Molecularly Imprinted Nanomicrospheres as Matrix Solid-Phase Dispersant Combined with Gas Chromatography for Determination of Four Phosphorothioate Pesticides in Carrot and Yacon
Table 2
Compared loading of four pesticides and iprobenfos by imprinted and nonimprinted polymers.
Pesticides
Sorbents
Initial solution (mg·L−1)
Final solution (mg·L−1)
(μg·g−1)
Tolclofos-methyl
Imprinted
5
3.75
166.7
2.2
2.8
385
Nonimprinted
5
4.52
53.1
0.8
Parathion-methyl
Imprinted
5
3.82
154.5
2.0
1.9
270
Nonimprinted
5
4.36
73.4
1.1
Chlorpyrifos
Imprinted
5
4.43
64.3
0.8
1.6
120
Nonimprinted
5
4.67
35.3
0.5
Phoxim
Imprinted
5
3.94
134.5
1.7
2.0
262
Nonimprinted
5
4.46
60.2
0.9
Iprobenfos
Imprinted
5
4.33
77.4
30
Nonimprinted
5
4.39
69.5
Four pesticides (phoxim, tolclofos-methyl, chlorpyrifos, and parathion-methyl).
