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Chinese Science Bulletin 2014年第16期59卷 1816-1821页

作者： Ruimin Wang Kuan Chen guanglu ge CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and Technology

In this work,we developed a facile and low-cost method with sufficient sensitivity for the quantitative determination of gold nanoparticles(GNPs)number concentration in water and fetal bovine serum solutions.The Au(III)digested from GNPs was reduced to Au(I)presumably by the thiol group of 2-mercaptobenzimidazole,then the Au(I)–thiolate complex was formed,the concentration of which is determined by absorbance at 300 nm.The number concentration of GNPs can be converted using microscopic images and simple calculations.The interference of serum can be avoided in this method.The limit of detection(LOD)of GNPs was calculated as 2.1 910-12mol/L in water solution and 1.3 9 10-11mol/L in fetal bovine serum(FBS)solution.This method provides a simple and fast way to determine the concentration of GNPs,which can be in carried out in the routine laboratory practice.

关键词：金纳米粒子粒子数浓度胎牛血清水溶液谱方法定量化国民生产总值定量测定

Preparation and ζ-potential characterization of highly dispersible phosphate—functionalized magnetite nanoparticles

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1766-1770页

作者： LI XueYi TANG Yan ge guanglu CAS Key Laboratory of Measurement and Standardization for Nanotechnology National Center for Nanoscience and Technology Beijing 100190 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

By the combination of high-temperature organometallic synthesis and phase transfer through complete ligand-exchange withmixed phosphate, highly water-dispersible Fe3O4nanoparticles with narrow size distribution are obtained, which show appli-cable response to magnetic field. IR and -potential characterization of this system provides insights into ligand structures onparticle surface.

关键词：水分散性磷酸盐表征磁铁矿制备有机合成配体交换粒径分布

Quantitative study of protein coronas on gold nano- particles with different surface modifications

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Nano Research 2014年第3期7卷 345-352页

作者： Menghua Cui Renxiao Liu Zhaoyi Deng guanglu ge Ying Liu Liming Xie CAS Key Laboratory of Standardization and Measurement for Nanotechnology National Center for Nanoscience and TechnologyBeijing 100190 China

Protein coronas provide the biological identity of nanomaterials in vivo. Here we have used dynamic light scattering (DLS) and transmission electron microscopy (TEM) to investigate the adsorption of serum proteins, including bovine serum albumin (BSA), transferrin (TRF) and fibrinogen (FIB), on gold nanoparticles (AuNPs) with different surface modifications (citrate, thioglycolic acid, cysteine, polyethylene glycol (PEG, M w = 2 k and 5 k)). AuNPs with PEG(5 k) surface modification showed no protein adsorption. AuNPs with non-PEG surface modifications showed aggregation with FIB. AuNPs with citrate and thioglycolic acid surface modifications showed 6–8 nm thick BSA and TRF coronas (corresponding to monolayer or bilayer proteins), in which the microscopic dissociation constants of BSA and TRF protein coronas are in the range of 10−8 to 10−6 M.

关键词：金纳米粒子表面修饰蛋白质电晕透射电子显微镜纤维蛋白原牛血清白蛋白柠檬酸盐

Size characteristics and aging of airborne SiO2 nanoparticles

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Size characteristics and aging of airborne SiO2 nanoparticle...

第十二届全国气溶胶会议暨第十三届海峡两岸气溶胶技术研讨...

作者： Youfeng Wang guanglu ge Lan Chen Guolan Tian National Center for Nanoscience and Technology

Exposure to airborne nanoparticles in the occupational setting has been considered as a potential hazard, and has drawn much attention in research. The temporal evolution of airborne nanoparticles and the associated mechanisms need to be understood in order to design better control and protection. In this study, size characteristics and aging of airborne SiO 2 nanoparticles are investigated in a 1.2 m3 chamber under still conditions. The effects of coagulation and surface deposition are quantitatively assessed by measuring particle loss rates and calculating deposition velocity and coagulation coefficient parameters. To simulate workplace environment, the initial SiO 2 nanoparticle concentrations cover the range from 2.16 × 103 cm-3 to 1.79 × 105 cm-3. The results show that the overall loss rates are from 6.97 × 10-5 s-1 to 8.07 ×10-4 s-1. It was revealed that particle loss rates due to coagulation dominate with the fraction over 58%. Finally, it is interesting to find that the evolution of particle size with time is following d /3tefor lognormal-distribution nanoparticles. These findings suggest that the coagulation mechanism may be of more significance in terms of nanoparticles even with lower concentrations in certain workplace environment.

关键词： temporal evolution surface deposition coagulation particle size distribution

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中国纳米标准物质的发展历程

科学通报 2023年第32期68卷 4255-4260页

作者：纪英露葛广路吴晓春国家纳米科学中心北京100190 中国科学院大学纳米科学与技术学院北京100049

纳米技术标准化对纳米科技及纳米产业的健康、可持续发展至关重要.纳米标准物质是纳米技术标准化体系的重要组成部分.本文以三个纳米标准项目为牵引,回顾了中国纳米标准物质从无到有的建制化发展历程.读者可以从中了解到中国纳米标准物... 详细信息

纳米技术标准化对纳米科技及纳米产业的健康、可持续发展至关重要.纳米标准物质是纳米技术标准化体系的重要组成部分.本文以三个纳米标准项目为牵引,回顾了中国纳米标准物质从无到有的建制化发展历程.读者可以从中了解到中国纳米标准物质的发展脉络、战略布局、体系建设及未来发展方向.

关键词：纳米技术纳米标准物质纳米科技纳米产业可持续发展标准化体系建制化战略布局

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晚明关学干城渭南史记事行实考

渭南师范学院学报 2024年第5期39卷 51-62页

作者：魏冬陈戈西北大学关学研究院西安710119 西北大学哲学学院西安710119

史记事,万历乙未进士,先后任山西介休、榆次知县,后升兵部主事、云南道御史,巡按湖广,官至光禄少卿。后因直言敢谏,触忌罢官。归乡后,史记事讲学里中,考订礼乐,设立义仓,倡作堤障,里人德之。史记事与长安冯从吾、凤翔张舜典等关中大儒... 详细信息

史记事,万历乙未进士,先后任山西介休、榆次知县,后升兵部主事、云南道御史,巡按湖广,官至光禄少卿。后因直言敢谏,触忌罢官。归乡后,史记事讲学里中,考订礼乐,设立义仓,倡作堤障,里人德之。史记事与长安冯从吾、凤翔张舜典等关中大儒相知相交,同为东林学人西北之巨擘。其居官关注民生,教养兼举;立朝不畏权贵,刚直敢言;退居教化一方,泽化乡里。故无论人格著述,史记事皆与关学学人品节相符,当为晚明之关学干城。

关键词：史记事《四书疑问》《大成礼乐集》关学

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体相纳米气泡的消除与尺寸调控研究进展

环境工程技术学报 2022年第4期12卷 1310-1316页

作者：张睿毅陈岚葛广路中国科学院纳米标准与检测重点实验室中国科学院纳米科学卓越创新中心国家纳米科学中心中国科学院大学

不同方法发生的体相纳米气泡尺寸与数量浓度相差悬殊。气泡尺寸的多分散性及数量浓度的本征差异性给体相纳米气泡的性能研究及效能比较带来了不便,同时也不利于纳米气泡技术的标准化、产业化。因此,体相纳米气泡尺寸及数量浓度的调控十... 详细信息

不同方法发生的体相纳米气泡尺寸与数量浓度相差悬殊。气泡尺寸的多分散性及数量浓度的本征差异性给体相纳米气泡的性能研究及效能比较带来了不便,同时也不利于纳米气泡技术的标准化、产业化。因此,体相纳米气泡尺寸及数量浓度的调控十分重要。对近年来体相纳米气泡尺寸和数量浓度的调控技术进行了总结及综合评估。主要分析对比了循环均化法、微流控技术和膜技术等尺寸调控方法与冻融去除法、超声消减法等数量浓度调控方法的优劣,从可调控性、设备依赖性、工艺难易度、可拓展性及成本等方面对各方法进行了评估,并结合本课题组已发表研究成果对体相纳米气泡的尺寸和数量浓度调控提出新的认识与思路,以期为深入了解纳米气泡的尺寸效应和超常稳定机制以及体相纳米气泡定量分析与应用,特别是与尺寸相关的性质、效应和应用提供新思考。

关键词：体相纳米气泡发生方法气泡消除尺寸调控尺寸效应

High-efficient Isolation of Plant Viral RNA via TMAOH-modified Fe3O4 Magnetic Nanoparticles

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Chemical Research in Chinese Universities 2014年第1期30卷 23-26页

作者： TANG Yan ZHAO Xiaoli CHU Linya SUN Ning LIU Renxiao DENG Congliang ge guanglu Key Laboratory of Measurement and Standardization for Nanotechnology of Chinese Academy of Sciences National Center for Nanoscience and Technology Beijing 100190 P. R. China Beijing Entry-exit Inspection and Quarantine Bureau Beijing 100026 P. R. China University of Chinese Academy of Sciences Beijing 100049 P. R. China School of Materials Science and Engineering Shandong University Jinan 250100 P. R. China

Magnetic nanoparticles show great potential in RNA enrichment and separation for rapid detection of viral infection.Fundamental studies on the interaction between RNA and nanoparticles with uniform size and surface property are necessary for designing better adsorbent and optimizing the conditions.In this study,monodispersed superparamagnetic magnetite（Fe3O4） nanoparticles were synthesized by thermal decomposition and modified with tetramethylammonium hydroxide[N（CH3）4OH,TMAOH] that become highly dispersible and stable in water.High-efficiency plant viral RNA adsorption onto TMAOH/Fe3O4 nanoparticles in the extracted solution of plant leaves was demonstrated.The changes of surface charge of TMAOH on the Fe3O4 nanoparticles with pH contribute to the RNA adsorption and elution.Separating viral RNA with magnetic nanoparticles could be a simple,quick andhighly efficient method.

关键词： Magnetic nanoparticle Fe3O4 Tetramethylammonium hydroxide（TMAOH） RNA adsorption

Growth of alumina oxide nanowires in an aluminum anodization process

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Chinese Science Bulletin 2011年第18期56卷 1947-1950页

作者： ZHU KaiGui CHENG JingRan CHANG MingChao WANG Wu WEI WenBo ge guanglu Department of Physics Beihang University Beijing 100191 China Laboratory of Nanostanderization National Center for Nanoscience and Technology Beijing 100190 China

Alumina oxide nanowires were grown via a two-step anodization of aluminum foil. A growth mechanism is proposed for these nanowires which is different from that of those formed using chemical etching methods. An electric field and stress are necessary to grow these nanowires, and the nano-imprinted metal surface of the aluminum foil has an important role.

关键词：氧化铝纳米线氧化过程生长铝阳极阳极氧化化学蚀刻金属表面铝箔

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纳米技术标准化的挑战、动态与展望

科学通报 2018年第35期63卷 3697-3705页

作者：张东慧葛广路国家纳米科学中心中国科学院纳米科学卓越创新中心中国科学院纳米标准与检测重点实验室北京100190

技术标准为科技成果进入市场、形成产业提供支撑和保障.对于正从实验室走向产业应用的纳米科技来说,在名词术语、测量表征、环境健康安全和材料规格等方面对基础通用标准有紧迫的需求,而这就依赖于纳米检测方法验证、不确定度评估、标... 详细信息

技术标准为科技成果进入市场、形成产业提供支撑和保障.对于正从实验室走向产业应用的纳米科技来说,在名词术语、测量表征、环境健康安全和材料规格等方面对基础通用标准有紧迫的需求,而这就依赖于纳米检测方法验证、不确定度评估、标准样品研制等研究的不断深入,和学术界、产业界、监管机构的密切合作.本文综述了纳米技术标准化动态,包括战略制定、组织机构、发布与在研标准、面临的主要挑战等,并结合我国纳米技术发展现状,分析存在的主要问题并提出可能的应对策略,加强顶层设计和宣贯力度、引入创新方法、提升企业参与,使制定的标准切实助力我国纳米产业测试水平和质量提升.

关键词：纳米技术标准化国际标准化组织