Preconcentration of Trace Metal Ions by Complexation with Ethylenediaminetriacetate-Bonded Silica Gel
- Resource Type
- Article
- Authors
- Ohshima, Katsuo; Watanabe, Hiroto; Haraguchi, Kensaku
- Source
- Analytical Sciences; April 1986, Vol. 2 Issue: 2 p131-135, 5p
- Subject
- Language
- ISSN
- 09106340; 13482246
Ethylenediaminetriacetate-bonded silica gel (ED3A-SG) was used for preconcentration of heavy metal ions prior to their determination by inductively coupled plasma-atomic emission spectrometry (ICP-AES). ED3A-SG was prepared by reacting silica gel with N-(trimethoxysilylpropyl)ethylenediaminetriacetate. Coastal seawater up to 2 dm3, buffered at pH 5.0, were passed through a column filled with 250 mg of ED3A-SG. Then the metal ions adsorbed were eluted with 10 cm3of 0.5 mol dm-3hydrochloric acid. The concentrate thus obtained was analyzed by ICP-AES.