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Related Concept Videos

Inductively Coupled Plasma Atomic Emission Spectroscopy: Instrumentation01:26

Inductively 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.
Atomic Emission Spectroscopy: Overview01:20

Atomic Emission Spectroscopy: Overview

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...
Atomic Emission Spectroscopy: Lab01:29

Atomic 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...
Atomic Absorption Spectroscopy: Instrumentation01:22

Atomic Absorption Spectroscopy: Instrumentation

An atomic absorption spectrophotometer (AAS) comprises several components: a radiation source, an atomizer, a monochromator, and a detector. The radiation source can be a hollow-cathode lamp (HCL) or an electrodeless-discharge lamp (EDL), both of which provide a narrow emission line of the required wavelength. However, some instruments use continuum sources and high-resolution monochromators to achieve a narrow range of radiation.
The atomizer used in AAS can be either a flame atomizer or an...
Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle01:19

Inductively Coupled Plasma Atomic Emission Spectroscopy: Principle

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...
Atomic Absorption Spectroscopy: Overview01:27

Atomic Absorption Spectroscopy: Overview

Atomic absorption spectroscopy (AAS) is a technique used to analyze elements by measuring electromagnetic radiation (EMR) absorbed by atoms, which causes them to transition to a higher-energy orbit. The most crucial step in AAS is atomization, where the analyte is converted into gas-phase atoms, typically through a flame or furnace. Some of these atoms become thermally excited in the flame, while most remain in the ground state.
When irradiated by EMR of a particular wavelength, these...

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Related Experiment Video

Updated: Jul 9, 2026

Three-dimensional Optical-resolution Photoacoustic Microscopy
08:31

Three-dimensional Optical-resolution Photoacoustic Microscopy

Published on: May 3, 2011

Quartz-enhanced photoacoustic spectroscopy.

A A Kosterev, Yu A Bakhirkin, R F Curl

    Optics Letters
    |November 23, 2007
    PubMed
    Summary

    Researchers developed a novel method for detecting weak photoacoustic signals in gases. This technique uses a high-Q crystal to accumulate sound energy, improving sensitivity for gas analysis.

    Area of Science:

    • Optoacoustics
    • Acoustic Spectroscopy
    • Materials Science

    Background:

    • Photoacoustic spectroscopy (PAS) is a sensitive technique for detecting trace gases.
    • Traditional PAS often uses gas-filled resonant cavities to enhance signal detection.
    • Limitations exist in the sensitivity and design of conventional PAS systems.

    Purpose of the Study:

    • To introduce a new method for detecting weak photoacoustic signals in gas media.
    • To explore the use of a high-Q crystal element for sound energy accumulation.
    • To demonstrate the feasibility and sensitivity of this novel approach.

    Main Methods:

    • A novel photoacoustic detection system was designed.
    • Sound energy was accumulated in a high-Q crystal element instead of a gas-filled cavity.

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    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

    Published on: January 15, 2013

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    Last Updated: Jul 9, 2026

    Three-dimensional Optical-resolution Photoacoustic Microscopy
    08:31

    Three-dimensional Optical-resolution Photoacoustic Microscopy

    Published on: May 3, 2011

    Photoacoustic Cystography
    09:49

    Photoacoustic Cystography

    Published on: June 11, 2013

    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography
    11:21

    Integrated Photoacoustic Ophthalmoscopy and Spectral-domain Optical Coherence Tomography

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  • Feasibility was tested using a quartz-watch tuning fork as the crystal element.

    • Main Results:

    • The developed technique demonstrated a high sensitivity of 1.2x10(-7) cm(-1) W/ radicalHz.
    • This sensitivity was achieved by accumulating acoustic energy in the crystal resonator.
    • The results validate the potential of crystal resonators for photoacoustic signal enhancement.

    Conclusions:

    • The use of high-Q crystal elements offers a promising alternative for detecting weak photoacoustic signals in gases.
    • This approach enhances sensitivity compared to traditional methods.
    • Further developments could expand applications in gas sensing and analysis.