Table 2.
The ZEN recoveries from using the ICA method in the spiked samples.
| Sample | Spiked (ng/g) | Dilution Times | Visualization a | Digitization (ng/g) | Quantitative Recovery ± SD (%, n = 5) b |
|---|---|---|---|---|---|
| Corn | 0 | 10 | − | ND c | ND |
| 3 | − | 3.4 | 113.3 ± 4.2 | ||
| 20 | ± | 18.6 | 93.0 ± 3.9 | ||
| 50 | + | 59.3 | 118.6 ± 5.5 | ||
| Wheat | 0 | 10 | − | ND | ND |
| 3 | − | 2.6 | 86.7 ± 4.6 | ||
| 20 | ± | 22.4 | 112.0 ± 3.7 | ||
| 50 | + | 45.2 | 90.4 ± 5.8 | ||
| Feed | 0 | 10 | − | ND | ND |
| 3 | − | 3.1 | 103.3 ± 4.9 | ||
| 20 | ± | 23.3 | 116.5 ± 6.2 | ||
| 50 | + | 56.4 | 112.8 ± 3.1 |
a The visual detection was based on the ZEN levels: <5 ng/g (−), 5 ng/g ≤ ZEN concentration < 30 ng/g (±); >30 ng/g (+). b Each value is the mean of three replicates. c Not detected.