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RSDEVRelative Standard Deviation
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It is also reasonably precise and accurate, as the amount taken from identical samples is known and the amount found by the above procedure does not exceed the relative standard deviation 0.35 % which is the replicate of five determinations.
SD RSD% RE% 50 54.58 1.82 3.33 9.16 100 93.86 6.13 6.53 6.14 200 182.18 5.10 2.80 8.91 400 430.96 28.60 6.64 7.74 800 775.96 21.59 2.78 3.01 1600 1567.60 42.44 2.71 2.03 DS: Diclofenac sodium, IS: Internal standard, SD: Standard deviation, RSD%: Percent relative standard deviation, RE%: Percent relative error Table 3.
The relative standard deviation (R.S.D) for 50 and 300 ng mL-1 of Cu2+ were 3.8% and 1.4% (n=7), respectively.
The results showed the recovery ranged from 70.8% to 99.0% and 83.5% to 86.4% with the relative standard deviations of 2.1% to 7.9% and 7.0% to 10.0% in Changsha and Nanning soil samples, respectively.
LC retention time, linearity of standard calibration curves, validation by regression coefficient, relative standard deviation (RSD, %), limit of detection (LOD; pmol on column) of the method are shown.
Percentage relative standard deviation (RSD%) as precision and percentage relative error (RE%) as accuracy of the suggested method were calculated (Table 1).
The percent relative standard deviation for area response found for acetone at LOD concentration is 7.1 and LOQ is 3.5 and for isopropyl alcohol at LOD concentration is 5.2 and LOQ is 3.7.
In this case, the model predicts that the return to capital relative to output is as volatile as seen in the data; the relative standard deviation in both cases is 6.3.
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