The Ricca Chemical matrix modifier with a composition of 94.59% water, 4.91% nitric acid, 0.49% palladium and 0.01% hydrochloric acid, is suitable for use as a buffer for analyte stabilization or sample matrix volatilization. It can be stored at a temperature of 15 to 30 degree C.

Sodium molybdate, Na2MoO4, is useful as a source of molybdenum. This white, crystalline salt is often found as the dihydrate, Na2MoO4·2H2O. The molybdate(VI) anion is tetrahedral. Two sodium cations coordinate with every one anion.

The Ricca Chemical matrix modifier with a composition of 94.98% water, 4.82% nitric acid, 0.19% palladium and 0.01% hydrochloric acid, is suitable for use as a buffer for analyte stabilization or sample matrix volatilization. It can be stored at a temperature of 15 to 30 degree C.