Analysis of trimethylgallium with inductively coupled plasma spectrometry

Conference · Tue Jul 01 00:00:00 EDT 1986 · Anal. Chem.; (United States)

OSTI ID:5569795

Bertenyi, I; Barnes, R M

Two methods for the analysis of trimethylgallium (TMG) are described. Since TMG is pyrophoric and volatile and the nature of its impurity species is not known, separate methods were employed for volatile and nonvolatile impurities. The nonvolatile impurities (Al, Cu, Fe, Mg) were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) in an aqueous solution of decomposed TMG with conventional nebulization. The volatile impurity silicon in TMG also was determined by ICP-AES but with exponential dilution. A known quantity of TMG was placed in an exponential dilution flask, and argon swept the vapor out of the flask into the plasma. Limits of detection in 1 g of TMG were 2 ..mu..g of Al, 0.6 ..mu..g of Fe, 0.6 ..mu..g of Cu, and 0.08 ..mu..g of Mg. The Si detection limit was 0.6 ..mu..g. The analysis precision for practical samples was 10-20%.

• Research Organization: Univ. of Massachusetts, Amherst
• OSTI ID: 5569795
• Journal Information: Anal. Chem.; (United States), Vol. 58:8; Conference: 23. colloquium spectroscopicum internationale, Amsterdam, Netherlands, Jul 1983
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM
EMISSION SPECTROSCOPY
COPPER
GALLIUM COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
IRON
MAGNESIUM
ORGANOMETALLIC COMPOUNDS
SILICON
AQUEOUS SOLUTIONS
EXPERIMENTAL DATA
IMPURITIES
PLASMA
TRACE AMOUNTS
ALKALINE EARTH METALS
CHEMICAL ANALYSIS
DATA
DISPERSIONS
ELEMENTS
INFORMATION
METALS
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
SEMIMETALS
SOLUTIONS
SPECTROSCOPY
TRANSITION ELEMENTS
400104* - Spectral Procedures- (-1987)