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01:26Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation
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.
01:22Atomic Emission Spectroscopy: Instrumentation
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.
01:25IR Spectrometers
There are two main infrared (IR) spectrophotometers: dispersive IR spectrometers and Fourier transform infrared (FTIR) spectrometers. In a dispersive IR spectrometer, a beam of infrared radiation produced by a hot wire is divided into two parallel equal-intensity beams using mirrors. One beam passes through the sample, while another is a reference beam. The beams then move through the monochromator, which separates the radiations into a continuous spectrum of different frequencies. The...
01:30Atomic Emission Spectroscopy: Interference
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,...
02:39Emission Spectra
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
01:29Atomic Emission Spectroscopy: Lab
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...
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Related Experiment Video
Updated: Jun 16, 2026
12:14
The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
High dispersion stellar spectroscopy with an echelle grating.
Applied Optics
|January 23, 2010
Summary
A new 3.7-meter echelle spectrograph was developed and tested. It demonstrated effective performance using both photographic and photoelectric detection methods.
Area of Science:
- Astronomy and Astrophysics
- Optical Instrumentation
Background:
- Echelle spectrographs are crucial for high-resolution astronomical spectroscopy.
- Advancements in detector technology necessitate the development of new instruments.
Purpose of the Study:
- To detail the design and operational principles of a novel 3.7-meter echelle spectrograph.
- To evaluate the instrument's performance using diverse detection techniques.
Main Methods:
- Construction and calibration of a 3.7-meter echelle spectrograph.
- Acquisition of observational data using photographic plates with image intensifier tubes.
- Collection of data via photoelectric detectors.
- Comparative analysis of data quality and performance metrics.
Main Results:
- Successful implementation of a 3.7-meter echelle spectrograph.
- Presentation of results obtained from both photographic and photoelectric observations.
- Quantitative and qualitative assessment of the spectrograph's capabilities.
Conclusions:
- The new echelle spectrograph is a functional and valuable tool for astronomical research.
- Both photographic and photoelectric methods yield viable results, offering flexibility in data acquisition.
- The instrument's performance meets the requirements for detailed spectroscopic analysis.