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Geochemical signatures and human health risk evaluation of rare earth elements in soils and plants of the northeastern Qinghai-Tibet Plateau, China
期刊论文
JOURNAL OF ARID LAND, 2022, 卷号: 14, 期号: 11, 页码: 1258-1273
作者:
Li, Leiming
;
Wu, Jun
;
Lu, Jian
;
Zhang, Xiying
;
Xu, Juan
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浏览/下载:163/0
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提交时间:2023/08/17
rare earth elements
geochemical signatures
human health risk
carcinogenic risk
bio-concentration factor
Qinghai-Tibet Plateau
Critical target identification and human health risk ranking of metal ions based on mechanism-driven modeling
期刊论文
CHEMOSPHERE, 2022, 卷号: 301, 页码: 9
作者:
Wang, Xiaoqing
;
Teng, Yuefa
;
Ji, Chenglong
;
Wu, Huifeng
;
Li, Fei
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浏览/下载:308/0
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提交时间:2022/07/26
Metal ions
p53
QSAR
Genetic toxicity
Human health risk
Microplastic Pollution in Nearshore Sediment from the Bohai Sea Coastline
期刊论文
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY, 2020, 页码: 6
作者:
Zhu, Xiaopeng
;
Ran, Wen
;
Teng, Jia
;
Zhang, Chen
;
Zhang, Wenjing
;
Hou, Chaowei
;
Zhao, Jianmin
;
Qi, Xutong
;
Wang, Qing
Adobe PDF(1519Kb)
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浏览/下载:620/235
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提交时间:2020/07/08
NORTH YELLOW SEA
MARINE-ENVIRONMENT
HUMAN HEALTH
ABUNDANCE
IDENTIFICATION
ORGANISMS
PLASTICS
IMPACTS
ESTUARY
SYSTEM
近海环境中抗生素分析样品前处理技术的研究进展
期刊论文
色谱, 2020, 卷号: 38, 期号: 1, 页码: 95-103
作者:
吕敏
;
陈令新
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浏览/下载:640/276
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提交时间:2020/07/08
抗生素
近海
前处理技术
综述
antibiotics
coastal
pretreatment techniques
review
The widespread and massive usage of antibiotics for the prevention and treatment of diseases in human and animals have resulted in their continuous discharge into the environment, and finally, into the coastal environment through various pathways. Accumulation of antibiotics in aquatic organisms poses a great threat to ecological and human health, especially because it facilitates the generation and spread of bacterial resistance. Given the diverse range of antibiotics with various features, as well as their presence at low concentrations in the environment, it is imperative to develop pretreatment techniques for antibiotics in various matrices. In this paper, the pretreatment methods proposed in recent decades for antibiotics in coastal water, sediment, and biota are summarized, with emphasis on commonly used methods such as solid-phase extraction, solid-liquid extraction, matrix solid-phase dispersion, and QuEChERS. Additionally, the potential factors influencing the extraction performance and clean-up efficiency are analyzed. The advantages and disadvantages of the methods and their development are finally discussed.
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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浏览/下载:536/0
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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.
Evaluation Selenocysteine Protective Effect in Carbon Disulfide Induced Hepatitis with a Mitochondrial Targeting Ratiometric Near-Infrared Fluorescent Probe
期刊论文
ANALYTICAL CHEMISTRY, 2018, 卷号: 90, 期号: 13, 页码: 8108-8115
作者:
Han, Xiaoyue
;
Wang, Rui
;
Song, Xinyu
;
Yu, Fabiao
;
Chen, Lingxin
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Adobe PDF(6933Kb)
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浏览/下载:485/282
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提交时间:2020/07/08
PROTEIN-KINASE PATHWAYS
HUMAN HEALTH
SELENIUM
SELENOLS
CELLS
SELENOPROTEINS
SPECTROMETRY
DYSFUNCTION
TISSUES
PLASMA