Analysis and identification of pesticides and their transformation products in groundwater by High Resolution Mass Spectrometry
Résumé
Nowadays it is increasingly important for public policy to know what compounds are present in
groundwater, which of them must be monitored and their
fate
.
Thus,
specific analytical
methodology
is required
to identify these micropollutants, including emer
ging substances or
transformation products
(TPs)
potentially present at low concentrations.
To improve
limit of
detection
,
POCIS (Polar Organic Chemical Integrative Sampler) were used as passive samplers
for the pre
-
concentration of
polar
compounds.
High Res
olution Mass Spectrometry
(HRMS)
offer
ing
the possibility of detecting a large number of contaminants without pre
-
selection of analytes due to its accurate
-
mass full
-
spectrum acquisition
was also applied
.
The
combination of these two techniques
carried out o
n
s
everal groundwater sampled
monthly
confirms
the advantage of
i)
improvement of
organic chemical screening
with POCIS
and ii)
identification of non
-
targeted organic compounds with
HRMS technique.
Several
p
esticides and
some of
their transformation products were
detected for the first time in these
sites
.
Origine : Fichiers produits par l'(les) auteur(s)
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