Determination of thallium in bovine liver and mouse brains by laser excited atomic fluorescence spectrometry in a graphite tube furnace

Journal Article · Mon Feb 15 04:00:00 EST 1988 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00155a013· OSTI ID:5420033

Dougherty, J P; Costello, J A; Michel, R G

Laser excited atomic fluorescence spectrometry (LEAFS), using an excimer pumped dye laser with a Perkin-Elmer HGA-500 graphite furnace, was used to determine thallium in biological samples at levels lower than those detectable by graphite furnace atomic absorption spectrometry. Modern furnace technology was applied, including rapidly heated graphite tube furnaces, L'vov platforms, matrix, modifiers, optimum charring of the matrix, and the measurement of peak areas of the signals. The instrumental LEAFS detection limit for thallium was 6 fg. The naturally occurring level of thallium in mouse brains, as determined by LEAFS, was 870 pg/brain with a relative standard deviation of 29% for nine brains. Thallium in NBS bovine liver was determined by LEAFS to be 2.9 ng/g, which agrees, within experimental error, with the noncertified value of 3.1 ng/g.

• Research Organization: Univ. of Connecticut, Storrs
• OSTI ID: 5420033
• Journal Information: Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 60:4; ISSN ANCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
550200 -- Biochemistry
59 BASIC BIOLOGICAL SCIENCES
ANIMAL TISSUES
ANIMALS
BODY
BRAIN
CATTLE
CENTRAL NERVOUS SYSTEM
CHEMICAL ANALYSIS
COWS
DATA
DIGESTIVE SYSTEM
DOMESTIC ANIMALS
DYE LASERS
ELEMENTS
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
GLANDS
INFORMATION
LASERS
LIQUID LASERS
LIVER
MAMMALS
MATERIALS
METALS
MICE
NERVOUS SYSTEM
NUMERICAL DATA
ORGANS
QUANTITATIVE CHEMICAL ANALYSIS
RODENTS
RUMINANTS
SPECTROSCOPY
THALLIUM
TISSUES
TOXIC MATERIALS
TRACE AMOUNTS
VERTEBRATES