Analytical Suite Metadata

Chemex / (CLAS) GSC AAS Ba / ES Ba



Chemex Labs Limited, Vancouver; atomic absorption spectroscopy (barium, nitrous oxide-acetylene flame).  Samples with high barium concentrations were analysed using emission spectroscopy by the Central Laboratories and Analytical Services (CLAS) Spectrochemical Laboratories, GSC, Ottawa.

General Methodology:

Barium was determined by atomic absorption spectroscopy using a nitrous oxide- acetylene flame.  A 0.5 gram sample was decomposed with 5 ml concentrated HF, 5 ml concentrated HClO4 and 2 ml concentrated HNO3.  The sample was then heated to fumes of perchloric acid and then to dryness.  3 ml concentrated HClO4 were added to the residue, heated to light fumes and then 5 ml of water were added.  The sample solution was then transferred to a test tube calibrated at 25 ml, containing 0.5 ml ionization buffer solution (0.05 gram NaCl/ml).  The sample solution was diluted to 25 ml, mixed and analysed. Samples with high Ba concentrations were analysed using emission spectroscopy by the CLAS (Central Laboratories and Analytical Services) Spectrochemical laboratories, G.S.C., Ottawa.

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Spectroscopy >> Electromagnetic radiation >> Visible-ultraviolet >> Atomic >> Absorption >> Flame >> C2H2/N2O

Children

None


Analytical Decomposition:

Hierarchical classification

Decomposition >> Aqueous dissolution >> Acid

Children

Strong Acid | Moderate Acid | Weak Acid


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  1132     Ba  40

Associated Analytical Packages:

IndexPackage IDPackage Name
1  371     Chemex / (CLAS) GSC (URP stream sediment) Ba, Yukon, 1979
Date modified: