• P-ISSN1225-0163
  • E-ISSN2288-8985
  • SCOPUS, ESCI, KCI

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  • P-ISSN 1225-0163
  • E-ISSN 2288-8985

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    Extraction of Water-Soluble Porphyrin and Metalloporphyrins into Acetonitrile by Salting-out

    Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
    1995, v.8 no.4, pp.511-517
    Tabata, Masaaki
    Kumamoto, Midori
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    Abstract

    A cationic water soluble porphyrin (5,10,15,20-tetrakis (l-methyl-pyridinium-4-yl)porphyrin, <TEX>$H_2tmpyp^{4+}$</TEX>) and its metalloporphyrins (MP) were easily extracted into acetonitrile separated by addition of sodium chloride (<TEX>$4mol\;dm^{-3}$</TEX>) in the presence of sodium perchlorate, where M denotes <TEX>$Zn^{2+}$</TEX>, <TEX>$Cu^{2+}$</TEX>, <TEX>$Co^{3+}$</TEX>, <TEX>$Fe^{3+}$</TEX>, and <TEX>$Mn^{3+}$</TEX> and <TEX>$P^{2-}$</TEX> is porphyrinate ion. The extracted ion-pair complexes were completely dissociated to <TEX>$[MP(ClO_4)_3]^+$</TEX>, and <TEX>$[MP(ClO_4)_2]^{2+}$</TEX>. The extraction and the dissociation constants were determined by taking into account of the partition constant of sodium perchlorate (<TEX>$K_D

    keywords
    Salting-out, Acetonitrile, <TEX>$E_{T(30)}$</TEX>, Porphyrin, Ion-pair complex, Solvent extraction


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