Development of a Solid-Phase Extraction (SPE) Cartridge Based on Chitosan-Metal Oxide Nanoparticles (Ch-MO NPs) for Extraction of Pesticides from Water and Determination by HPLC
Table 7
Enrichment factor (EF) of Ch-Si MNPs for adsorption of different pesticides from water sample.
Pesticides
EF ± SE of Ch-MO NPs at three levels of pesticide concentrations (g/mL)
10
50
100
Mean ± SE
10
50
100
Mean ± SE
10
50
100
Mean ± SE
Ch-CuO NPs
Ch-ZnO NPs
ODS (Supelco)
Abamectin
8.22
9.47
8.51
8.73
8.28
9.31
8.54
8.71
8.19
9.58
4.43
7.40
Diazinon
5.24
2.74
1.75
3.24
7.04
6.10
5.93
6.36
7.42
7.71
7.17
7.43
Fenamiphos
7.56
7.35
7.24
7.38
7.55
7.35
6.98
7.29
6.68
6.16
6.28
6.37
Imidacloprid
7.39
7.60
5.12
6.70
7.64
8.22
6.22
7.36
6.32
4.59
2.19
4.37
Lambda-cyhalothrin
7.87
10.80
7.31
8.66
7.93
11.13
7.45
8.83
7.37
8.18
4.08
6.54
Methomyl
9.34
5.64
4.31
6.43
5.02
3.10
2.47
3.53
4.89
2.27
1.58
2.91
Thiophanate-methyl
6.76
6.32
5.97
6.350.19
7.23
4.85
4.81
5.63
6.30
6.03
5.94
6.09
Values are mean of three replicates and are given as mean ± standard error. Different letters in the same column indicate significant differences according to Student-Newman-Keuls (SNK) test (P≤0.05).
