title: [Chip-based capillary electrophoresis on-line coupled with atomic fluorescence spectrometry and its application to rapid speciation analysis].
abstract: Chip-based capillary electrophoresis (chip-CE) is under rapid progress due to its high efficiency, fast separation, little sample consumption and integration. Due to the short optical path (30-50 microm), the conventional UV absorbance cannot satisfy the chip detection needs. Atomic fluorescence spectrometer (AFS) is a selective and sensitive detector for hydride-forming elements. With the strong points of low cost and easy operation, AFS is attractive as an ideal detector of chip-CE for mercury, arsenic and selenium, etc. A few important practical aspects of coupling chip-CE to AFS are critically discussed. These include the design of the chip, chip-AFS interface, gas-liquid separator, AFS atomizer, and elimination of the effect of backpressure on separation. The application of the developed chip-CE-AFS to the mercury speciation analysis is highlighted.
authors.affiliation: Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.forename: Dong-dong
authors.initials: DD
authors.lastname: Wang
authors.forename: Xiu-ping
authors.initials: XP
authors.lastname: Yan
authors.forename: Rong-guo
authors.initials: RG
authors.lastname: Su
authors.forename: Jin-ming
authors.initials: JM
authors.lastname: Lin