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Journal of Chemistry
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2013
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Article
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Tab 6
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Research Article
2-Hydroxy-1-naphthaldehyde-P-hydroxybenzoichydrazone: A New Chromogenic Reagent for the Determination of Thorium(IV) and Uranium(VI)
Table 6
Tolerance limits of foreign ions. [Th(IV)-HNAHBH] system.
Foreign ion
Tolerance limit (in folds)
Zero order
Second derivative
Cu(II)
5
25
Ni(II)
<1
20
Co(II)
<1
18
Zn(II)
<1
22
Bi(III)
<1
12
Fe(II)
<1
45
Al(III)
<1
60
U(VI)
<1
35
In(III)
<1
30
Ga(III)
<1
40