Table 3.
Average recovery rates of highly polar anionic pesticides (n=5) in red currants, cucumber, rice, soybean, milk, and liver using QuPPe extraction and IC-MS/MS on an AS19 column. QuPPe extracts were fivefold diluted prior to injection
| Analyte | Red currants | Cucumber | Rice | Soybean | Milk | Liver | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Level in mg/kg | Ave. recovery in % (±RSD in %) | Level in mg/kg | Ave. recovery in % (±RSD in %) | Level in mg/kg | Ave. recovery in % (±RSD in %) | Level in mg/kg | Ave. recovery in % (±RSD in %) | Level in mg/kg | Ave. recovery in % (±RSD in %) | Level in mg/kg | Ave. recovery in % (±RSD in %) | |
| AMPA | 0.01 | 96 (5.2) | 0.02 | 110 (4.8) | 0.1 | 96 (2.4) | 0.1 | 105 (4.5) | 0.01 | 115 (8.2) | 0.05 | 96 (3.6) |
| Cyanuric acid | 0.01 | * | 0.05 | 86 (14) | 0.1 | 94 (10) | 0.1 | * | 0.05 | 98 (12) | 0.1 | 103 (12) |
| Ethephon | 0.01 | 102 (7.9) | 0.02 | 90 (5.2) | 0.02 | 104 (14) | 0.02 | 99 (10) | 0.01 | 95 (3.6) | 0.01 | 101 (10) |
| Fosetyl | 0.01 | 104 (7.4) | 0.02 | 101 (3.1) | 0.02 | 89 (1.8) | 0.02 | 102 (5.2) | 0.01 | 100 (1.4) | 0.01 | 103 (4.6) |
| Glufosinate | 0.01 | 101 (1.8) | 0.02 | 99 (4.6) | 0.06 | 90 (2.3) | 0.06 | 102 (1.8) | 0.01 | 87 (5.3) | 0.03 | 109 (6.2) |
| Glyphosate | 0.01 | 101 (2.2) | 0.02 | 96 (1.6) | 0.1 | 116 (7.3) | 0.1 | 105 (6.3) | 0.01 | 98 (11) | 0.05 | 100 (5.6) |
| HEPA | 0.01 | 99 (0.9) | 0.02 | 100 (4.9) | 0.04 | 95 (6.8) | 0.04 | 96 (8.3) | 0.01 | 103 (8.8) | ** | ** |
| MPPA | 0.01 | 102 (2.1) | 0.02 | 103 (4.0) | 0.04 | 95 (1.8) | 0.04 | 104 (2.6) | 0.01 | 97 (2.4) | 0.02 | 100 (6.6) |
| NAGlu | 0.01 | 101 (1.6) | 0.02 | 103 (3.0) | 0.04 | 96 (2.6) | 0.04 | 98 (6.7) | 0.01 | 108 (4.4) | 0.02 | 102 (5.2) |
| NAGly | 0.01 | 100 (0.9) | 0.02 | 104 (2.7) | 0.1 | 88 (14) | 0.1 | 102 (4.0) | 0.01 | 100 (13) | 0.05 | 106 (3.7) |
*Validation not successful at that level
**Validation not possible because of naturally occurring HEPA in bovine liver