, Wenhai;  Chen, Zhaopeng;  Chen, Lingxin
收藏  |  浏览/下载：34/0  |  提交时间：2011/11/11
A highly selective naked-eye probe for hypochlorite with the p-methoxyphenol-substituted aniline compound 期刊论文  OAI收割
TETRAHEDRON LETTERS, 2010, 卷号: 51, 期号: 46, 页码: 6052-6055
作者:  Cui, Kai;  Zhang, Deqing;  Zhang, Guanxin;  Zhu, Daoben
  |  收藏  |  浏览/下载：70/0  |  提交时间：2019/04/09
A highly selective naked-eye probe for hypochlorite with the p-methoxyphenol-substituted aniline compound 期刊论文  iSwitch采集
Tetrahedron letters, 2010, 卷号: 51, 期号: 46, 页码: 6052-6055
作者:  Cui, Kai;  Zhang, Deqing;  Zhang, Guanxin;  Zhu, Daoben
收藏  |  浏览/下载：68/0  |  提交时间：2019/05/10
Fluoride-enhanced lanthanide luminescence and white-light emitting in multifunctional Al(3)Ln(2) (Ln = Nd, Eu, Yb) heteropentanuclear complexes 期刊论文  OAI收割
Chemical Communications, 2009, 期号: 47, 页码: 7318-7320
H. B. Xu, X. M. Chen, Q. S. Zhang, L. Y. Zhang and Z. N. Chen
收藏  |  浏览/下载：12/0  |  提交时间：2012/11/06