Simple Moment Analysis for a Kinetic Study of the Chromatographic Behavior of Spherical Particles and Silica Monoliths

• MIYABE Kanji

  Department of Chemistry, Faculty of Science, Rikkyo University

抄録

A simple procedure of moment analysis was proposed for a kinetic study of the rate processes in the columns packed with full-porous spherical particles and silica monoliths. Previous chromatographic data measured in reversed-phase HPLC systems using Mightysil and Chromolith columns were analyzed by a simple moment analysis. The surface of the packing materials is chemically modified with octadecyl alkyl ligands. A mixture of methanol and water (80/20, v/v) and alkylbenzene homologous series (C₆H₅C_nH_2n+1, n = 0 – 7) were used as the mobile-phase solvent and sample probes, respectively. More detailed information about the experimental conditions is provided in Supporting Information. The values of the intra-stationary phase diffusivity (D_e) and the surface diffusion coefficient (D_s), derived by the simple moment analysis, were almost the same as those by the conventional moment analysis. The simple moment analysis is effective for quantitative studies of mass transfer in chromatographic systems. The previous chromatographic data were also analyzed by assuming external porosity (ε_e) as typical values, i.e., 0.40 for spherical particles and 0.70 for silica monoliths. The resulting values of D_e and D_s were of the same order of magnitude as those derived by using ε_e experimentally measured. Even if ε_e is assumed to be typical values, the simple moment analysis is effective for preliminary studies of the mass-transfer kinetics in the columns.

収録刊行物

• Analytical Sciences

  Analytical Sciences 37 (4), 593-598, 2021-04-10

  社団法人 日本分析化学会

キーワード

• Moment analysis
• first absolute moment
• second central moment
• rate theory
• mass transfer kinetics
• intra-stationary phase diffusivity
• surface diffusion coefficient
• spherical particles
• silica monolith
• column external porosity

詳細情報

• CRID: 1390006198877070720
• NII論文ID: 130008023554
• NII書誌ID: AA10500785
• DOI: 10.2116/analsci.20p331
• ISSN: 13482246
• ISSN: 09106340
• NDL書誌ID: 031399642
• PubMed: 33041310
• Web Site: http://id.ndl.go.jp/bib/031399642
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031399642
• Web Site: https://link.springer.com/content/pdf/10.2116/analsci.20P331.pdf
• Web Site: https://link.springer.com/article/10.2116/analsci.20P331/fulltext.html
• Web Site: https://www.jstage.jst.go.jp/article/analsci/37/4/37_20P331/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • PubMed
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可