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Transversely heated graphite atomizer–atomic absorption spectrometry (thga aas) in combination with flow injection analysis system‐hydride generation (fias hg) as a reliable screening method for organolead compounds
Author(s) -
Bettmer J.,
Cammann K.
Publication year - 1994
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.590080711
Subject(s) - chemistry , detection limit , atomic absorption spectroscopy , hydride , hydrochloric acid , analytical chemistry (journal) , graphite , flow injection analysis , mass spectrometry , graphite furnace atomic absorption , metal , inorganic chemistry , chromatography , organic chemistry , physics , quantum mechanics
The combination of a flow injection analysis system‐hydride generation (FIAS HG) and transversely heated graphite atomizer–atomic absorption spectrometry (THGA AAS) has been applied for the sensitive detection of organolead compounds [e.g. detection limit of trimethyl‐lead species (TriML): 32 ng l −1 for a 0.5 ml sample loop] in the presence of inorganic lead. A mixture of hydrochloric acid and ethylenediaminetetra‐acetic acid (EDTA) as a carrier solution in the flow injection system suppressed interferences of inorganic lead. Calibration with various organolead compounds in the range 0.25–8 μg l −1 was carried out in the presence of 10 mg l −1 Pb 2+ without any interferences. Additionally, statistical aspects of the determination of trimethyl‐lead have been studied. Different parameters, e.g. working range, detection limit, recovery function etc., were calculated with respect to quality assurance in metal speciation.