Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Ion Exchange01:17

Ion Exchange

588
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
588
Extraction: Advanced Methods00:56

Extraction: Advanced Methods

446
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
446
Gravimetry: Inorganic And Organic Precipitating Agents00:49

Gravimetry: Inorganic And Organic Precipitating Agents

1.3K
In gravimetry, the precipitant is chosen carefully to obtain a pure solid that can be easily filtered. Common inorganic precipitants can be used to determine several cations and anions. In some cases, the formation of the same precipitate can be used to determine the cation and the anion. For example, the reaction of barium and chromate ions to give barium chromate is used to determine both barium and chromate. However, precipitates such as hydroxides, oxalates, and metal ammonium phosphates...
1.3K
Masking and Demasking Agents01:19

Masking and Demasking Agents

2.4K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.4K
EDTA: Auxiliary Complexing Reagents01:26

EDTA: Auxiliary Complexing Reagents

580
EDTA titrations are usually carried out in highly basic conditions, where the fully deprotonated form of EDTA, Y4−, actively complexes with the free metal ions in the solution. Several metal ions precipitate as hydrous oxide (hydroxides, oxides, or oxyhydroxides) under these conditions, lowering the concentration of free metal ions in the solution. For this reason, auxiliary complexing agents or ligands such as ammonia, tartrate, citrate, or triethanolamine are used in EDTA titrations to...
580
Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

431
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
431

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

A One-Dimensional Thorium-Containing Arsenotungstate for the Synthesis of 2,3-Dihydroquinazolinones.

Inorganic chemistry·2026
Same author

Multi-omics insights into the woolly trait of Saussurea medusa and the plant's coordinated regulation of flavonoid biosynthesis.

Communications biology·2026
Same author

Metformin attenuates diabetic osteoporosis via the miR-21 mediated Mef2c/Sost pathway.

Frontiers in endocrinology·2026
Same author

Identifying the regulatory network of the key lipid metabolism transcription factor peroxisome proliferator-activated receptor in oysters.

International journal of biological macromolecules·2026
Same author

A novel score to predict successful endovascular recanalization of non-acute carotid artery occlusion.

Journal of neurointerventional surgery·2026
Same author

Aquaporin-1 (AQP1) mediates cardiac oedema and mitochondrial dysfunction in cardiometabolic HFpEF: New insights into the mechanisms of SGLT2 inhibitors.

Biochemical pharmacology·2026

相关实验视频

Updated: Jun 26, 2025

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
09:23

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Published on: June 21, 2015

9.8K

作为乌兰去除的高效离子交换器的开放框架Vanadate.

Cheng Meng1,2, Mingyang Du1, Zhibin Zhang1

  • 1State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, Jiangxi 330013, P. R. China.

Environmental science & technology
|May 15, 2024
PubMed
概括

一种新的分层酸盐,Me2NH2V3O7,有效地从复杂的放射性废水中去除 (UO2^2+). 这种材料表现出高效率,快速动力学和出色的选择性,使其成为环境修复的有希望的解决方案.

关键词:
波恩-奥本海默分子动力学密度函数理论密度函数理论离子交换离子交换离子交换一个开放框架的复合体.乌兰尼兰是什么意思乌兰尼兰是什么意思

更多相关视频

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
07:28

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Published on: July 13, 2018

7.4K
U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen
12:05

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

Published on: February 21, 2019

8.0K

相关实验视频

Last Updated: Jun 26, 2025

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability
09:23

Removal of Trace Elements by Cupric Oxide Nanoparticles from Uranium In Situ Recovery Bleed Water and Its Effect on Cell Viability

Published on: June 21, 2015

9.8K
An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter
07:28

An Efficient Method for Selective Desalination of Radioactive Iodine Anions by Using Gold Nanoparticles-Embedded Membrane Filter

Published on: July 13, 2018

7.4K
U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen
12:05

U2O5 Film Preparation via UO2 Deposition by Direct Current Sputtering and Successive Oxidation and Reduction with Atomic Oxygen and Atomic Hydrogen

Published on: February 21, 2019

8.0K

科学领域:

  • 材料科学 材料科学 材料科学
  • 环境化学环境化学
  • 核工程 核工程是指核工程.

背景情况:

  • 放射性废水的安全管理对于环境修复至关重要.
  • 水中的污染对环境和健康构成重大风险.
  • 开发高效的材料去除是一个持续的挑战.

研究的目的:

  • 引入一种新的分层瓦纳酸盐,[Me2NH2]V3O7,作为一种有效的离子交换器,用于化 (UO2^2+) 的去除.
  • 评估[Me2NH2]V3O7在复杂水溶液和各种pH条件下的性能.
  • 研究离子交换机制和材料对环境修复的潜力.

主要方法:

  • 分层瓦纳酸盐[Me2NH2]V3O7.7的合成和表征
  • 离子交换实验用于评估的去除能力,动力学,效率和选择性.
  • 密度功能理论 (DFT) 和波恩-奥本海默分子动力学 (BOMD) 计算以阐明离子交换机制.

主要成果:

  • [Me2NH2]V3O7具有较高的离子交换能力 (176.19 mg/g) 和快速的动力学 (15分钟) 来去除乌兰.
  • 该材料在广泛的pH范围 (2.00-7.12) 中实现了高的去除效率 (>99%) 并对干扰离子如Cs+和Sr2+表现出色的选择性.
  • 剩余的度降至13ppb,低于EPA限制,并实现了U/Cs和U/Sr的记录分离因子.

结论:

  • [Me2NH2]V3O7是一种高度稳定和高效的离子交换器,用于从复杂的放射性废水中捕获乌兰.
  • 该材料的性能,包括它去除低度的能力,并将其与其他放射性核素分离,使其对环境修复有希望.
  • 计算研究为离子交换过程提供了机械的洞察力,指导了未来离子交换机的设计.