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Table 3 Potentiometric determination of Cd(II) ion using the proposed modified electrode

From: Selective and sensitive determination of Cd(II) ions in various samples using a novel modified carbon paste electrode

Samples   [Hg(II)] (μg L−1)
Taken Cd(II)-CPE ICP-OES
Found Recovery (%) RSD (%) Found Recovery (%) RSD (%)
River water 5.0 4.945 98.9 0.948 5.01 100.2 1.125
7.5 7.395 98.6 0.211 7.448 99.3 1.005
Industrial wastewater 5.0 4.915 98.3 0.708 4.970 99.4 0.104
7.5 3.358 98.1 0.512 7.432 99.1 1.006
Rechargeable battery waste 5.0 4.895 97.9 0.197 4.985 99.7 1.125
7.5 7.313 97.5 0.221 7.418 98.9 1.256
Plant foodstuff (carrot) 5.0 4.910 98.2 0.194 4.995 99.9 1.258
7.5 7.313 97.5 0.198 7.665 102.2 1.369
Fish tissue 5.0 4.915 98.3 1.004 4.96 99.2 1.024
7.5 7.380 98.4 1.215 7.59 101.2 1.257