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Statements

Subject Item
n2:RIV%2F60461373%3A22330%2F11%3A43892688%21RIV12-MSM-22330___
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Dithiocarbamates (DTCs) are fungicides that require a specific single-residue method for detection and verification of compliance with maximum residue limits (MRLs) as established for fruit and vegetables in the EU. In this study, the use of ambient mass spectrometry was investigated for specific determination of individual DTCs (thiram, ziram) in fruit. Two complementary approaches have been investigated for their rapid analysis: (i) direct analysis in real time (DART) combined with medium-high resolution/accurate mass time-of-flight mass spectrometry (TOFMS) and high-resolution/accurate mass Orbitrap MS, and (ii) desorption electrospray ionization (DESI) combined with tandem-in-time mass spectrometry (MS(2)). With both techniques, thiram deposited on a glass surface (DART) or Teflon (DESI) could be directly detected. With DART, this was also possible for ziram. Before the instrumental analysis of fruit matrix, an extract had to be prepared following a straightforward procedure. The raw extracts were deposited on a slide (DESI), or rods were dipped into the extracts (DART), after which thiram and ziram could be rapidly detected (typically 10 samples in a few minutes). In the case of thiram, the lowest calibration levels were 1 mg/kg (DART-TOFMS, DESI-MS(2)) and 0.1 mg/kg (DART-Orbitrap MS). For ziram, the achieved lowest calibration levels were 0.5 mg/kg (DART-TOFMS) and 1 mg/kg (DART-Orbitrap MS). In all cases, this was sufficiently low to test samples against EU-MRLs for a number of fruit crops. Using an internal standard, (semi)quantitative results could be obtained. Dithiocarbamates (DTCs) are fungicides that require a specific single-residue method for detection and verification of compliance with maximum residue limits (MRLs) as established for fruit and vegetables in the EU. In this study, the use of ambient mass spectrometry was investigated for specific determination of individual DTCs (thiram, ziram) in fruit. Two complementary approaches have been investigated for their rapid analysis: (i) direct analysis in real time (DART) combined with medium-high resolution/accurate mass time-of-flight mass spectrometry (TOFMS) and high-resolution/accurate mass Orbitrap MS, and (ii) desorption electrospray ionization (DESI) combined with tandem-in-time mass spectrometry (MS(2)). With both techniques, thiram deposited on a glass surface (DART) or Teflon (DESI) could be directly detected. With DART, this was also possible for ziram. Before the instrumental analysis of fruit matrix, an extract had to be prepared following a straightforward procedure. The raw extracts were deposited on a slide (DESI), or rods were dipped into the extracts (DART), after which thiram and ziram could be rapidly detected (typically 10 samples in a few minutes). In the case of thiram, the lowest calibration levels were 1 mg/kg (DART-TOFMS, DESI-MS(2)) and 0.1 mg/kg (DART-Orbitrap MS). For ziram, the achieved lowest calibration levels were 0.5 mg/kg (DART-TOFMS) and 1 mg/kg (DART-Orbitrap MS). In all cases, this was sufficiently low to test samples against EU-MRLs for a number of fruit crops. Using an internal standard, (semi)quantitative results could be obtained.
dcterms:title
Direct analysis of dithiocarbamate fungicides in fruit by ambient mass spectrometry Direct analysis of dithiocarbamate fungicides in fruit by ambient mass spectrometry
skos:prefLabel
Direct analysis of dithiocarbamate fungicides in fruit by ambient mass spectrometry Direct analysis of dithiocarbamate fungicides in fruit by ambient mass spectrometry
skos:notation
RIV/60461373:22330/11:43892688!RIV12-MSM-22330___
n10:predkladatel
n14:orjk%3A22330
n5:aktivita
n19:Z
n5:aktivity
Z(MSM6046137305)
n5:cisloPeriodika
10
n5:dodaniDat
n17:2012
n5:domaciTvurceVysledku
n13:8580588 n13:3901556 n13:8559937
n5:druhVysledku
n6:J
n5:duvernostUdaju
n16:S
n5:entitaPredkladatele
n15:predkladatel
n5:idSjednocenehoVysledku
194743
n5:idVysledku
RIV/60461373:22330/11:43892688
n5:jazykVysledku
n7:eng
n5:klicovaSlova
Ambient mass spectrometry; Fruit; Dithiocabamates; Pesticides
n5:klicoveSlovo
n9:Ambient%20mass%20spectrometry n9:Pesticides n9:Fruit n9:Dithiocabamates
n5:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n5:kontrolniKodProRIV
[F6E1F08AC7B4]
n5:nazevZdroje
Food Additives and Contaminants
n5:obor
n18:GM
n5:pocetDomacichTvurcuVysledku
3
n5:pocetTvurcuVysledku
5
n5:rokUplatneniVysledku
n17:2011
n5:svazekPeriodika
28
n5:tvurceVysledku
Hajšlová, Jana Riddellová, Kateřina Zomer, Paul Mol, Hans Čajka, Tomáš
n5:wos
000297027500008
n5:zamer
n20:MSM6046137305
s:issn
0265-203X
s:numberOfPages
11
n12:doi
10.1080/19440049.2011.590456
n11:organizacniJednotka
22330