Table 2 Matrix effect (ME) for 60 veterinary antibiotic residues spiked in blank milk and milk power sample for individual donors (n = 5)
No. | Compound | Sample type | No. | Compound | Sample type | No. | Compound | Sample type | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Milk | Milk power | Milk | Milk power | Milk | Milk power | ||||||
10 μg/kg (ME %) | 10 μg/kg (ME %) | 10 μg/kg (ME %) | 10 μg/kg (ME %) | 10 μg/kg (ME %) | 10 μg/kg (ME %) | ||||||
1 | Sulfaguanidine | 115.2 | 90.6 | 21 | Sulfamethizole | 107.6 | 88.8 | 41 | Ornidazole | 106.1 | 88.8 |
2 | 2-Methyl-5-nitroimidazole | 101.5 | 115.3 | 22 | Sulfamethoxydiazine | 93.5 | 99.9 | 42 | Sulfamethoxazole | 115.0 | 97.6 |
3 | Metronidazole | 100.9 | 117.0 | 23 | Ciprofloxacin | 93.5 | 92.8 | 43 | Sulfisoxazole | 114.0 | 99.6 |
4 | Cefapirin | 90.2 | 87.5 | 24 | Dimetridazole | 99.2 | 108.7 | 44 | Ipronidazole | 101.8 | 100.2 |
5 | Sulfadiazine | 118.8 | 115.0 | 25 | Marbofloxacin | 101.8 | 101.9 | 45 | Doxycycline | 102.6 | 114.1 |
6 | Sulfapyridine | 117.5 | 115.0 | 26 | Fleroxcain | 89.7 | 101.1 | 46 | Ceftiofur | 110.1 | 114.0 |
7 | Lincomycin | 104.8 | 107.6 | 27 | Orbifloxacin | 91.5 | 109.3 | 47 | Sulfaquinoxaline | 114.1 | 95.1 |
8 | Sulfathiazole | 109.3 | 114.5 | 28 | Enrofloxacin | 106.2 | 97.0 | 48 | Sulfaphenazole | 106.1 | 112.5 |
9 | Sulfamerazine | 94.4 | 114.0 | 29 | Sulfamethoxypyridazine | 85.7 | 104.3 | 49 | Sulfadimoxine | 105.6 | 97.2 |
10 | Ampicillin | 114.4 | 92.6 | 30 | Sparfloxacin | 96.1 | 114.0 | 50 | Erythromycin | 113.0 | 100.3 |
11 | Penicillin G | 109.4 | 111.1 | 31 | Demethylchlortetracycline | 102.3 | 114.8 | 51 | Tilmicosin | 101.3 | 111.5 |
12 | Trimethoprim | 101.4 | 104.5 | 32 | Sulfachlorpyridazine | 97.0 | 109.6 | 52 | Penicillin V | 107.2 | 112.0 |
13 | Metronidazole-OH | 110.4 | 113.0 | 33 | Difloxacin | 95.5 | 115.4 | 53 | Tylosin | 82.1 | 110.0 |
14 | Norfloxacin | 89.7 | 100.5 | 34 | Chlorotetracycline | 92.6 | 114.0 | 54 | Flumequine | 90.8 | 111.2 |
15 | Lomefloxacin | 106.5 | 94.4 | 35 | Spiramycin | 90.2 | 92.8 | 55 | Nalidixic acid | 86.3 | 102.1 |
16 | Enoxacin | 112.8 | 100.2 | 36 | Ipronidazole-OH | 104.3 | 99.4 | 56 | Oxacillin | 114.0 | 106.2 |
17 | Ofloxacin | 92.5 | 96.1 | 37 | Sulfadimethoxypyrimidine | 104.7 | 84.3 | 57 | Cloxacillin | 102.2 | 92.3 |
18 | Pefloxacin | 98.5 | 99.2 | 38 | Sarafloxacin | 92.5 | 110.0 | 58 | Dicloxacillin | 101.6 | 110.6 |
19 | Danofloxacin | 91.2 | 98.3 | 39 | Nafcillin | 98.8 | 94.5 | 59 | Roxithromycin | 100.7 | 106.4 |
20 | Sulfadimethoxine | 103.6 | 97.6 | 40 | Clindamycin | 105.4 | 113.0 | 60 | Josamycin | 96.3 | 107.7 |