title: The design of an on-line flow injection system with a gravitational phase separator for flame atomic absorption spectrometry and its analytical performance.
abstract: A liquid-liquid flow extraction system associated with a specifically designed phase separator has been developed. A common trisectional confluence connector was used for segmentation. The system was connected on-line with a flame atomic absorption spectrometer. The performance of the system was studied with respect to determining copper and gold. The detection limits were 1 mug/l. for copper and 1.8 mu/1. for gold, and the precision was 1.8 and 2.5%, respectively, with medium signal enhancement factor 70 for gold, and 78 for copper. Analytical results of real sample analysis were in good agreement with certified values.
authors.affiliation: Department of Applied Chemistry, China University of Geosciences, Wuhan 430074, People's Republic of China.
authors.forename: S
authors.initials: S
authors.lastname: Lin
authors.forename: H
authors.initials: H
authors.lastname: Hwang