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[Study on enhancing effect of ethanol in lower power ICP]
Ren-xuan Xin1, Jian-chen Wang, Chong-li Song
1Institute of Nuclear Energy Technology, Tsinghua University, Beijing 100084, China.
Guang Pu Xue Yu Guang Pu Fen Xi = Guang Pu
|August 14, 2003
Summary
Adding ethanol to sample solutions lowers plasma temperatures and increases aerosol velocity in inductively coupled plasma (ICP) analysis. This improves detection limits for rare earth elements, offering enhanced elemental analysis capabilities.
Area of Science:
- Analytical Chemistry
- Atomic Spectroscopy
- Plasma Physics
Context:
- Inductively Coupled Plasma (ICP) is a widely used atomic emission spectroscopy technique.
- Ethanol is often used as a solvent or co-solvent in sample preparation for ICP analysis.
- Understanding solvent effects on plasma properties is crucial for optimizing analytical methods.
Purpose:
- To investigate the impact of ethanol on the physical properties of sample solutions.
- To determine the effects of ethanol on plasma characteristics, including temperature and electron density in ICP.
- To evaluate the influence of ethanol on the detection limits of various elements.
Summary:
- Ethanol addition to aqueous solutions altered physical properties like density and viscosity.
- ICP analysis revealed decreased gas temperature, excitation temperature, and electron number density with ethanol.
- Aerosol transport velocity to the plasma increased, leading to lower detection limits for rare earth elements.
Impact:
- Provides insights into the fundamental interactions between ethanol and ICP plasmas.
- Offers a basis for optimizing ICP-based elemental analysis methods using ethanol-water mixtures.
- Demonstrates a strategy for enhancing the detection sensitivity of specific elements, particularly rare earths.