表 3.
35种农药的线性范围、相关系数、检出限、定量限、加标回收率和相对标准偏差(n=6)
| Pesticide | Linear range/ (μg/kg) |
r2 | LOD/ (μg/kg) |
LOQ/ (μg/kg) |
Recoveries (RSDs)/% | ||
|---|---|---|---|---|---|---|---|
| Low | Medium | High | |||||
| Demeton-O | 10-200 | 0.9996 | 2.4 | 8.1 | 101.5 (6.7) | 89.6 (4.2) | 88.9 (4.5) |
| Ethoprophos | 20-400 | 0.9991 | 1.5 | 5.1 | 102.0 (5.4) | 86.7 (3.8) | 86.9 (4.7) |
| Chlordimeform | 20-400 | 0.9994 | 2.7 | 9.1 | 78.8 (1.9) | 75.3 (5.3) | 82.6 (1.8) |
| Sulfotep | 20-400 | 0.9993 | 2.3 | 7.5 | 114.4 (3.5) | 107.0 (2.8) | 105.7 (4.7) |
| Phorate | 20-400 | 0.9997 | 3.1 | 10.3 | 107.0 (7.8) | 94.4 (4.4) | 93.5 (4.7) |
| α-Hexachlorocyclohexane | 50-1000 | 0.9993 | 2.0 | 6.6 | 123.1 (4.7) | 125.7 (2.6) | 111.1 (3.6) |
| Terbufos | 20-400 | 0.9993 | 3.4 | 11.2 | 91.5 (4.7) | 85.1 (4.1) | 87.3 (5.2) |
| Demeton-S | 10-200 | 0.9992 | 2.2 | 7.3 | 95.2 (3.6) | 84.0 (3.4) | 88.0 (6.0) |
| γ-Hexachlorocyclohexane | 50-1000 | 0.9993 | 0.6 | 1.9 | 119.1 (2.3) | 115.6 (6.4) | 116.0 (2.4) |
| Monocrotophos | 30-600 | 0.9990 | 3.6 | 12.0 | 71.3 (6.0) | 97.1 (7.5) | 120.7 (2.6) |
| Fipronil-desulfinyl | 20-400 | 0.9998 | 0.2 | 0.6 | 116.9 (3.8) | 89.6 (5.9) | 96.8 (1.4) |
| β-Hexachlorocyclohexane | 50-1000 | 0.9998 | 2.7 | 8.9 | 124.8 (4.8) | 116.4 (2.2) | 111.3 (3.1) |
| δ-Hexachlorocyclohexane | 50-1000 | 0.9997 | 1.1 | 3.8 | 105.4 (6.3) | 100.1 (3.0) | 116.3 (2.5) |
| Aldrin | 50-1000 | 0.9997 | 1.7 | 5.8 | 93.7 (5.1) | 85.3 (3.0) | 84.7 (5.6) |
| Parathion-methyl | 20-400 | 0.9994 | 2.5 | 8.3 | 87.5 (3.9) | 84.4 (3.0) | 85.5 (3.3) |
| Fipronil-sulfoxide | 20-400 | 0.9990 | 0.2 | 0.7 | 115.5 (8.2) | 115.2 (4.7) | 117.1 (6.9) |
| Dicofol | 50-1000 | 0.9997 | 0.4 | 1.4 | 118.5 (9.2) | 105.2 (2.5) | 109.4 (2.1) |
| Fipronil | 20-400 | 0.9996 | 2.8 | 9.4 | 101.6 (7.0) | 97.5 (3.7) | 99.4 (6.2) |
| Parathion | 50-1000 | 0.9991 | 3.3 | 11.0 | 126.9 (2.9) | 122.1 (1.4) | 116.4 (3.2) |
| 2,4'-Dicofol | 50-1000 | 0.9994 | 0.6 | 2.1 | 119.1 (3.6) | 122.0 (2.2) | 104.8 (1.6) |
| Isofenphos-methyl | 20-400 | 0.9992 | 0.3 | 1.1 | 112.0 (6.0) | 114.3 (4.6) | 111.0 (4.9) |
| Isocarbophos | 50-1000 | 0.9970 | 4.0 | 13.2 | 78.1 (6.7) | 95.5 (2.4) | 91.4 (1.7) |
| Fipronil-sulfone | 50-1000 | 0.9996 | 0.8 | 2.8 | 106.2 (6.4) | 93.3 (4.6) | 92.3 (2.9) |
| α-Endosulfan | 20-400 | 0.9999 | 0.9 | 3.1 | 81.9 (2.7) | 85.0 (3.4) | 81.0 (3.7) |
| p,p'-Dichlorodiphenyldichloroethylene | 50-1000 | 0.9999 | 0.5 | 1.8 | 84.2 (6.2) | 76.0 (5.0) | 73.5 (4.9) |
| Fenamiphos | 20-400 | 0.9992 | 1.6 | 5.2 | 88.0 (3.5) | 89.1 (5.3) | 81.8 (1.8) |
| Dieldrin | 50-1000 | 0.9999 | 2.3 | 7.8 | 102.5 (5.2) | 96.8 (3.3) | 93.1 (8.4) |
| Posfolan-methyl | 30-600 | 0.9991 | 4.4 | 14.7 | 88.1 (5.7) | 99.4 (3.3) | 100.2 (5.7) |
| Nitrofen | 50-1000 | 0.9995 | 1.2 | 4.1 | 69.8 (7.2) | 70.0 (1.6) | 69.6 (3.2) |
| o,p'-Dichlorodiphenyltrichloroethane | 50-1000 | 0.9999 | 2.3 | 7.6 | 95.0 (2.7) | 89.0 (4.4) | 85.8 (2.7) |
| p,p'-Dichlorodiphenyldichloroethane | 50-1000 | 0.9993 | 2.1 | 6.9 | 123.8 (3.6) | 118.4 (1.7) | 115.3 (2.2) |
| β-Endosulfan | 50-1000 | 0.9998 | 3.3 | 10.9 | 98.0 (5.5) | 95.5 (2.9) | 91.8 (2.0) |
| p,p'-Dichlorodiphenyltrichloroethane | 50-1000 | 0.9998 | 0.4 | 1.2 | 115.7 (4.7) | 110.8 (3.3) | 108.1 (1.1) |
| Endosulfan sulfate | 50-1000 | 0.9997 | 3.8 | 12.7 | 99.0 (7.3) | 104.4 (5.3) | 86.3 (3.8) |
| Coumaphos | 50-1000 | 0.9997 | 5.4 | 18.1 | 96.9 (6.0) | 93.0 (9.9) | 94.5 (2.5) |