Amperometric detection for capillary flow injection analysis

J Wang; L Chen

doi:10.1016/0039-9140(95)01420-g

Amperometric detection for capillary flow injection analysis

Talanta. 1995 Mar;42(3):385-9. doi: 10.1016/0039-9140(95)01420-g.

Authors

J Wang¹, L Chen

Affiliation

¹ Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, NM 88003, U.S.A.

PMID: 18966241
DOI: 10.1016/0039-9140(95)01420-g

Abstract

Ultrasmall-volume measurements of oxidizable compounds have been accomplished by coupling a capillary flow injection system with amperometric detection. Remarkably low (femtomole) mass detection limits result from the combination of nanoliter sample volume and the inherent sensitivity of the wall-jet detector. A substantial economy of reagent consumption and disposal accrues from the operation of the nl/min flow regime. Variables influencing the physical dispersion in the capillary flow injection system, including capillary length, sample volume or flow rate, are explored and optimized.