Research Article
Detection of Organophosphorus Pesticides in Wheat by Ionic Liquid-Based Dispersive Liquid-Liquid Microextraction Combined with HPLC
Table 2
Analysis of wheat samples in three different years.
| | Compounds | Spike level (g/g) | Wheat in 2002 | Wheat in 2006 | Wheat in 2010 | | RR (%) | RSD (%) () | RR (%) | RSD (%) () | RR (%) | RSD (%) () |
| | Fenitrothion | 1 | 94.6 | 4.8 | 106.8 | 0.8 | 99.5 | 4.2 | | 5 | 106.9 | 3.4 | 112.5 | 3.4 | 100.0 | 3.7 | | 50 | 74.8 | 1.5 | 72.9 | 0.7 | 83.3 | 2.8 | | Fenthion | 1 | 71.8 | 1.1 | 90.2 | 4.2 | 98.3 | 3.4 | | 5 | 76.9 | 3.7 | 74.7 | 1.8 | 104.5 | 3.1 | | 50 | 82.7 | 4.2 | 74.9 | 2.8 | 87.5 | 3.0 | | Phoxim | 1 | 115.5 | 2.3 | 106.7 | 3.9 | 106.9 | 1.0 | | 5 | 83.8 | 3.2 | 101.6 | 5.2 | 102.3 | 0.8 | | 50 | 108.3 | 1.8 | 85.4 | 3.4 | 84.1 | 3.5 |
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