3D打印的微塑光学发射光谱与基于ZIF-8的分散型固相提取相结合,用于水中的现场分析
Jiahui Yang1, Yao Lin2, Xi Wang3
1Analytical & Testing Center, Sichuan University, Chengdu, Sichuan, 610064, China.
Analytica chimica acta
|November 3, 2024
概括
一个新的3D打印的光谱仪提供了水中的灵敏和可靠的检测. 这一进步为污染的现场分析提供了具有成本效益的解决方案.
科学领域:
- 分析化学 分析化学
- 环境科学 环境科学
- 频谱学是一种光谱学.
背景情况:
- 饮用水中的污染是一个全球性的健康问题,特别是在南亚.
- 与先进的方法相比,传统的实地测试套件缺乏准确性和特异性.
- 微型微等离子体原子光谱学显示出有希望的结果,但在成本,一致性和分析性能方面面临挑战.
研究的目的:
- 开发一个具有成本效益,高灵敏度和特定元素的现场仪器来检测.
- 提高微型光谱仪的制造一致性和分析性能.
- 提供一种可靠的工具,用于评估各种环境样本中的水中含量.
主要方法:
- 使用3D打印制造一个小型,电池驱动的化物发电点放电光学发射光谱仪 (HG-μPD-OES).
- 将HG-μPD-OES与分散型固相提取 (d-SPE) 结合起来,使用化伊米达酸框架-8.
- 使用经认证的参考材料和现实世界的河流和湖泊水样本进行验证.
主要成果:
- 达到了的0.07μg L-1的检测极限 (LOD).
- 对于的确定,获得的相对标准偏差 (RSD) 优于3.8%.
- 证明了简化样品处理和减少过渡金属离子的干扰.
结论:
- 3D打印显著降低了制造成本,并提高了HG-μPD-OES的制造一致性.
- 与传统的HG-μPD-OES相比,开发的方法可以提高LOD的27倍.
- 该系统提供了可靠,灵敏和方便的解决方案,用于水中的现场分析,低至0.2μg L-1.1.
相关概念视频
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
533
Inductively coupled plasma (ICP) is the most widely used plasma source in atomic emission spectroscopy (AES), also known as Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES). The ICP source, or torch, consists of three concentric quartz tubes with argon gas flowing through them. A spark from a Tesla coil initiates the ionization of argon, generating a high-temperature plasma.
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
The ions and electrons produced interact with the fluctuating magnetic field created by a water-cooled...
533
01:29Atomic Emission Spectroscopy: Lab
149
AES is a powerful analytical technique, especially effective when used with plasma sources, producing abundant spectra in characteristic emission lines. The Inductively Coupled Plasma (ICP), in particular, yields superior quantitative analytical data due to its high stability, low noise, low background, and minimal interferences under optimal experimental conditions. However, newer air-operated microwave sources are emerging as promising alternatives that could be more cost-effective than...
149
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
194
Inductively coupled plasma (ICP) is the common plasma source used in atomic emission spectroscopy (AES), a technique that detects and analyzes various elements in a sample. This method is often called inductively coupled plasma atomic emission spectroscopy (ICP-AES).
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
There are three main types of inductively coupled plasma atomic emission spectroscopy (ICP-AES) instruments: sequential, simultaneous multichannel, and Fourier transform instruments, with the latter being less commonly used....
194
01:22Atomic Emission Spectroscopy: Instrumentation
343
The instrumentation of atomic emission spectrometry (AES) involves various components, including atomization devices that convert samples into gas-phase atoms and ions. There are two main types of atomization devices: continuous and discrete atomizers. Continuous atomizers, like plasmas and flames, introduce samples in a constant stream, while discrete atomizers inject individual samples using syringes or autosamplers. The most common discrete atomizer is the electrothermal atomizer.
343
01:20Atomic Emission Spectroscopy: Overview
1.6K
Atomic emission spectroscopy (AES) is an analytical technique used to determine the elemental composition of a sample by analyzing the light emitted from excited atoms. In AES, atoms in a sample are excited to higher energy levels by thermal energy from high-temperature sources, such as plasma, arcs, or sparks. When these excited atoms return to lower energy states, they emit light at specific wavelengths characteristic of each element. The resulting atomic emission spectrum, which consists of...
1.6K
01:30Atomic Emission Spectroscopy: Interference
174
In atomic emission spectroscopy (AES), high-temperature atomizers excite a broad range of elements and molecules that generate complex emissions from sources such as oxides, hydroxides, and flame combustion products in the flame or plasma. Several strategies can be employed to minimize spectral interferences caused by overlapping emission lines or bands. These include increasing instrument resolution, choosing alternative emission lines, optimally placing the detector in low-background regions,...
174