Related Experiment Video
Updated: Apr 19, 2026
08:06
Merging Ion Concentration Polarization between Juxtaposed Ion Exchange Membranes to Block the Propagation of the Polarization Zone
Published on: February 23, 2017
9.0K
Development of dielectric-barrier-discharge ionization
Cheng'an Guo1, Fei Tang, Jin Chen
1State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, 100084, China.
Analytical and Bioanalytical Chemistry
|December 17, 2014
Summary
Dielectric-barrier-discharge ionization offers a versatile, low-energy, solvent-free method for ambient ionization. This review covers its instrumentation, applications in fields like biological analysis and forensics, and future potential.
Area of Science:
- Analytical Chemistry
- Physical Chemistry
- Mass Spectrometry
Background:
- Dielectric-barrier-discharge ionization is an ambient ionization technique introduced in 2007.
- It has gained significant attention due to its advantages such as low energy consumption, solvent-free operation, and ease of miniaturization.
Purpose of the Study:
- To provide a comprehensive review of dielectric-barrier-discharge ionization.
- To detail its instrumentation, applications, and mechanistic studies.
- To discuss potential future uses of this ionization source.
Main Methods:
- Review of existing literature on dielectric-barrier-discharge ionization.
- Summarization of instrumentation and mechanistic studies.
- Analysis of diverse applications across various scientific fields.
Main Results:
- Dielectric-barrier-discharge ionization is effective in biological analysis, food safety, mass-spectrometry imaging, forensic identification, and reaction monitoring.
- The technique's advantages make it suitable for a wide range of analytical challenges.
- Mechanistic insights and instrumentation advancements are crucial for its continued development.
Conclusions:
- Dielectric-barrier-discharge ionization is a promising ambient ionization technique with broad applicability.
- Further research into its mechanisms and instrumentation will expand its utility.
- The technique holds significant potential for future innovations in analytical science.
Related Concept Videos
01:31Dielectric Polarization in a Capacitor
6.7K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
6.7K
01:27Electrostatic Boundary Conditions in Dielectrics
2.1K
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity....
2.1K
01:30The Electrical Double Layer
210
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
210
01:29Potential Due to a Polarized Object
943
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
943
01:18Capacitor With A Dielectric
5.6K
Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
Dielectrics are non-conducting materials with no free or loosely bound electrons. When a dielectric is...
5.6K
01:19Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle
2.4K
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...
2.4K