H. Borner et al., ON MATRIX EFFECTS IN HF-PLASMA-SNMS ANALYSIS OF SINTERED CERAMIC TI-AL-(SI)-O, Fresenius' journal of analytical chemistry, 361(6-7), 1998, pp. 590-591
For a series of electrically non-conductive, sintered ceramic samples
with the nominal composition Si-0.05(AlxTi1-x)(0.95)O-y (x being varie
d from 0 to 1 in steps of Delta x = 0.1), the influences of elemental
concentration and of the sputtering frequency in the plasma-SNMS high
frequency mode on relative sensitivity factors were investigated. For
Al and Ti they show strong matrix effects which may arise from the emi
ssion of positive secondary ions.