Related Experiment Video
Updated: May 20, 2025
09:40
Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
14.1K
Microwave induced breakdown spectroscopy: Insights into plasma dynamics and spectrum analysis
Seher Saleem1, Muhammad Rizwan1, Zongyu Hou2
1State Key Lab of Power Systems, International Joint Laboratory on Low Carbon Clean Energy Innovation, Department of Energy and Power Engineering, Tsinghua University, Beijing, 100084, China.
Talanta
|May 17, 2025
Summary
Antenna-based Microwave-Induced Breakdown Spectroscopy (MIBS) offers efficient elemental analysis by generating plasma directly on solid samples. This cost-effective method simplifies sample preparation and analysis, providing high emission intensity and sustained plasma signals.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Plasma Physics
Background:
- Microwave-Induced Breakdown Spectroscopy (MIBS) is an emerging technique for elemental analysis.
- Traditional methods often require extensive sample preparation and complex setups.
- Antenna-based MIBS simplifies the process by generating plasma directly on the sample surface.
Purpose of the Study:
- To investigate the dynamic characteristics of microwave-induced plasma (MIP) generated by antenna-based MIBS.
- To analyze the evolution of emission intensity and plasma lifetime across different materials.
- To determine the impact of microwave power, pulse duration, and repetition rate on plasma properties and signal output.
Main Methods:
- Utilized spectroscopic and image analysis techniques to study MIP.
- Conducted temporal studies of spectral signals on aluminum, iron, and ceramic samples.
- Investigated the effects of varying microwave power, pulse durations, and repetition rates on an aluminum sample.
Main Results:
- Antenna-based MIBS generates high-intensity plasma on sample surfaces.
- Plasma emission and lifetime are sustained by microwave pulses, peaking at the pulse's end.
- Ceramics showed longer plasma lifetimes (up to 1200 μs) compared to aluminum and iron (decay beyond 1000 μs).
- Increased microwave power enhanced signal intensity, plasma temperature, and electron density in aluminum.
- Optimized pulse duration and repetition rate improve signal intensity and stability.
Conclusions:
- Antenna-based MIBS is a cost-effective and efficient alternative for elemental composition analysis.
- The technique eliminates the need for high gas flow rates and complex sample preparation.
- Direct microwave plasma generation offers advantages over other spectroscopic methods.
Related Concept Videos
01:29Atomic Emission Spectroscopy: Lab
133
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...
133
01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
166
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....
166
01:20Atomic Emission Spectroscopy: Overview
791
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...
791
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
451
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...
451
01:22Atomic Emission Spectroscopy: Instrumentation
302
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.
302
01:19Inductively Coupled Plasma–Mass Spectrometry (ICP–MS): Overview
602
In inductively coupled plasma–mass spectrometry (ICP–MS), an inductively coupled plasma (ICP) torch is used as an atomizer and ionizer. Solid samples are dissolved and volatilized before being introduced into the high-temperature argon plasma, while solution samples are nebulized and passed through the high-temperature argon plasma. Plasma dissociates the analytes and ionizes their component atoms to form a mixture of positive ions and molecular species. The positive ions are then...
602