M. C. Yebra, N. Carro, A. Moreno-Cid, L. Puig
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引用次数: 7
Abstract
A simple field-flow preconcentration system has been developed for lead determination in seawater. Seawater samples are collected in situ by passing them with a pump through minicolumns packed with poly(aminophosphonic acid) chelating resin to retain and preconcentrate lead, and remove the saline matrix. Minicolumns loaded with lead are then returned to the laboratory where they are inserted into a flow-injection system and eluted with a small volume of hydrochloric acid into the nebulizer-burner system of a flame atomic absorption spectrometer. The detection limit for lead in seawater was 2.8 ng l−1. This procedure was applied to the determination of lead in seawater samples from Galicia (Spain). © 2001 John Wiley & Sons, Inc. Field Analyt Chem Technol 5: 239–243, 2001
小柱现场取样-流动注射-原子吸收光谱法测定海水中铅
研制了一种简单的场流富集法测定海水中的铅。海水样品是通过泵通过填充有聚氨基膦酸螯合树脂的小型柱来就地收集的，以保留和预浓缩铅，并去除盐水基质。然后，装载铅的微型柱被送回实验室，在那里它们被插入流动注射系统，并用少量盐酸洗脱，进入火焰原子吸收光谱仪的雾化器燃烧器系统。海水中铅的检出限为2.8 ng l−1。本方法应用于西班牙加利西亚海水样品中铅的测定。©2001 John Wiley &儿子,Inc。化学工程学报，2009,29 (5):379 - 379
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