Uptake of cadmium by synthetic mica and apatite: Observation by micro-PIXE

Naofumi Kozai, Toshihiko Ohnuki, Sridhar Komarneni, Tomihiro Kamiya, Takuro Sakai, Masakazu Oikawa, Takahiro Satoh

Research output: Contribution to journalConference article

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Abstract

This study investigated the uptake of Cd by a mixture containing equal mass of two powerful sorbents for Cd, a synthetic mica named 'Na-4-mica' and an apatite, by micro-particle-induced X-ray emission (micro-PIXE) analysis. Divalent Cd ions were found to be selectively taken up by the apatite from the mixture even though it has one order of magnitude lower distribution coefficient for Cd2+ than Na-4-mica. This was mainly attributed to the fact that the kinetics of uptake by the apatite were more rapid than those by Na-4-mica. Regarding the uptake of Cd colloids containing hydroxides and carbonates, no clear selectivity for solid phases was observed and Cd colloids appeared to be preferentially taken up by smaller particles of solid phases.

Original languageEnglish (US)
Pages (from-to)513-518
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume210
DOIs
StatePublished - Sep 1 2003
Event8th International Conference on Nuclear Microprobe Technology - Takasaki, Japan
Duration: Sep 8 2002Sep 13 2002

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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