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Merck
CN

63043

Magnesium matrix modifier

Synonym(s):

Magnesium nitrate – nitric acid solution, Magnesium modifier

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About This Item

CAS Number:
13446-18-9
UNSPSC Code:
12352200
eCl@ss:
32129211
PubChem Substance ID:
329759765
NACRES:
NA.21
Beilstein/REAXYS Number:
4948473
MDL number:
MFCD00085308

Key Documents

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SMILES string

[Mg]

InChI

1S/Mg

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

Quality Level

100

Related Categories

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.

signalword

Danger

Hazard Classifications

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

supp_hazards

EUH071

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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Certificates of Analysis (COA)

Lot/Batch Number
BCCN2421
BCCH9356
BCCF3860
BCCB8361
BCBW1971

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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)
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)
Dinamene Santos et al.
Biological trace element research, 150(1-3), 337-341 (2012-09-14)
Manganese (Mn) is an essential element and it acts as a cofactor for a number of enzymatic reactions, including those involved in amino acid, lipid, protein, and carbohydrate metabolism. Excessive exposure to Mn can lead to poisoning, characterized by psychiatric
Zhichao Liu et al.
PLoS computational biology, 7(12), e1002310-e1002310 (2011-12-24)
Drug-induced liver injury (DILI) is a significant concern in drug development due to the poor concordance between preclinical and clinical findings of liver toxicity. We hypothesized that the DILI types (hepatotoxic side effects) seen in the clinic can be translated

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