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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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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).
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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.
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Photoelectron spectroscopy from a liquid flatjet.

Dominik Stemer1, Tillmann Buttersack1, Henrik Haak1

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We developed a novel flatjet method using two impinging liquid jets for advanced photoelectron spectroscopy. This technique enables unique liquid-phase experiments and surface-sensitive analysis of different solutions.

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Area of Science:

  • Physical Chemistry
  • Surface Science
  • Spectroscopy

Background:

  • Liquid-jet photoelectron spectroscopy offers surface-sensitive analysis of liquid interfaces.
  • Conventional single cylindrical liquid jets limit experimental configurations and detection capabilities.

Purpose of the Study:

  • To demonstrate a novel flatjet technique for liquid-phase photoelectron spectroscopy.
  • To explore the capabilities of flatjets for creating unique liquid interfaces and applying potential gradients.

Main Methods:

  • Formation of a flatjet by impinging two micron-sized cylindrical jets of different aqueous solutions.
  • Utilizing photoelectron spectroscopy for face-sensitive detection of the co-flowing liquid-jet sheets.
  • Applying different bias potentials to the impinging jets to create a potential gradient.

Main Results:

  • Successfully generated and analyzed a flatjet composed of sodium iodide solution and water.
  • Demonstrated the capability to create a potential gradient across the flatjet interface.
  • Presented the first photoemission spectra from a sandwich-type flatjet (water encapsulated by toluene).

Conclusions:

  • Flatjets provide a flexible platform for advanced liquid-phase experiments not feasible with single jets.
  • The technique allows for unique surface-sensitive detection and control over interfacial properties.
  • This method opens new avenues for studying complex liquid interfaces using photoelectron spectroscopy.