Background and matrix effects are corrected in the peak intensities and the results are then normalized to 100% according to the identified elements. ... In other cases, the sample matrix may absorb ...

Yueh-Yun Chi, Deborah H. Glueck, Keith E. Muller, Power and Sample Size for Fixed-Effects Inference in Reversible Linear Mixed Models, The American Statistician, Vol. 73, No. 4 (November 2019), pp.