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SORPTION FOR CHEMICAL SPECIATION OF TRACES OF TOXIC HEAVY METALS IN WATER

Research Project

Project/Area Number 61550556
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field 工業分析化学
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

HIRAIDE MASATAKA  FACULTY OF ENGINEERING, NAGOYA UNIVERSITY, 工学部, 講師 (20111833)

Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1987: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1986: ¥1,200,000 (Direct Cost: ¥1,200,000)
KeywordsWater Analysis / Chemical Speciation / Sorption / Coprecipitation-Flotation / Macroreticular Sorbents / Humic Complexes / Heavy Metals / 陸水 / フミン物質
Research Abstract

Traces of heavy metals may exist in fresh waters in a variety of physicochemical forms, which will exhibit different geochemical behavior and biological effects. Metal-humic and -fulvic acid complexes are among the typical and important species, whose determination requires preconcentration. In the present work, a macroreticular nonionic resin Amberlite XAD-2 is pulverized and treated with indium ions to saturate its cation-exchangeable sites. Inorganic cations and anions, EDTA complexes and colloidal hydrated metal oxides are not retained on the column at all. The humic complexes sorbed on the column are ultrasonically desorbed with nitric aicd and determined by graphite-furnace atomic absorption spectrometry.
A coprecipitation-flotation technique is applied to the preconcentration of humic acid at the g/1 level. Humic acid is coprecipitated with iron(III) hydroxide and floated to the solution surface with anionic surfactants and nitrogen bubbles. The precipitate is separated and dissolved in hydrochloric acid. The acid-insoluble humic acid is filtered off on an ultrafilter and dissolved in an alkaline solution for measurements of absorption spectra, molecular weight distribution and complexing ability. Further, chemical species of iron in fresh waters were examined in detail by using synthetic water samples.

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] 水池敦: Tracer. 11. 2-6 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 平出正孝: 分析化学. 36. 219-221 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S.Mori: Anal.Chim.Acta. 193. 231-238 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] M.Hiraide: Anal.Chim.Acta. 200. 171-179 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] M.Hiraide: Mikrochim.Acta. (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] A. MIZUIKE: "RADIOCHEMICAL SEPARATION BY THE COPRECIPITATION-FLOTATION TECHNIQUE" TRACER. 11. 2-6 (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] M. HIRAIDE: "PRECONCENTRATION OF HUMIC ACID IN WATER BY COPRECIPITATION-FLOTATION WITH IRON(III) HYDROXIDE FOLLOWED BY ULTRAFILTRATION" BUNSEKI KAGAKU. 36. 219-221 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] S. MORI: "AQUEOUS SIZE-EXCLUSION CHROMATOGRAPHY OF HUMIC ACIDS ON A SEPHADEX GEL COLUMN WITH DILUTED PHOSPHATE BUFFERS AS ELUENTS" ANAL. CHIM. ACTA. 193. 231-238 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] M. HIRAIDE: "SEPARATION AND DETERMINATION OF TRACES OF HEAVY METALS COMPLEXED WITH HUMIC SUBSTANCES IN RIVER WATERS BY SORPTION ON INDIUMTREATED AMBERLITE XAD-2 RESIN" ANAL. CHIM. ACTA. 200. 171-179 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] M. HIRAIDE: "RAPID SEPARATION OF HUMIC ACID IN FRESH WATERS BY COPRECIPITATION AND FLOTATION" MIKROCHIM. ACTA. (in press). (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 平出正孝: 分析化学. 36. (1987)

    • Related Report
      1986 Annual Research Report
  • [Publications] Masataka Hiraide: Anal.Chim.Acta.

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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