相关实验视频

Updated: Jul 14, 2025

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Preparation of Monodomain Liquid Crystal Elastomers and Liquid Crystal Elastomer Nanocomposites

Published on: February 6, 2016

通过环氧基团合成,表征和应用交联功能性聚合物作为从水和食品中提取的吸附剂:多变量优化

Ersen Yılmaz¹, Ali Boztuğ², Hameed Ul Haq³

¹Munzur University, Dept. Machinery Programme, Tunceli, Türkiye.

|October 9, 2023

概括

一种新型的马氏无水化物-styrene-glycidyl methacrylate (MA-St-GMA) 聚合物被开发为离子 (Cd(II)) 丰富的选择性吸附剂. 这种轨道振动器辅助固体相微提取 (OS-SPME) 方法提供了高吸附能力和在各种样品中精确的检测.

科学领域:

分析化学分析化学
材料科学材料科学材料科学

背景情况:

(Cd(II)) 是一种有毒的重金属污染物,在水和食品样本中发现.
准确和敏感的检测方法对于监测Cd (II) 水平至关重要.

研究的目的:

为了合成和表征一种用于选择性Cd(II) 离子丰富的新型聚合物 (MA-St-GMA).
开发和优化一个轨道振动器辅助固体相微提取 (OS-SPME) 方法用于Cd (II) 确定.
验证开发的OS-SPME方法在现实世界水和食品样本中分析Cd.

主要方法:

合成和表征一个基无水化-styrene-glycidyl甲基酸盐 (MA-St-GMA) 聚合物.
使用中央复合设计 (CCD) 优化实验变量.
使用火焰原子吸收光谱法 (FAAS) 与OS-SPME结合确定Cd.

主要成果:

这种MA-St-GMA吸收剂对Cd (II) (195.9毫克g-1) 具有很高的吸附能力.
开发的OS-SPME-FAAS方法实现了0.1-130 ng mL-1的线性范围和0.03 ng mL-1.1的检测极限.
该方法在现实世界样本中表现出色,相对标准偏差低 (1.7-2.2%) 和恢复率高 (95.5-98.5%).

结论:

该MA-St-GMA聚合物是一种有效和选择性的吸收剂,用于Cd (II) 丰富.
开发的OS-SPME-FAAS方法是稳固的,准确的,适合在不同的矩阵中进行常规分析Cd.
这项研究对现有的Cd (II) 确定方法进行了显著改进.

关键词:

吸附剂吸附剂是一种吸附剂.环境污染环境污染食品分析食品分析功能性材料是一种功能性材料.重金属是一种重金属.水环境监测水环境监测

更多相关视频

Deposition of Porous Sorbents on Fabric Supports

Deposition of Porous Sorbents on Fabric Supports

Published on: June 12, 2018

Synthesis of Ligand-free CdS Nanoparticles within a Sulfur Copolymer Matrix

Synthesis of Ligand-free CdS Nanoparticles within a Sulfur Copolymer Matrix

Published on: May 1, 2016

相关概念视频

Ion Exchange

Ion Exchange

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...

Extraction: Advanced Methods

Extraction: Advanced Methods

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...

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)

Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...