Table 3. The Integrated Thermal Desorption Profile Peak Areas (PAs) of Detected Pesticides in Different Sample Matrices and the Corresponding Quantitative Results Gained with Validated Methods.
Formula | adduct | peak area | quantitative detection (mg/kg)a | |
---|---|---|---|---|
Watermelon extract | ||||
dimethomorph | C21H22ClNO4 | [M+H]+ | 8.79E2 | 0.010 |
dinotefuran | C7H15N4O3+ | [M+Br]− | 2.41E3 | 0.011 |
imazalil | C14H14N2Cl2O | [M+H]+ | 1.12E4 | 0.83 |
Lime extract | ||||
azoxystrobin | C22H17N3O5 | [M+H]+ | 1.74E3 | 0.022 |
imazalil | C14H14N2Cl2O | [M+H]+ | 1.09E5 | 1.5 |
Avocado extract | ||||
thiabendazole | C10H7N3S | [M+H]+ | 1.57E5 | 0.51 |
Pineapple extract | ||||
fludioxonil | C12H6F2N2O2 | [M+Br]− | 5.35E5 | 0.48 |
diazinonb | C12H21N2O3PS | [M+H]+ | 1.1E3 | 0.011 |
Pineapple swabbingc | ||||
fludioxonil | C12H6F2N2O2 | [M+Br]− | 4.2E5 | 0.48 |
diazinon | C12H21N2O3PS | [M+H]+ | 7.9E2 | 0.011 |
Pineapple juice | ||||
fludioxonil | C12H6F2N2O2 | [M+Br]− | 4.4E3 | 0.48 |
diazinon | C12H21N2O3PS | [M+H]+ | 1.1E2 | 0.011 |
Quantitative detection presents the concentrations reported in mg/kg, which are correlated with the concentrations obtained from standardized measurements performed on the same samples by the Finnish Customs.
The measurement of pineapple extract in positive mode was conducted by injecting 5 μL of the fruit extract.
The pesticide content of the pineapple fruit swab is reported in relation to the whole pesticide content of the fruit determined by the Finnish Customs using the standardized procedures. This approach was followed as the actual pesticide amount present in the surface of the fruit was unknown.