Background

In the 1970s, the United States created the Clean Air Act, setting standards to regulate emissions of pollutants that "endanger public health and welfare" with oversight by the U.S. Environmental Protection Agency (EPA). In the late 1990s, the EPA issued method IO-3.3 detailing the sensitivity required by EDXRF analyzers for measuring the elemental composition of air filters. To meet these testing requirements, Rigaku offers NEX CG II+, a 100 W indirect excitation EDXRF system using secondary targets and polarization in full 90° Cartesian Geometry for superior sensitivity and analysis of elemental particulate matter on air filters.

Scope

The analysis of air filters in compliance with instrument sensitivity as outlined by  U.S. EPA method IO-3.3 (1999) is demonstrated using NEX CG II+ EDXRF analyzer.