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Automatická spektrálna dekonvolúcia na analýzu rezíduí pesticídov metódou rýchlej GC-MS
[Automated mass spectral deconvolution for pesticide residues analysis by fast GC-MS]
Michal Kirchner, Silvia Ondreková, Eva Matisová
Jazyk slovenština Země Česko
- MeSH
- chemické techniky analytické metody MeSH
- chromatografie plynová metody MeSH
- financování vládou MeSH
- rezidua pesticidů analýza MeSH
- software MeSH
The aim of this study was to estimate the lowest concentration of pesticide residues in non-fatty food matrix at which the residues can be successfully identified by automatic spectral deconvolution software AMDIS. For GC-MS measurements fast GC with narrow capillary column was utilized. For a mixture of 18 pesticides, the identification was successful at concentration levels 4–0.4 mg kg-1 in real matrix samples (apples). With decreasing concentration, the number of identified pesticides and the quality of deconvoluted spectra decreased. The calculated limits of full-scan detection ranged from 0.20 ng for chlorpyrifos to 1.10 ng for captan. Software AMDIS with the used experimental set-up is not sufficiently sensitive for reliable identification of pesticide residues in non-fatty food matrices with low maximal residual limits (e.g. baby food 0.01 mg kg-1).
Automated mass spectral deconvolution for pesticide residues analysis by fast GC-MS
Grant č. APVV-20-000705
Bibliografie atd.Lit.: 7
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- $a Automated mass spectral deconvolution for pesticide residues analysis by fast GC-MS
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- $a Ústav analytickej chémie, Fakulta chemickej a potravinárskej technológie, Slovenská technická univerzita, Bratislava
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- $a The aim of this study was to estimate the lowest concentration of pesticide residues in non-fatty food matrix at which the residues can be successfully identified by automatic spectral deconvolution software AMDIS. For GC-MS measurements fast GC with narrow capillary column was utilized. For a mixture of 18 pesticides, the identification was successful at concentration levels 4–0.4 mg kg-1 in real matrix samples (apples). With decreasing concentration, the number of identified pesticides and the quality of deconvoluted spectra decreased. The calculated limits of full-scan detection ranged from 0.20 ng for chlorpyrifos to 1.10 ng for captan. Software AMDIS with the used experimental set-up is not sufficiently sensitive for reliable identification of pesticide residues in non-fatty food matrices with low maximal residual limits (e.g. baby food 0.01 mg kg-1).
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