Table A2.
GC-MS/MS parameters optimized for determination of 60 pesticide residues.
| Compound Name | Retention Time (min) |
Quantitative Ion Pairs | Collision Energy (ev) | Quantitative Ion Pairs | Collision Energy (ev) |
|---|---|---|---|---|---|
| Chlorothalonil | 11.96 | 264 > 229 | 15 | 266 > 231 | 10 |
| Fenthion | 14.56 | 278 > 109 | 20 | 245 > 125 | 15 |
| Difenoconazole | 22.06 | 323 > 265 | 15 | 325 > 267 | 15 |
| Profenofos | 16.72 | 339 > 269 | 15 | 337 > 267 | 15 |
| Pyridaben | 20.40 | 309 > 147 | 15 | 364 > 309 | 10 |
| Isoprothiolane | 16.68 | 204 > 85 | 28 | 290 > 118 | 12 |
| Dichlorvos | 5.48 | 109 > 79 | 10 | 185 > 93 | 15 |
| Ediphenphos | 18.06 | 173 > 109 | 10 | 310 > 173 | 14 |
| Chlorpyrifos | 14.62 | 314 > 258 | 15 | 316 > 260 | 15 |
| Parathion | 14.64 | 291 > 109 | 15 | 291 > 137 | 10 |
| Pendimethalin | 15.47 | 252 > 162 | 15 | 252 > 191 | 10 |
| Diazinon | 11.65 | 304 > 179 | 10 | 179 > 137 | 20 |
| Fipronil | 15.76 | 367 > 213 | 30 | 369 > 215 | 30 |
| Cyfluthrin | 20.70–20.83 | 226 > 206 | 10 | 226 > 199 | 10 |
| Flucythrinate | 21.10–21.24 | 199 > 157 | 10 | 157 > 107 | 15 |
| Methamidophos | 5.37 | 141 > 95 | 10 | 141 > 94 | 10 |
| Phorate | 10.02 | 260 > 75 | 10 | 231 > 203 | 10 |
| Chlorpyrifos-methyl | 13.05 | 286 > 93 | 20 | 125 > 47 | 15 |
| Parathion-methyl | 13.05 | 263 > 109 | 15 | 125 > 47 | 10 |
| Pirimiphos-methyl | 14.06 | 290 > 125 | 20 | 305 > 180 | 8 |
| Isofenphos-methyl | 15.33 | 199 > 121 | 10 | 241 > 199 | 10 |
| Fenpropathrin | 19.09 | 181 > 152 | 10 | 265 > 210 | 20 |
| Metalaxyl | 13.49 | 234 > 146 | 20 | 249 > 190 | 10 |
| Monocrotophos | 9.78 | 127 > 109 | 12 | 127 > 95 | 15 |
| Pirimicarb | 12.45 | 166 > 96 | 10 | 238 > 166 | 10 |
| Quinalphos | 15.74 | 298 > 156 | 10 | 298 > 190 | 10 |
| Dimethoate | 13.05 | 125 > 47 | 10 | 125 > 79 | 10 |
| Bifenthrin | 19.00 | 181 > 166 | 10 | 181 > 165 | 10 |
| Cyhalothrin and Lambda-cyhalothrin | 19.60–19.74 | 181 > 152 | 10 | 208 > 181 | 10 |
| Permethrin | 20.28–20.37 | 183 > 153 | 15 | 163 > 127 | 10 |
| Cypermethrin and Beta-cypermethrin | 20.93–21.16 | 163 > 91 | 15 | 163 > 127 | 10 |
| Isazophos | 12.04 | 161 > 119 | 15 | 257 > 162 | 10 |
| Malathion | 14.35 | 127 > 99 | 10 | 173 > 127 | 5 |
| Etofenprox | 21.17 | 163 > 107 | 20 | 163 > 135 | 13 |
| Cyprodinil | 15.28 | 225 > 224 | 15 | 224 > 208 | 20 |
| Pyrimethanil | 11.47 | 198 > 183 | 15 | 198 > 118 | 30 |
| Ethoprophos | 9.14 | 200 > 158 | 5 | 158 > 97 | 20 |
| Fenvalerate | 21.70–21.87 | 419 > 225 | 8 | 419 > 167 | 12 |
| Triazophos | 17.85 | 161 > 134 | 10 | 257 > 161 | 10 |
| Triadimefon | 14.71 | 208 > 111 | 10 | 208 > 181 | 10 |
| Fenitrothion | 13.91 | 277 > 260 | 5 | 260 > 125 | 15 |
| Methidathion | 16.03 | 145 > 85 | 10 | 145 > 58 | 20 |
| Isocarbophos | 14.82 | 289 > 136 | 15 | 230 > 212 | 10 |
| Quintozine | 11.21 | 295 > 237 | 15 | 237 > 143 | 25 |
| Tebuconazole | 18.37 | 250 > 125 | 22 | 250 > 153 | 12 |
| Deltamethrin | 22.17–22.37 | 251 > 172 | 8 | 253 > 174 | 8 |
| Phosmet | 18.92 | 160 > 133 | 10 | 317 > 160 | 10 |
| Omethoate | 8.62 | 156 > 110 | 10 | 156 > 79 | 15 |
| Acephate | 6.81 | 136 > 42 | 10 | 136 > 94 | 10 |
| Iprodione | 18.80 | 314 > 245 | 10 | 316 > 247 | 10 |
| Atrazine | 10.78 | 200 > 122 | 10 | 215 > 200 | 10 |
| Piperonyl butoxide | 18.53 | 176 > 103 | 25 | 176 > 131 | 15 |
| Aldrin | 14.33 | 261 > 191 | 30 | 298 > 263 | 10 |
| Dieldrin | 16.80 | 261 > 191 | 30 | 277 > 241 | 10 |
| O,’p-DDT | 17.54 | 235 > 165 | 10 | 235 > 200 | 15 |
| P,’p-DDT | 18.17 | 235 > 165 | 10 | 235 > 200 | 15 |
| α-666 | 10.11 | 181 > 145 | 15 | 221 > 183 | 10 |
| β-666 | 10.91 | 181 > 145 | 15 | 221 > 183 | 10 |
| δ-666 | 11.06 | 181 > 145 | 15 | 221 > 183 | 10 |
| γ-666 | 11.81 | 181 > 145 | 15 | 221 > 183 | 10 |