title: Liquid core waveguide spectrophotometry for the sensitive determination of nitrite in river water samples.
abstract: A flow injection analysis system was built with a liquid core waveguide spectrophotometric detector using an 80 cm Teflon AF-1600 capillary tube (2,2-bistrifluoromethyl-4,5-difluoro-1,3-dioxole/tetrafluoroethylene). The system was applied to determine nitrite ion in river water samples. The lower limit of detection for nitrite was 2.1 nmol dm(-3) (0.1 ng dm(-3) as NO(2)(-)) and the relative standard deviation of measurements was typically 0.56% (n = 5) at 0.21 micromol dm(-3).
authors.affiliation: Department of Chemistry, Faculty of Engineering, Gunma University, 1-5-1 Tenjin-cho, Kiryu 376-8515, Japan.
authors.forename: Hiromi
authors.initials: H
authors.lastname: Takiguchi
authors.forename: Azusa
authors.initials: A
authors.lastname: Tsubata
authors.forename: Makoto
authors.initials: M
authors.lastname: Miyata
authors.forename: Tamao
authors.initials: T
authors.lastname: Odake
authors.forename: Hiroki
authors.initials: H
authors.lastname: Hotta
authors.forename: Tomonari
authors.initials: T
authors.lastname: Umemura
authors.forename: Kin-ichi
authors.initials: K
authors.lastname: Tsunoda