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Microanalysis of Multi-Element in Juncus effusus L. by LIBS Technique 被引量:2
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作者 刘晓娜 黄建梅 +5 位作者 吴志生 张乔 史新元 赵娜 贾帅芸 乔延江 《Plasma Science and Technology》 SCIE EI CAS CSCD 2015年第11期904-908,共5页
Laser-induced breakdown spectroscopy (LIBS) was used to decipher the unique multi-elemental characteristics of Juncus effusus L. The spectral fingerprints of Juncus effusus L. were established based on elemental mic... Laser-induced breakdown spectroscopy (LIBS) was used to decipher the unique multi-elemental characteristics of Juncus effusus L. The spectral fingerprints of Juncus effusus L. were established based on elemental microanalysis via LIBS. Microanalysis and multimode sampling methodologies were designed in this study. The relative standard deviation (RSD) approach was performed to optimize the multi-shot measurements. Taking advantage of the capability with no or minimal sample pre-treatment of LIBS, a thermodynamic chart of four elements (Mg, Ca, Ba, and Na) was created from twelve collection regions. The diagram of elemental distribution on a micro-scale was generated to explore the nature of Juncus effusus L. by LIBS. The results demon- strated that LIBS is a promising technique for rapid elemental microanalysis of heterogeneous samples. 展开更多
关键词 LIBS Juncus effusus L. RSD approach thermodynamic chart elemental microanalysis MICRO-SCALE
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Construction of a BiOI/ZnO heterojunction on biomass Juncus effusus fiber for photodegradation of organic pollutants
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作者 Sijie Zhou Na Zhu +5 位作者 Pei Lyu Chunhua Zhang Zhuan Fu Junyao Gong Zhaozixuan Zhou Liangjun Xia 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2024年第12期28-38,共11页
Semiconductor heterojunction engineering and three-dimensional(3D)architecture con-struction have been considered highly desirable strategies to enhance photocatalytic perfor-mance.Herein,a BiOI/ZnO composite photocat... Semiconductor heterojunction engineering and three-dimensional(3D)architecture con-struction have been considered highly desirable strategies to enhance photocatalytic perfor-mance.Herein,a BiOI/ZnO composite photocatalyst with a 3D flower-like architecture was successfully prepared,whichwas stably immobilized on three-dimensional porous lignocel-lulosic biomass Juncus effusus(JE)fiber.The outstanding photocatalytic performance of the BiOI/ZnO-JE fiber was confirmed by the degradation of tetracycline hydrochloride(TC,90%),ciprofloxacin(CIP,79%),and norfloxacin(NOR,81%).The enhanced photocatalytic activities were mainly attributed to the synergistic absorption performance of the lignocellulosic JE and the effective transfer and separation of charges.Moreover,the hydroxyl(·OH)and super-oxide radicals(·O_(2)^(−))are themain reactive species in the photocatalytic process according to the analysis.This work may provide a novel perspective for constructing high-performance lignocellulosic-based photocatalytic materials. 展开更多
关键词 HETEROJUNCTION BiOI/ZnO Organic pollutants Biomass-based Juncus effusus fiber PHOTODEGRADATION
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Two new phenanthrenoid dimers from Juncus effusus 被引量:2
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作者 Fang Xiao Qiong Li +3 位作者 Chun-Ping Tang Chang-Qiang Ke Yang Ye Sheng Yao 《Chinese Chemical Letters》 SCIE CAS CSCD 2016年第11期1721-1724,共4页
Two new phenanthrenoid dimers, named dijuncuenins A (1) and B (2), were isolated from the ethanolic extract of the whole plant of Juncus effusus. Their structures were determined by 1D and 2D NMR spectroscopic ana... Two new phenanthrenoid dimers, named dijuncuenins A (1) and B (2), were isolated from the ethanolic extract of the whole plant of Juncus effusus. Their structures were determined by 1D and 2D NMR spectroscopic analysis and mass spectrometry. The plausible biosynthetic pathways of compounds 1 and 2 were proposed. 展开更多
关键词 Phenanthrenoid dimers Dijuncuenin A Dijuncuenin BJuncus effusus Biosynthetic pathway
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Study on the Bacteriostatic Effects of 7 Kinds of Chinese Herbal Medicines such as Ophiopogon japonicus and Comb 被引量:4
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作者 王玮 姜海烽 +5 位作者 邬智伟 钱炯 汪小迪 许锦秀 付浩 傅兰英 《Agricultural Science & Technology》 CAS 2016年第11期2560-2563,共4页
[Objective] The aim was to explore the effects of seven kinds of Chinese herbal medicine on Escherichia coil and Staphylococcus aureus in terms of unilater- al bacteriostatic effect, such as root and leaf of Ophiopogo... [Objective] The aim was to explore the effects of seven kinds of Chinese herbal medicine on Escherichia coil and Staphylococcus aureus in terms of unilater- al bacteriostatic effect, such as root and leaf of Ophiopogon japonicus, honeycomb, Panax pseudoginseng, and Allium macrostemon. [Method] Herbal active ingredients were extracted by water boiling method and a bacteriostatic experiment was per- formed by oxford cup diffusion method, to select Chinese herbs with antibacterial effects. MIC values of seven kinds of Chinese herbal medicine were determined by in vitro half-fold dilution method. [Results] Root and leaf of Ophiopogon japonicus, honeycomb, Panax pseudoginseng, Allium macrostemon, Juncus effusus and Xanthi- um sibiricum had bacteriostatic effects on Escherichia coil and Staphylococcus au- reus in varying degrees. Xanthium and leaf of Ophiopogon japonicus performed bet- ter on Escherichia coil, with MIC values at 7.81 and 15.63 mg/ml, respectively. Panax pseudoginseng and Xanthium performed better on Staphylococcus aureus with MIC values at 15.63 and 31.25 mg/ml. And the drug's effect was positively correlated with the concentration. [Conclusion] Xanthium sibiricum is the best bacte- riostatic effect, followed by leaf of Ophiopogon japonicus, and Juncus effusus per- forms the poorest. Panax pseudoginseng showed the best bacteriostatic effect, fol- lowed by Xanthium sibiricum and Juncus effusus performs the poorest. These pro- vide references for clinic safety. 展开更多
关键词 Ophiopogon japonicus HONEYCOMB Panax pseudoginseng Allium macrostemon Juncus effusus Xanthium sibiricum Bacteriostatic effects
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浅议灯心草人工湿地净化水质的作用
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作者 陈军 《内蒙古科技与经济》 2020年第15期82-82,87,共2页
人工湿地是一项新兴的污水净化技术。植物是人工湿地系统中的重要部分,在净化污水中发挥重要作用。文章主要总结了灯心草人工湿地在污水净化中的作用。
关键词 灯心草(Juncus effusus) 人工湿地 净化水质
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Growth,phenology and N-utilization by invasive populations of Gunnera tinctoria 被引量:1
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作者 Maurício Cruz Mantoani Alberto Benavent González +1 位作者 Leopoldo García Sancho Bruce Arthur Osborne 《Journal of Plant Ecology》 SCIE CSCD 2020年第5期589-600,共12页
Aims Gunnera tinctoria is an unusual N-fixing plant species that has become invasive worldwide,generally in environments with a low evaporative demand and/or high rainfall.Amongst the many mechanisms that may explain ... Aims Gunnera tinctoria is an unusual N-fixing plant species that has become invasive worldwide,generally in environments with a low evaporative demand and/or high rainfall.Amongst the many mechanisms that may explain its success as an introduced species,a contrasting phenology could be important but this may depend on an ability to grow and utilize nutrients under sub-optimal conditions.We examined whether G.tinctoria has an advantage in terms of a contrasting phenology and N-fixing capability,in comparisons with Juncus effusus,the native species most impacted by G.tinctoria invasions.Methods We made phenological assessments on a weekly or bi-weekly basis on long-established populations on Achill Island,Ireland,during 2016-2017.Data on leaf and inflorescence number,total leaf area,light interception and above-ground biomass were collected alongside measurements of soil temperature,moisture and oxidation-reduction potential.The significance of N-fixing ability for supporting seasonal growth was assessed usingδ15N isotopic assessments,together with in situ acetylene reduction measurements.Important Findings The timing of the initiation of growth of G.tinctoria and J.effusus varied between 2016 and 2017,with the earlier emergence and expansion of leaves of G.tinctoria,and the largest above-ground biomass associated with higher water availability.The early growth of G.tinctoria was dependent on preformed structures,with maximum canopy development occurring in late May,prior to that of J.effusus.Whilst N-fixation was observed in March,this made a more significant contribution to growth during the later stages of canopy development.Based onδ15N isotopic analyses,early growth was predominantly associated with N-remobilization from the rhizomes,whilst seedlings were largely reliant on N-fixation.This emphasizes the importance of nutrient mobilization for early growth and shows that the importance of an N-fixing capability may vary developmentally,as well as during different stages of the invasion process. 展开更多
关键词 GROWTH invasive species Gunnera tinctoria Juncus effusus nitrogen fixation
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