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 4
Efficiency of Ch-CuO NPs in adsorption of different pesticides using solid phase extraction cartridge technique.
Pesticides
Removal () SE at three levels of concentration (mg/L)
Active ingredient () found in water SE
Total found ()
(Extracted in methanol / acetonitrile)
(Remaining in water sample)
10
50
100
10
50
100
10
50
100
Abamectin
98.02
94.74
92.31
0.00
2.53
3.94
98.02
97.27
96.25
Diazinon
70.15
34.21
21.44
18.89
19.05
23.81
89.04
53.27
45.25
Fenamiphos
95.33
93.28
90.44
4.03
4.67
7.31
99.36
97.94
97.76
Imidacloprid
93.78
90.39
72.91
5.80
8.16
25.96
99.58
99.75
98.87
Lambda-cyhalothrin
98.44
95.14
92.66
0.00
0.00
0.00
98.44
95.14
92.66
Methomyl
77.15
70.17
63.85
20.55
25.00
33.37
97.70
95.16
97.22
Thiophanate-methyl
84.75
78.91
74.62
5.14
8.19
22.47
89.89
87.10
97.09
The values lower than 100% mean the nonextracted amount of pesticide from Ch-CuO NPs. 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).
