- 作者: --
- 作者服務機構: Department of Chemistry, Islamic Azad University, Shahrood Branch, Shahrood, Iran
- 中文摘要: A highly selective, facile and reliable method for separation and preconcentration of the trace amounts of lead present in aqueous samples is introduced. By passing the solutions through an octadecyl silica membrane disk modified by a novel Schiff’s base, Pb2+ ions are adsorbed quantitatively while almost all interfering ions pass through the disk. The retained lead(II) ions are then eluted from the disk surface by a minimal amount of organic eluents. The influences of pH, sample flow-rates and interfering ions are also investigated. The proposed method permits an enrichment factor of about 500 or higher and a detection limit of 0.0065 ng mL-1.
- 英文摘要: --
- 中文關鍵字: Lead(II); Schiff’s base; Solid phase extraction; Flame atomic absorption spectrometry.
- 英文關鍵字: --