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63043 Sigma-Aldrich

Magnesium matrix modifier

for graphite furnace-AAS

Synonym: Magnesium modifier, Magnesium nitrate – nitric acid solution

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Properties

Related Categories Analytical Reagents, Analytical/Chromatography, Applications, Atomic Absorption Spectroscopy (AAS), Food & Beverage Analysis,
grade   for graphite furnace-AAS
InChI Key   FYYHWMGAXLPEAU-UHFFFAOYSA-N
mol wt   Mr 256.41 g/mol
concentration   10.0 g/L±0.3 g/L Mg (in ~17% nitric acid)
cation traces   Ag: ≤0.001 mg/kg
  As: ≤0.01 mg/kg
  Cd: ≤0.001 mg/kg
  Pb: ≤0.01 mg/kg
  Se: ≤0.1 mg/kg
  Tl: ≤0.01 mg/kg

Description

Other Notes

Same product — same quality — now Sigma-Aldrich brand

Packaging

50 mL in glass bottle

Application

Magnesium along with palladium may be used as matrix modifier during platform atomization, to determine lead in solution and in soil slurries, using electrothermal atomization atomic absorption spectrometry. It may also be used for determining brain manganese concentrations during graphite furnace atomic absorption spectrometry (GFAAS).

General description

Matrix modification is a procedure for reducing volatilization and vapour-phase intrusions using a chemical reagent which acts as buffer enabling the use of higher pre-treated and atomization temperatures. The reagent causes either the interfering component to become more volatile or the analyte is converted to less volatile form. Magnesium is a first class modifier, forming oxides in the graphite furnace during heat pre-treatment. Magnesium added as nitrate has high thermal stability.

Price and Availability

Suggested Laboratory Gloves


Laboratory GlovesThis substance has been tested against several types of hand protection for CE compliance. Click below to find the recommended gloves for handling this product.



Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 3093 5.1(8) / PGII
WGK Germany 
2

Documents

Certificate of Analysis

Protocols & Articles

Articles

Optimizing Analysis Conditions in AAS Measurements

As your one-stop provider for instrumental analysis via Atomic Absorption Spectroscopy (AAS), we offer a comprehensive choice of reagents for use in sample preparation as well as in calibration. Our ...
Keywords: Absorption, Atomic absorption spectroscopy, Buffers, Phase transitions, Sample preparations, Spectroscopy

Peer-Reviewed Papers
15

References

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