Potassium perchromate standard for determination of paramagnetic spin concentration, g values, and magnetic moments of fossil fuels. [Potassium perchromate is used as standard and compared with DPPH (1,1-diphenyl-2-picrylhydrazyl)]

Journal Article · Fri May 01 00:00:00 EDT 1981 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac00229a056· OSTI ID:6484897

Dalal, N S ^[1]; Suryan, M M; Seehra, M S

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1. West Virginia Univ., Morgantown

During electron paramagnetic resonance (EPR) studies of shales and related samples, it was found that the signals from these samples overlapped strongly those of the internal standards commonly available, such as DPPH (1,1-diphenyl-2-picryl-hydrazyl), nitroxides, and pitch. This paper reports that K/sub 3/CrO/sub 8/ (potassium perchromate), a Cr(V):3d paramagnetic compound can serve as a versatile internal standard for measuring paramagnetic spin concentration and g values of organic free radicals by EPR spectroscopy and for determining magnetic moments by static magnetic susceptibility techniques.

• OSTI ID: 6484897
• Journal Information: Anal. Chem.; (United States), Vol. 53:6
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
01 COAL, LIGNITE, AND PEAT
ELECTRON SPIN RESONANCE
STANDARDS
RADICALS
CHROMATES
COAL
G VALUE
MAGNETIC MOMENTS
OIL SHALES
POTASSIUM COMPOUNDS
ALKALI METAL COMPOUNDS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHROMIUM COMPOUNDS
ENERGY SOURCES
FOSSIL FUELS
FUELS
MAGNETIC RESONANCE
MATERIALS
OXYGEN COMPOUNDS
RESONANCE
TRANSITION ELEMENT COMPOUNDS
040500* - Oil Shales & Tar Sands- Properties & Composition
010600 - Coal
Lignite
& Peat- Properties & Composition