Multielemental Characterization of Several Brands of Fullerenes and Fullerene Precursors by Instrumental Neutron Activation Analysis

Henrik Rausch, T. Braun

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11 Citations (Scopus)

Abstract

The characterization of the purity of fullerenes is based on the concept of defining the percentage amount of the main component (e.g., C60, C70, etc.) versus the minor fractions or microfractions of the homologue species and/ or other polycyclic organic compounds. It has also to be considered that fullerene products may be contaminated in some degree by element impurities as well, both from the production processes and from the various precursor materials themselves. We report here for the first time detailed data on trace element impurities in various fullerene precursors as well as in the main C60 and C70 fullerene products of different producers, measured by instrumental neutron activation analysis. The concentration distributions of about 35 trace elements have been studied, including the determination of the relevant limits of detection. It could be established that all fullerene materials investigated contain a broad scale of trace elements distributed within a fairly wide concentration range, from ppb (ng/g) up to ppm (μg/g) levels. For some impurity elements, extremely high concentration levels were found, indicating that elemental impurities have to be considered when studying me electrical, magnetic, and other features of the fullerenes.

Original languageEnglish
Pages (from-to)2312-2316
Number of pages5
JournalAnalytical Chemistry
Volume69
Issue number13
Publication statusPublished - Jul 1 1997

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Fullerenes
Neutron activation analysis
Trace Elements
Impurities
Organic compounds

ASJC Scopus subject areas

  • Analytical Chemistry

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Multielemental Characterization of Several Brands of Fullerenes and Fullerene Precursors by Instrumental Neutron Activation Analysis. / Rausch, Henrik; Braun, T.

In: Analytical Chemistry, Vol. 69, No. 13, 01.07.1997, p. 2312-2316.

Research output: Contribution to journalArticle

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