Research Article
Cloud Point Extraction for the Determination of Trace Amounts of Cobalt in Water and Food Samples by Flame Atomic Absorption Spectrometry
Table 1
Effects of the foreign ions on the recoveries of the Co(II) ion (
).
| | Interfering ions | Interfering ion/analyte fold ratio
(w/w) | Recovery/% |
| | K(I) | 1000 | 101.4 | | Na(I) | 1000 | 99.3 | | Mg(II) | 1000 | 103.8 | | Ca(II) | 1000 | 96.2 | | Mn(II) | 200 | 98.7 | | Pb(II) | 200 | 100.6 | | Cu(II) | 20 | 97.6 | | Zn(II) | 20 | 95.6 | | Ba(II) | 100 | 96.0 | | Ni(II) | 100 | 95.2 | | Fe(III) | 10 | 96.3 |
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