title: Investigation of the reaction of copper(I) with 2,9-dimethyl-1,10-phenanthroline at trace level by thermal lensing.
abstract: The stability constants for copper(I) chelate with 2,9-dimethyl-1,10-phenanthroline are determined by thermal lensing, and the advantages over spectrophotometric determination of stability constants are shown. Changes in the photometric reaction when moving from the microgram to the nanogram level of reactants are discussed. The conditions for the thermal-lens determination of copper are optimized. The limit of detection of copper is 3x10(-8) mol dm(-3), and the linear calibration range 1x10(-7)-1x10(-5) mol dm(-3).
authors.affiliation: Analytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, Vorob'evy Hills, GSP-2, Moscow 119992, Russia.
authors.forename: M A
authors.initials: MA
authors.lastname: Proskurnin
authors.forename: V V
authors.initials: VV
authors.lastname: Chernysh
authors.forename: S V
authors.initials: SV
authors.lastname: Pakhomova
authors.forename: M Yu
authors.initials: MY
authors.lastname: Kononets
authors.forename: A A
authors.initials: AA
authors.lastname: Sheshenev