CORC

在结果中检索

CORC

浏览/检索结果: 共181条，第1-10条 帮助

已选(0)清除 条数/页：   排序方式：
生物炭对土壤团聚体和钾素的影响 期刊论文
中国农村水利水电, 2020, 期号: 6, 页码: 92-97
作者:  王亚琼;  牛文全;  王婕;  李学凯;  邬梦龙
收藏  |  浏览/下载：16/0  |  提交时间：2022/01/07
土壤添加不同粘土矿物对微囊藻毒素在生菜中生物富集的影响 期刊论文
环境科学学报, 2020, 卷号: 40, 期号: 08, 页码: 2986-2992
作者:  操庆;  刘伟京;  谢丽强;  尤本胜;  姜伟立
收藏  |  浏览/下载：86/0  |  提交时间：2021/03/26
铅锌矿区及农田土壤中重金属的化学形态与生物有效性研究 学位论文
北京: 中国科学院大学, 2019
作者:  朱侠
收藏  |  浏览/下载：0/0  |  提交时间：2024/03/20
家用微型植物工厂结构设计与生菜栽培试验 期刊论文
农机化研究, 2019, 期号: 11, 页码: 98-103
作者:  魏轶凡[1];  毛罕平[2];  左志宇[3];  苏光灿[4];  卓敏敏[5]
收藏  |  浏览/下载：12/0  |  提交时间：2019/12/24
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：63/0  |  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.  
复合污染土壤上几种叶类蔬菜对Cd和As的富集效应 期刊论文
植物营养与肥料学报, 2019, 卷号: 025
-
收藏  |  浏览/下载：4/0  |  提交时间：2020/10/26
谁是入住植物工厂的主人 期刊论文
生命世界, 2019, 期号: 10, 页码: 30-35
作者:  李晶;  赖慧灵
收藏  |  浏览/下载：0/0  |  提交时间：2022/05/06
叶菜植物工厂 期刊论文
生命世界, 2019, 期号: 10, 页码: 39
作者:  李鹏;  王金龙
收藏  |  浏览/下载：3/0  |  提交时间：2022/05/06
博士学位论文—纳米二氧化铈对生菜（Lactuca sativa L.）和人肺癌细胞A549 的毒性效应研究 学位论文
北京: 中国科学院大学, 2018
作者:  王国华
收藏  |  浏览/下载：55/0  |  提交时间：2018/12/18
凹凸棒石及其改性材料对土壤镉生物有效性的影响与机制 期刊论文
环境科学, 2018, 卷号: 39, 期号: 10, 页码: 4744-4751
作者:  陈传胜;  陈卫平;  焦文涛;  陈展祥
收藏  |  浏览/下载：15/0  |  提交时间：2019/03/14

©版权所有 ©2017 CSpace - Powered by CSpace