ICP-AES – Inductively Coupled Plasma-Atomic Emission Spectroscopy
The atomic emission spectroscopy (or optical emission spectroscopy – OES) with an inductively coupled plasma is an analytical method for the qualitative and, after calibration, quantitative detection of metals and some nonmetals (e.g. iodine, phosphorus or sulfur). After nebulization, the digestion solution to be analyzed is transported into an argon plasma. The temperatures in the plasma ranges from 6,000 to 12,000 K, causing a vaporization of the aerosol and an ionization of the contained atoms. The wavelengths of the emitted light are element-specific and are detected after spectral decomposition in a polychromator by using CID-technology.
The method covers large spectral ranges and enables an analysis of approx. 70 elements. The quantification of the elements is possible over several decades of ten. The typical application range is the µg/ml and µg/L-range.