63043
Magnesium matrix modifier
for graphite furnace-AAS
Synonym(s):
Magnesium nitrate – nitric acid solution, Magnesium modifier
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About This Item
CAS Number:
Beilstein:
4948473
MDL number:
UNSPSC Code:
12000000
eCl@ss:
32129211
PubChem Substance ID:
NACRES:
NA.21
Pricing and availability is not currently available.
Recommended Products
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
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.[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]
Signal Word
Danger
Hazard Statements
Precautionary 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
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Lauri H. J. Lajunen, P. Peramaki
Spectrochemical Analysis by Atomic Absorption and Emission, 142-144 (2004)
Effectiveness of palladium plus magnesium as a matrix modifier for the determination of lead in solutions and soil slurries by electrothermal atomisation atomic absorption spectrometry.
Hinds, Michael W., Mohan Katyal, and Kenneth W. Jackson.
Journal of Analytical Atomic Spectrometry, 3, 83-87 (1988)
Magnesium nitrate as a matrix modifier in the stabilized temperature platform furnace
W. Slavin, G. R. Carnrick, and D. C. Manning
Analytical Chemistry, 54, 621-624 (1982)
Dinamene Santos et al.
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