Journal of Analytical Methods in Chemistry / 2017 / Article / Tab 4

Research Article

High-Sensitivity Determination of K, Ca, Na, and Mg in Salt Mines Samples by Atomic Emission Spectrometry with a Miniaturized Liquid Cathode Glow Discharge

Table 4

t-test and p values between the analytical results obtained by LCGD-AES and IC.


() values
K40.90 ()443.57 ()15.73 ()832.08 ()
Ca1.71 (0.09)3.22 (0.02)1.77 (0.62)1.52 (0.10)
Na2.28 (0.23)1.01 (0.15)0.29 (0.11)1.03 (0.25)
Mg1.61 (0.05)2.22 (0.11)9.26 (0.01)5.55 (0.01)

values of t95%> 2.78 (with a confidence interval of 95%) and indicated that there was a significant difference between IC and LCGD-AES.

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