63043
Magnesium matrix modifier
Synonym(s):
Magnesium nitrate – nitric acid solution, Magnesium modifier
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About This Item
CAS Number:
UNSPSC Code:
12352200
eCl@ss:
32129211
PubChem Substance ID:
NACRES:
NA.21
Beilstein/REAXYS Number:
4948473
MDL number:
mol wt
Mr 256.41 g/mol
Quality Segment
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
SMILES string
[Mg]
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.
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).
signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 4 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 3 - Skin Corr. 1B
supp_hazards
Storage Class
5.1B - Oxidizing hazardous materials
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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