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Visual tracking of label-free microplastics in wheat seedlings and their effects on crop growth and physiology 期刊论文
JOURNAL OF HAZARDOUS MATERIALS, 2023, 卷号: 456, 页码: 9
作者:  Li, Ruijie;  Tu, Chen;  Li, Lianzhen;  Wang, Xinyao;  Yang, Jie;  Feng, Yudong;  Zhu, Xia;  Fan, Qiaohui;  Luo, Yongming
收藏  |  浏览/下载：37/0  |  提交时间：2024/01/26
Wheat seedlings  Microplastics  Uptake  Photosynthetic impairment  Oxidative damage  
Distribution and weathering characteristics of microplastics in paddy soils following long-term mulching: A field study in Southwest China 期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2023, 卷号: 858, 页码: 8
作者:  Yang, Jie;  Song, Kaifu;  Tu, Chen;  Li, Lianzhen;  Feng, Yudong;  Li, Ruijie;  Xu, Hua;  Luo, Yongming
收藏  |  浏览/下载：124/0  |  提交时间：2023/08/17
Mulching  Paddy soil  Microplastics  Distribution  Weathering characteristics  
Microplastics in an agricultural soil following repeated application of three types of sewage sludge: A field study 期刊论文
ENVIRONMENTAL POLLUTION, 2021, 卷号: 289, 页码: 8
作者:  Yang, Jie;  Li, Lianzhen;  Li, Ruijie;  Xu, Li;  Shen, Yichen;  Li, Simin;  Tu, Chen;  Wu, Longhua;  Christie, Peter;  Luo, Yongming
Adobe PDF(6754Kb)  |  收藏  |  浏览/下载：871/377  |  提交时间：2021/11/10
Microplastics  Repeated sludge application  Amended soil  Accumulation  Distribution characteristics  
Structural and Functional Characteristics of Microplastic Associated Biofilms in Response to Temporal Dynamics and Polymer Types 期刊论文
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 2021, 页码: 7
作者:  Tu, Chen;  Liu, Ying;  Li, Lianzhen;  Li, Yuan;  Vogts, Angela;  Luo, Yongming;  Waniek, Joanna J.
浏览  |  Adobe PDF(1074Kb)  |  收藏  |  浏览/下载：702/349  |  提交时间：2021/10/21
Microplastics  Biofilm  Morphology and structure  Microbial community  Biodegradation  
Abundance and morphology of microplastics in an agricultural soil following long-term repeated application of pig manure 期刊论文
ENVIRONMENTAL POLLUTION, 2021, 卷号: 272, 页码: 7
作者:  Yang, Jie;  Li, Ruijie;  Zhou, Qian;  Li, Lianzhen;  Li, Yuan;  Tu, Chen;  Zhao, Xinyue;  Xiong, Kuanxu;  Christie, Peter;  Luo, Yongming
浏览  |  Adobe PDF(1980Kb)  |  收藏  |  浏览/下载：889/462  |  提交时间：2021/06/07
Accumulation  Farmland soil  Long-term fertilization  Microplastics  Morphology  Pig manure  
Characteristics and distribution of microplastics in the coastal mangrove sediments of China 期刊论文
SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 卷号: 703, 页码: 134807
作者:  Zhou, Q;  Tu, C;  Fu, CC;  Li, Y;  Zhang, HB;  Xiong, KX;  Zhao, XY;  Li, LZ;  Waniek, JJ;  Luo, YM
浏览  |  Adobe PDF(3207Kb)  |  收藏  |  浏览/下载：1075/639  |  提交时间：2020/07/08
Microplastics  Mangrove sediments  Surface morphologies  Abundance  Spatial distribution  
黄海桑沟湾水体及沉积物中微塑料污染特征研究 期刊论文
海洋环境科学, 2019, 卷号: 38, 期号: 2, 页码: 198-204
作者:  熊宽旭;  赵新月;  周倩;  付传城;  涂晨;  李连祯;  骆永明
收藏  |  浏览/下载：294/0  |  提交时间：2020/06/17
桑沟湾  微塑料  潮滩  丰度  空间分布  Sanggou bay  microplastics  tidal flats  abundance  spatial distribution  In recent years,research on microplastics pollution in the marine environment has been increasing,but studies on microplastics in water bodies and sediments of the bay under the influence of high-intensity human activities are still rarely reported. In this study,the pollution characteristics of microplastics in the wayer and sediments of Sanggou bay were investigated in December 2017,after the harvest of large-scale aquaculture,with the aim to study the effects of aquaculture activities and hydrodynamics on pollution characteristics and spatial distribution of microplastics in the bay. The results showed that the types of microplastics in the water and sediments of Sanggou bay were mainly fibers,fragments,films,foams and particles. The microplastic abundances in the water and sediments were 1.8 ~ 31.2 N/L,31.2 ~ 1246.8 N/kg,respectively. The average particle sizes of microplastics in water and sediments were 0.51 0.20 mm and 1.54 1.02 mm,respectively. The results of spatial distribution of microplastics in Sanggou bay showed that the high abundance area mainly appears in the inshore waters,and the abundance of microplastics tends to decrease from the inner areas of estuary to the outshore areas. The heterogeneity of microplastic abundance and spatial distribution in Sanggou bay is mainly affected by human activities such as aquaculture,living and shipping,as well as hydrodynamics. In the future,fine sampling and analysis are needed to fully understand the temporal and spatial distribution of microplastics pollution in the bay areas.  
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：487/0  |  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.  
重视土壤中微塑料污染研究 防范生态与食物链风险 期刊论文
中国科学院院刊, 2018, 卷号: 31, 期号: 10, 页码: 1021-1030
作者:  骆永明;  周倩;  章海波;  潘响亮;  涂晨;  李连祯;  杨杰
收藏  |  浏览/下载：286/0  |  提交时间：2020/06/17
微塑料  土壤  环境行为  复合污染  生态和食物链风险  监管和修复  microplastics, soil, environmental behavior, combination pollution, ecological and food chain risks, governance and remediation