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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 7
BKCSDE 21(7)
July 20, 2000 

Spectrophotometric Investigation of Silver Complex Solution with Thiomicher's Ketone
Hong-Wen Gao
The reaction between silver (I) and thiomicher's ketone (TMK) was sensitive at pH 5 and 8 in the presence of non-ionic or anion surfactant. We studied the complex solution and determined the properties by beta-correction spectrophotometry, which included the complex ratio and the stability constant of the complex. The results showed that complex Ag(TMK)2 was formed in the presence of alkylphend ethoxylates (emulsifier OP) and Ag(TMK)2 was formed in the presence of sodium dodecyl benzene sulfonate (SDBS). Their real absorptivities are as follows: εAg(TMK)540 = 5.23 x 10(4), εAg(TMK)2(555) = l.05 x 10(5) Lmol(-l)cm(-1) both at pH 5 and εAg(TMK)2(555) = 7,52 x 10(4)lmol(-1)cm(-1) at pH 8. The stability constant of complex Ag(TMK) was equal to 1.23 x 10(5) at pH 5 and that of Ag(TMK)2 8.29 x 10(9) at pH 5 and 1.15 x 10(11) at pH 8.
675 - 678
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