Document Type
Patent
Publication Date
November 2009
Patent Number
7622191
Abstract
A method is presented describing in situ preparation of the titania-based sol-gel PDMS coating and its immobilization on the inner surface of a fused silica microextraction capillary. Sol-gel titania-poly (dimethylsiloxane) (TiO2-PDMS) coating was developed for capillary microextraction (CME) to perform on-line preconcentration and HPLC analysis of trace impurities in aqueous samples. The sol-gel titania-based coatings demonstrated strong pH stability and enhanced extraction capability over other commercially availble GC coatings. Extraction characteristics of a sol-gel titania-PDMS capillary remained practically unchanged after continuous rinsing with a 0.1 M NaOH solution (pH=13) for 12 hours.
Application Number
11/161,005
Recommended Citation
Malik, Abdul and Kim, Tae-Young, "Titania-based coating for capillary microextraction" (2009). USF Patents. 576.
https://digitalcommons.usf.edu/usf_patents/576
Assignees
University of South Florida
Filing Date
07/19/2005
Primary/U.S. Class
428/432
