THGA Graphite Furnace AA – Automatic Matrix Modification for Improved Analytical Quality and Sample Throughput

The matrix modification technique is a very important feature in the concept of interference-free trace metal determinations. Applying this technique, the chemical forms, and thereby the physical properties, of the element under study and/or the matrix, can be changed by adding a suitable reagent in excess to the sample and standard reference solutions. This note provides detailed information on how to prepare the most common matrix modification solutions.