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Matrix Modifiers (for Graphite Furnace AAS)

Chemical modification should be considered if an analyte is highly volatile, or, if the analyte and matrix volatilize at similar temperatures. Such modification would allow ashing at higher (or atomization at lower) furnace temperatures, resulting in elimination of the matrix with no loss of the analyte (or atomisation of the analyte, but not the matrix). Several compounds are cited in the literature for this application, the most common ones being magnesium and palladium solutions.

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Product #	Description
428922	Ammonium hydrogenphosphate, matrix modifier solution ~40 % (w/v) in H₂O, 99.999%
428868	Calcium matrix modifier solution 2% Ca in 1 wt. % HNO₃, 99.9995%
428884	Lanthanum matrix modifier solution 5% La in 1 wt. % HCl, 99.999%
428876	Lanthanum matrix modifier solution 5% La in 1 wt. % HNO₃, 99.999%
04052	Lanthanum(III) oxide puriss. p.a., for AAS, ≥99.5% (AAS)
63043	Magnesium Matrix Modifier puriss. p.a., for graphite furnace-AAS
428892	Magnesium matrix modifier solution 2% Mg in <5 wt. % HNO₃, 99.9995%
63084	Magnesium nitrate hexahydrate BioUltra, ≥99.0% (KT)
428906	Nickel matrix modifier solution 5% Ni in 1 wt. % HNO₃, 99.999%
76040	Palladium Matrix Modifier puriss. p.a., for graphite furnace-AAS
428914	Palladium matrix modifier solution 2% Pd in 1-3 wt.% HNO₃, 99.999%

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