Innovations in the Speciation of Organolead Compounds in Water: Towards a More Rational, Rapid, and Simple Analytical Process
Autor
Baena, J.R.
Gallego, M.
Valcárcel, M.
Editor
The Scientific WorldFecha
2002Materia
OrganoleadFullerene
Continous flow systems
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Speciation analysis calls for rapid, simple systems for minimizing errors made in
the most troublesome of all steps in the analytical process: sample preparation. In
this context, continuous-flow systems are of great help. The evolution in the
different methodologies enabled solutions to the main shortcomings occurring
from the lack of selectivity of using RP–C18 as sorbent material. One solution was
a shift to more sensitive and selective, but only partially automated, systems
employing C60 fullerene and Grignard´s reagent; another was a shift to completely
automated systems employing sodium tetrapropylborate; and a final solution was
to employ the simplest possible configuration by removing the reagent stream.
The analytical methods developed allowed the identification and quantification of
different organolead species at the pg/ml levels in rainwater samples, with
precision (RSD) of about 5% and recoveries ranging from 92 to 100%.