[Influence of organic modifier on the retention behaviour in soil leaching column chromatography].

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  • Author(s): Xu F;Xu F; Liang XM; Su F; Lin BC
  • Source:
    Se pu = Chinese journal of chromatography [Se Pu] 2000 Jan; Vol. 18 (1), pp. 5-9.
  • Publication Type:
    Journal Article
  • Language:
    Chinese
  • Additional Information
    • Source:
      Publisher: Hua xue za zhi she Country of Publication: China NLM ID: 9424804 Publication Model: Print Cited Medium: Print ISSN: 1000-8713 (Print) Linking ISSN: 10008713 NLM ISO Abbreviation: Se Pu Subsets: MEDLINE
    • Publication Information:
      Original Publication: Dalian Shi : Hua xue za zhi she
    • Subject Terms:
      Chromatography/*methods ; Organic Chemicals/*analysis ; Soil Pollutants/*analysis ; Water Pollutants/*analysis; Chlorobenzenes/analysis ; Environmental Monitoring/methods ; Methanol ; Polycyclic Aromatic Hydrocarbons/analysis
    • Abstract:
      The relationship between capacity factors (k') of 55 nonionic compounds and broad methanol volume percentage (psi) of methanol-water eluent in soil leaching column chromatography (SLCC) was systematically investigated. The compounds consist of 11 chlorobenzenes, 14 alkylbenzenes, 22 polyphenyls and polycyclic aromatic hydrocarbons, and 8 pesticides. Reference soil was dry-packed into a stainless steel chromatographic column (10 mm i.d. x 100 mm) by a homemade pressurizing device, and isocratic methanolwater mixture with psi from 0.0 to 0.80 eluated through the column at a flow-rate of 1 mL.min-1. The column was thermostated at (25.0 +/- 0.1) degree C, and chromatographic peak was monitored by an online ultraviolet detector. The results show that both equations, log k' = log k'w + a psi + b psi 2(1) and log k' = log k'w - S psi (2), well fit the retention values. Equation (2) can be used practically due to few experimental data needed and simpler in formula. Explanation is also given for the existence of the carbon (or chlorine) number rule for two classes of homologous series (i.e. methylbenzenes, n-alkylbenzenes) and weak-polar chlorobenzenes in the SLCC process. The slope and intercept of the rule are also well correlated, and both decreases linearly with increasing eluent psi value.
    • Accession Number:
      0 (Chlorobenzenes)
      0 (Organic Chemicals)
      0 (Polycyclic Aromatic Hydrocarbons)
      0 (Soil Pollutants)
      0 (Water Pollutants)
      Y4S76JWI15 (Methanol)
    • Publication Date:
      Date Created: 20030125 Date Completed: 20030808 Latest Revision: 20161124
    • Publication Date:
      20221213
    • Accession Number:
      12541443