Terms sourced from: http://iupac.org/publications/pac/60/9/1461/

"Nomenclature, symbols, units and their usage in spectrochemical analysis-X. Preparation of materials for analytical atomic spectroscopy and other related techniques (Recommendations 1988)", Ure, A.M.;Butler, L.R.P.;Scott, R.O.;Jenkins, R., Pure and Applied Chemistry 1988, 60(9), 1461