INDUCTIVELY COUPLE PLASMA OPTICAL EMISSION ESPECTROSCOPY Research Technical Services

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Research Technical Services

INDUCTIVELY COUPLE PLASMA OPTICAL EMISSION ESPECTROSCOPY

In the Inductively coupled plasma optical emission spectroscopy (ICP-OES), a large amount of elements of the periodic table can be quantified at trace and ultratrace concentration levels.

The liquid sample is transported through the tubing connections with a peristaltic pump. When the liquid reaches the nebulizer system it becomes an aerosol thanks to the action of gas argon. The aerosol is conducted to ionization zone that consists in a plasma generated when subjecting a flow of gas argon to the action of an oscillating magnetic field induced by a current of high frequency. Inside the plasma temperature reaches to 8000ºK. Inside the plasma, atoms of the sample are excited and ionized. When this excited atoms decay back to its ground state an electromagnetic radiation is emitted . This emission is the analyzed by an optical system separating the radiation by its wavelength. Then the detector quantifies the intensity giving the concentration of each element o f the sample.

 

Applications

An ICP-OES device can detect and quantify the majority of the elements of the periodic table, being able to analyze a wide range of samples.

 

Equipment

Optima 4300DV and Optima 7300DV introduce axial vision that provides better limits of detection by increasing optical path. The radial vision together with the axial vision (Dual vision) extends the linear dynamic range.

Accesories and gases


Both  instruments have autosampler for the introduction of the liquid samples.
An ultrasonic nebulizer (Cetac model Or5000AT+), is available to improve the limits of detection. It has the possibility to be conected to any of the instruments.

Both instruments use argon, nitrogen and compressed air

 

 

Sample requirements