Polarography of lead itaconate complexes.
The complexation of lead ions with itaconic acid (H(2) A) has been studied polarographically at 30 degrees . At pH < pK(1), the complex species Pb(HA)(+) was identified. At pK(1) < pH < pK(2) and pH > pK(2) the formation of Pb(A) and Pb(A)(2)(2-) respectively, was confirmed. The dissociation constant of Pb(A)(2)(2-) was found to be 8.3 x 10(-5). The electrode reactions were established.
Lai
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Analytical Chemistry Laboratory, Cheng Kung University, Tainan, Taiwan, China.
Chen
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SN
Lin
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