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Table 4 Determination of iron (III) amount of real samples using standard addition technique

From: Potentiometric sensor for iron (III) quantitative determination: experimental and computational approaches

SampleAmount added (ppm)Concentration of Fe3+ ions (ppm)Recovery (%)
ISE methodaAAS methoda
Drinking tap water< Limit of detection< Limit of detectionN/A
5.005.21 ± 0.325.08 ± 0.11102.5
10.0010.03 ± 0.1910.13 ± 0.1599.0
15.0015.32 ± 0.4115.25 ± 0.42100.4
25.0025.39 ± 0.2425.10 ± 0.28101.1
40.0039.85 ± 0.3640.37 ± 0.1798.7
Treated hospital waste water14.11 ± 0.2113.73 ± 0.21102.7
10.0023.85 ± 0.3423.52 ± 0.32101.4
20.0033.21 ± 0.1933.84 ± 0.2298.1
30.0043.79 ± 0.3543.44 ± 0.36100.8
  1. aAverage and standard deviation for triplet measurements