Quantitative Photoacoustic Reaction-Rate Measurements Under Microcomputer Control

Quantitative photoacoustic reaction-rate measurements under microcomputer control are demonstrated by the reaction of lysine and leucine with ninhydrin in a starch matrix. Coground amino acid/starch standards are analyzed in 200 seconds using initial reaction-rate conditions with a percent relative standard deviation generally better than 20% for 0.1 - 3.7 wt% standards. A single analysis requires approximately 10 mg of sample and 40 (mu)1 of ninhydrin reagent. The implications of this new photoacoustic application are the potential analysis of proteins in grain samples as well as other quantitative surface measurements. Non-kinetic quantitative data for tris-(2,2'-bipyridyl)-ruthenium(II) ion-exchanged into a 13X zeolite are also presented. A calibration curve for the ruthenium chromophore was prepared by cogrinding tris-(2,2'-bipyridyl)-ruthenium(II) dichloride hexahydrate with various amounts of 600 mesh 13X zeolite. Percent relative standard deviations from 1-8% for 0.2 - 2.7 wt% ruthenium salt concentrations were obtained. In addition, a quantitative calibration curve for samarium oxide was prepared by simply mixing controlled particle size distributions of samarium oxide and barium sulfate.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Chemistry

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Bross, Phillip Ralph

• Chemistry, Analytical

Language dc:language

eng

Identifier

(UMI)AAI8114392

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/67255