Preliminary evaluation of SEM/EDS technique for the determination of colloid diffusion coefficient in granite matrix

Tsuey Lin Tsai, Yu Hung Shih, Liang Cheng Chen, Shih Chin Tsai, I. Hsien Lee, Chuan Pin Lee, Te Yen Su

Research output: Contribution to journalArticlepeer-review

Abstract

Colloids present high sorption for many solutes and are considered potential contaminant carriers in geological environments. Experimental quantitative data are required for an adequate description of colloid-mediated transport within natural media. In this paper, the line scan function of SEM/EDS was firstly applied to study colloid diffusion by depth profile in crystalline rock and the apparent diffusion coefficient was estimated to be ~ 6E−18 m2/s for 20 nm gold colloids. This technique can be applied to the prediction of colloid-facilitated radionuclide transport through water-saturated fractured porous rock for safety assessment of geological disposal for high-level radioactive waste.

Original languageEnglish
Pages (from-to)1803-1808
Number of pages6
JournalJournal of Radioanalytical and Nuclear Chemistry
Volume322
Issue number3
DOIs
Publication statusPublished - 2019 Dec 1

All Science Journal Classification (ASJC) codes

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

Fingerprint

Dive into the research topics of 'Preliminary evaluation of SEM/EDS technique for the determination of colloid diffusion coefficient in granite matrix'. Together they form a unique fingerprint.

Cite this