title: Measurement of sugars using the laser spray technique with a gold capillary.
abstract: A gold (Au) capillary has higher thermal conductivity than a stainless steel capillary and can withstand capillary over-heating induced by high CO(2) laser irradiation (over 2.5 W) better than a stainless steel capillary. For this study, a laser spray using an Au capillary was applied for the detection of sugars. The signal of cationized compounds [M+Na](+) can be detected with higher sensitivity than with conventional laser sprays using high laser power (over 2.7 W). Using 3.5 W of laser power, the signal intensity is 15 times higher than the maximum value with stainless steel (2.3 W) in a 10(-5) M maltose aqueous solution. It is considered that almost all the water molecules evaporate by laser irradiation, which is impossible to achieve using a stainless steel capillary.
authors.affiliation: Clean Energy Research Center, University of Yamanashi, Takeda-4, Kofu 400-8511, Japan. atsushit@tmu.ac.jp
authors.forename: Atsushi
authors.initials: A
authors.lastname: Takamizawa
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Maeda
authors.forename: Shizuka
authors.initials: S
authors.lastname: Kambara
authors.forename: Hiroko
authors.initials: H
authors.lastname: Furuya
authors.forename: Kenzo
authors.initials: K
authors.lastname: Hiraoka