Merck
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63043

Supelco

Magnesium matrix modifier

for graphite furnace-AAS

Synonym(s):
Magnesium nitrate – nitric acid solution, Magnesium modifier
CAS Number:
Beilstein:
4948473
MDL number:
eCl@ss:
32129211
PubChem Substance ID:
NACRES:
NA.21

grade

for graphite furnace-AAS

Quality Level

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

InChI

1S/Mg

InChI key

FYYHWMGAXLPEAU-UHFFFAOYSA-N

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.[1]

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.[2] It may also be used for determining brain manganese concentrations during graphite furnace atomic absorption spectrometry (GFAAS).[3]

Packaging

50 mL in glass bottle

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 3 - Skin Corr. 1B

Supplementary Hazards

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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