title: Catalytic polarographic determination of total selenium in tea leaves.
abstract: The catalytic polarographic determination of selenium(IV) by use of the SeSO(2-)(3) -KIO(3) system is sensitive, accurate, rapid and requires only small quantities of sample. The detection limit for selenium(IV) is 0.04 ng/ml in the final solution. The working range of the calibration is 0.04-2.5 ng/ml. Se(VI) present can be reduced with hot hydrochloric acid to Se(IV), allowing determination of the total selenium.
authors.affiliation: Department of Chemistry, Suzhou University, Suzhou 215006, People's Republic of China.
authors.forename: X
authors.initials: X
authors.lastname: Liu
authors.forename: Y
authors.initials: Y
authors.lastname: Tu
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: L
authors.initials: L
authors.lastname: Zhu
authors.forename: H
authors.initials: H
authors.lastname: Liu
authors.forename: H
authors.initials: H
authors.lastname: Yu
authors.forename: Y
authors.initials: Y
authors.lastname: Ding
authors.forename: Y
authors.initials: Y
authors.lastname: Ren