In the performance of the analysis by the threshold values for the lowest concentration that can be detected (LOD) and the lower threshold value in quantity (LOQ) of iron is equal to the portion of the ppm and 1.4741 0.4423 calcium is equal to 2, and 0.6357.1155 ppm, respectively. To find the percent return of iron is equal to 99.96% best value per cent return calcium to 99.44%, which is the accepted benchmark.
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