Dispersive Liquid-Liquid Microextraction of Silver Prior to Determination by Microsample Introduction-Flame Atomic Absorption Spectrometry

作者：Jafarvand Sanaz; Bidari Araz; Hemmatkhah Payam; Hosseini Mohammad Reza Milani; Assadi Yaghoub^*

来源：Analytical Letters, 2009, 42(14): 2214-2231.

DOI：10.1080/00032710903137400

• Dispersive liquid-liquid microextraction
• flame atomic absorption spectrometry
• microsample introduction
• silver
• water analysis

A new simple and sensitive method has been proposed for rapid determination of trace levels of silver in environmental water samples, using dispersive liquid-liquid microextraction (DLLME) prior to its microsample introduction-flame atomic absorption spectrometry. Under the optimum conditions, the linear range was 0.1-7 mu g L(-1) and limit of detection was 0.018 mu g L(-1). The relative standard deviation for 0.50 and 5.00 mu g L(-1) of silver in water sample was 4.0 and 1.7%, respectively. The relative recoveries of silver from tap, well, river, and seawater samples at spiking levels of 1.00 and 5.00 mu g L(-1) were in the range of 86.4-98.6%.

• 出版日期2009