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International Journal of Analytical Chemistry
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International Journal of Analytical Chemistry
/
2012
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Article
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Tab 10
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Research Article
Spectrophotometric Determination of Iron(II) and Cobalt(II) by Direct, Derivative, and Simultaneous Methods Using 2-Hydroxy-1-Naphthaldehyde-p-Hydroxybenzoichydrazone
Table 10
Tolerance limit of foreign ions (
μ
g mL
−1
).
Diverse ion
Zero order
Second derivative
Third derivative
Th(IV)
6
55
35
U(VI)
5
40
45
Mn(II)
5
60
20
Cu(II)
2
80
45
Ni(II)
<1
30
50
Zn(II)
<1
45
20
Sn(II)
<1
25
18
In(III)
<1
15
28
Ga(III)
<1
20
35
V(V)
<1
15
20