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Title Factors influencing the determination of molybdenum in plant samples by electrothermal atomic absorption spectrometry
Creator/Author Hoenig, M. ; Elsen, Y.V. ; Cauter, R.V.
Publication Date1986 Apr 01
OSTI IdentifierOSTI ID: 5955219
Other Number(s)CODEN: ANCHA
Resource TypeJournal Article
Resource RelationAnal. Chem. ; Vol/Issue: 58:4
Research OrgMinistry of Agriculture, Tervuren, Belgium
Subject400104 -- Spectral Procedures-- (-1987); MOLYBDENUM-- ABSORPTION SPECTROSCOPY;PLANTS-- QUANTITATIVE CHEMICAL ANALYSIS; ACCURACY;CALIBRATION STANDARDS;DECOMPOSITION;EXPERIMENTAL DATA;GRAPHITE;SURFACES
Related SubjectCARBON;CHEMICAL ANALYSIS;CHEMICAL REACTIONS;DATA;ELEMENTAL MINERALS;ELEMENTS;INFORMATION;METALS;MINERALS;NONMETALS;NUMERICAL DATA;SPECTROSCOPY;STANDARDS;TRANSITION ELEMENTS
Description/Abstract The progressive degradation of the pyrolytic graphite surface of atomizers provides variable and misleading results of molybdenum peak-height measurements.^The changes in the peak shapes produce no analytical problems during the lifetime of the atomizer (approx.300 firings) when integrated absorbance (A.s signals) is considered and the possible base-line drifts are controlled.^This was demonstrated on plant samples mineralized by simple digestion with a mixture of HNO/sub 3/ and H/sub 2/O/sub 2/.^The value of this method was assessed by comparison with a standard dry oxidation method and by molybdenum determination in National Bureau of Standards reference plant samples.^The relative standard deviations (n = 5) of the full analytical procedure do not exceed 7%.^13 references, 3 figures, 3 tables.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 777-780
System Entry Date2001 May 13

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