Journal of Analytical Methods in Chemistry / 2016 / Article / Tab 1 / Research Article
Employing Solid Phase Microextraction as Extraction Tool for Pesticide Residues in Traditional Medicinal Plants Table 1 % recoveries and their standard deviations (mean ± SD) after analysis of spiked blank samples. The precision of the method calculated as % RSD for four measurements of each sample.
Mean recoveries 7 ng g−1 % RSD 25 ng g−1 RSD 40 ng g−1 RSD 70 ng g−1 RSD α -HCH90.87 ± 6.26 6.89 91.46 ± 8.06 8.82 92.07 ± 10.72 11.64 94.47 ± 3.16 3.28 HCB 83.79 ± 9.01 10.76 81.54 ± 10.48 12.86 86.46 ± 3.95 4.56 89.59 ± 10.21 12.11 β -HCH76.62 ± 8.05 10.50 81.90 ± 9.57 11.69 87.03 ± 11.29 12.97 113.92 ± 15.44 12.82 Aldrin 85.36 ± 10.96 12.84 91.46 ± 5.46 5.97 91.56 ± 4.48 4.89 95.35 ± 6.32 6.14 Heptachlor 81.82 ± 3.76 4.60 99.28 ± 13.33 13.43 98.70 ± 5.81 5.89 101.77 ± 4.72 4.69 o,p-DDE 74.76 ± 6.50 8.69 88.78 ± 9.01 10.15 101.94 ± 5.96 5.85 102.03 ± 5.74 5.52 α -Endosulfan75.97 ± 11.96 15.74 103.21 ± 4.71 4.56 105.01 ± 11.43 10.89 107.36 ± 6.66 6.55 p,p-DDE 75.80 ± 8.78 11.24 97.98 ± 12.76 13.02 98.39 ± 3.37 3.43 105.96 ± 2.56 2.41 Dieldrin 75.04 ± 8.41 11.58 93.01 ± 9.88 10.63 97.60 ± 9.88 10.12 107.25 ± 11.90 11.68 Endrin 93.43 ± 5.27 5.64 95.68 ± 8.22 8.59 106.34 ± 5.38 5.06 107.07 ± 5.56 5.53 β -Endosulfan69.58 ± 7.20 10.35 95.76 ± 10.04 10.49 110.59 ± 5.58 4.86 112.74 ± 1.34 1.19 p,p-DDD 82.78 ± 8.87 10.72 98.45 ± 5.26 5.35 99.44 ± 8.06 8.11 102.56 ± 8.23 8.02 o,p-DDT 103.71 ± 8.62 8.31 100.40 ± 11.27 11.23 101.04 ± 6.55 6.48 102.95 ± 5.54 4.90 p,p-DDT 76.39 ± 13.73 17.97 89.66 ± 7.54 8.41 98.84 ± 5.57 5.64 98.36 ± 12.82 13.03