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黄河三角洲石油烃污染下芦苇营养器官中5 种重金属的富集和迁移 期刊论文
湿地科学, 2019, 卷号: 17, 期号: 4, 页码: 485-491
作者:  邹艳梅;  李沅蔚;  孙志高;  王传远
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黄河三角洲石油烃污染下芦苇营养器官中5种重金属的富集和迁移 期刊论文
湿地科学, 2019, 卷号: 17, 期号: 4, 页码: 485-492
作者:  邹艳梅;  李沅蔚;  孙志高;  王传远
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重金属  石油烃  芦苇  富集  迁移  黄河三角洲  Heavy Metal  Petroleum Hydrocarbon  Phragmites Australis  Accumulation  Migration  The Yellow River Delta  
黄河三角洲油田区土壤重金属的垂直分布规律及其影响因素 期刊论文
环境化学, 2019, 卷号: 38, 期号: 11, 页码: 2583-2593
作者:  李沅蔚;  邹艳梅;  王传远
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土壤粒度  重金属  石油污染  垂直分布  Toc  Soil Particle Size  Heavy Metals  Toc  Petroleum Pollution  Vertical Distribution  
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
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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.  
烟台四十里湾潮间带表层沉积物中铁的形态研究 期刊论文
海洋环境科学, 2019, 卷号: 38, 期号: 4, 页码: 555-560
作者:  王晨晨;  潘大为;  韩海涛;  胡雪萍
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表层沉积物  铁  形态研究  烟台四十里湾  潮间带  Surface Sediment  Iron  Speciation  Yantai Sishili Bay  Intertidal Zone  
渤海石油-重金属复合污染生物修复的初步探讨 期刊论文
环境化学, 2019, 卷号: 38, 期号: 1, 页码: 186-194
作者:  李沅蔚;  王传远;  邹艳梅;  吕双燕
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