A new and sensitive GC-ITD-MS method for determination of 37 pesticides in fruit jams
A novel GC-ITD-MS method have
been developed and successfully validated for
the determination of 37 pesticides in fruit jams.
In order to facilitate the sample handling and
to reduce the interference of the high sugar
content of the jams the samples were slurried
with water. The pesticides extraction was done
with the sulfate QuEChERS method using PSA
for clean-up. The method was validated by the
analysis of spiked samples at the concentrations
of 10, 20 e 50 μg kg-1 (n=6). In total 41
pesticides were studied and 37 fulfilled all the
requirements for the validation (recoveries from
70-120% and RSD ≤ 20%). So, the reporting
limit (RL) was established at 10, 20 e 50 μg
kg-1 for 26 (64%), 4 (10%) e 7 (17%) pesticides,
respectively. Three compounds (7%) were not
detected at the studied concentrations levels
and one pesticide (2%) was detected but did
not meet the requirements for validation. The
method is easy to implement, uses equipments
commonly available in laboratories and can be
recommended for routine multiresidue analysis
of jams.
A new and sensitive GC-ITD-MS method for determination of 37 pesticides in fruit jams
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DOI: Atena
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Palavras-chave: Fruit Jams. Gas chromatography. Mass spectrometry. Residues. QuEChERS
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Keywords: Atena
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Abstract:
Atena
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Número de páginas: 15
- Bárbara reichert