关键词:
摘要: Sample pretreatment methods, such as separation and/or preconcentration prior to the determination of metal ions have developed rapidly due increasing need for accurate and precise measurements at extremely low levels in diverse matrices. This review covers new sorbents including microorganisms nanomaterials used solid-phase extraction from various sample A literature survey last three years (2005-2007) offering a critical these available use trace enrichment is provided. To keep focus on sorbents, some papers relating well-known activated carbon are excluded.