Solvent extraction-spectrophotometric determination of aliphatic amines with metanil yellow.

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Other Title
  • メタニルイエローを用いたアルキルアミン塩の溶媒抽出―比色定量法
  • メタニルイエロー オ モチイタ アルキルアミンエン ノ ヨウバイ チュウシュツ

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Description

The solvent extraction-spectrophotometric determination of aliphatic amines was developed using metanil yellow (MY) as an ion associating reagent. Dihexylammonium ion (DHAH+), trihexylammonium ion (THAH+) and monododecylammonium ion (MDAH+) form the stable ion associates with metanil yellow ion, which are extracted into chloroform. These ion associates give the absorption maximums at a wavelength of 402-407nm. The absorbance is little influenced by the existence of inorganic divalent cations other than Ba2+ ions. The molar absorptivities of these ion associates were as high as 2.48×104 2.62 × 104 1 mol-1 cm-1.<BR>It is considered that the capillary condensation of neutral molecules between the contact points of the particles take place in alkaline media in addition to normal adsorption of ionic and molecular species. This effect becomes remarkable with decrease of the particle size

Journal

  • Shigen-to-Sozai

    Shigen-to-Sozai 106 (6), 347-351, 1990

    The Mining and Materials Processing Institute of Japan

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