Multiinstrument study of the electrophoretic mobility of quartz

Marek Kosmulski, Edward Ma̧czka, Władysław Janusz, Jarl B. Rosenholm

Research output: Contribution to journalArticleScientificpeer-review

43 Citations (Scopus)


The electrophoretic mobility of quartz in 0.01 mol dm-3 NaCl and NaNO3 over the pH range 2-8 was studied using five different commercial instruments. The mobilities over the pH range 4-8 were relatively consistent, but the mobilities over the pH range 2-4 and the position of the isoelectric point IEP varied from one instrument to another. This result suggests that the discrepancies in the apparent IEP of quartz (and other silicas) reported in the literature are due to the instrument artifacts. © 2002 Elsevier Science (USA).
Original languageEnglish
Pages (from-to)99-103
Number of pages5
JournalJournal of Colloid and Interface Science
Issue number1
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed


  • Electric double layer
  • Isoelectric point
  • Quartz
  • Silicon IV oxide
  • Zeta potential


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