ICP AES with radial view, and with dual radial/axial view

ICP techniques (Inductively Coupled Plasma) allows the quantitative analysis of almost 70 elements of the periodic table.


© L. Ayouni, ISA-UMR 5280

tableau périodique des éléments

After its digestion, the sample is drawn up by a peristaltic pump and introduced into a nebulizer where the addition of argon allows the formation of an aerosol. The passage in a spray chamber allows to pass only the finer droplets that are injected into the torch.

Plasma, consisting of ionized argon, is formed in the torch by a radio frequency field, the temperature reaches 10 000 ° C. There, the sample is de-solvated, atomized and ionized. The excited ions de-excite by emitting wavelength photons characteristic of the elements and whose intensity is proportional to the amount present.

In the case of the ICP AES, the detector is an optical device consisting of prisms and networks which allows sorting of the emitted wavelengths. A camera allows counting intensity.

In the case of the radial view, the plasma is perpendicular to the detector input which allows analysis of more charged solutions. For the axial view, the configuration is horizontal which increases the sensitivity of the technique (up to µg / L).


Last generation microwave oven

The solution step is critical and delicate for inorganic elemental analysis. Energy input is usually necessary and the proper use of mineralization reagents..

Closed systems such as microwaves allow an under pressure rise of temperature giving more efficiency to the dissolving.

The Ultra Wave microwave oven has a unique technology SRC (Single Reaction Chamber). The samples are placed simultaneously in a pressure chamber in the same conditions thereby to dissolve the different matrices in one cycle.