Technetium(VII) sulfide colloid growing observed by laser-induced photoacoustic spectroscopy

Y. Saiki, M. Fukuzaki, T. Sekine, Y. Kino, H. Kudo

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4 Citations (Scopus)


Particle growing processes were investigated for technetium(VII) sulfide (Tc2S7) colloids produced in a mixture of Na2S and TcO4- solutions by laser-induced photoacoustic spectroscopy (LPAS). Analysis of the LPAS signal intensities indicated that the particle size increased in the solution with an increase of standing time, while the number of particles remained constant. It was revealed that the size of colloid particles increased by deposition of Tc2S7 on the particle surfaces, not by coagulation of colloid particles. The formation mechanism and growing process of the colloids are discussed based on the LaMer model, which deals with nucleation processes.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
JournalJournal of Radioanalytical and Nuclear Chemistry
Issue number1
Publication statusPublished - 2003 Jan 1

ASJC Scopus subject areas

  • Analytical Chemistry
  • Nuclear Energy and Engineering
  • Radiology Nuclear Medicine and imaging
  • Pollution
  • Spectroscopy
  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis


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