Online solid phase preconcentration using EGDMA-MAA copolymer for lead determination by FAAS
Küçük Resim Yok
Tarih
2009
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A Ethylene glycol dimethacrylate (EGDMA) methacrylic acid (MAA) resin was used for preconcentration of lead at trace levels in water samples. For this purpose, a flow-injection, solid phase extraction method was developed for the determination of lead by flame atomic absorption spectrometry. Lead ions were sorbed on a EGDMA-MAA column at pH 4, followed by an elution step using 288?L of 4.0 M nitric acid solution and determination by flame atomic absorption spectrometry. Optimum conditions for quantitative sorption involving the pH, sample volume, loading and elution flow rates, eluent type, and volume were investigated. A 868-fold enrichment factor could be reached. The detection limit for the water samples, estimated from the noise on the signal obtained for 250 mL of 10?gL-1 loaded at 4.9mL min-1 was 1.04?g L-1. The method was applied for lead determination in river water samples collected in Edirne, Turkey. Recoveries of spike solutions (10 ?gL-1) to river water samples were quantitative. Finally, the method was validated by the analysis of certified reference material SRM 2704 (Buffalo River Sediment). © 2009 Taylor & Francis.
Açıklama
Anahtar Kelimeler
Flow-Injection; Lead; Preconcentration; Solid Phase Extraction, Buffalo River; Certified Reference Materials; Detection Limits; Eluent Type; Enrichment Factors; Ethylene Glycol Dimethacrylate; Flame Atomic Absorption Spectrometry; Flow-Injection; Lead Determination; Lead Ions; Methacrylic Acids; Nitric Acid Solutions; Optimum Conditions; Preconcentration; River Water Samples; Sample Volume; Solid Phase Extraction; Solid Phase Extraction Method; Solid-Phase; Trace Level; Water Samples; Absorption; Absorption Spectroscopy; Acids; Atomic Absorption Spectrometry; Ethylene; Ethylene Glycol; Lead; Metal Recovery; Nitric Acid; Resins; Rivers; Extraction; Adsorption; Atomic Absorption Spectroscopy; Cation; Detection Method; Ester; Experimental Study; Extraction Method; Lead; Model Validation; Organic Acid; Ph; Polymer; Resin; River Water; Signal-To-Noise Ratio
Kaynak
Toxicological and Environmental Chemistry
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
91
Sayı
7
