✦ LIBER ✦

Gold nanoparticles deposited capillaries for in-capillary microextraction capillary zone electrophoresis of monohydroxy-polycyclic aromatic hydrocarbons

✍ Scribed by Huiyong Wang; Gaston Knobel; Walter B. Wilson; Korina Calimag-Williams; Andres D. Campiglia

Publisher: John Wiley and Sons
Year: 2011
Tongue: English
Weight: 202 KB
Volume: 32
Category: Article
ISSN: 0173-0835
DOI: 10.1002/elps.201000516

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✦ Synopsis

Abstract

This article presents the first application of gold nanoparticles deposited capillaries as pre‐concentration devices for in‐capillary microextraction CZE and their use for the analysis of monohydroxy‐polycyclic aromatic hydrocarbons in synthetic urine samples. The successful separation of 1‐hydroxypyrene, 9‐hydroxyphenanthrene, 3‐hydroxybenzo[a]pyrene (3‐OHbap), 4‐hydroxybenzo[a]pyrene and 5‐hydroxybenzo[a]pyrene under a single set of electrophoretic conditions is demonstrated as well as the feasibility to obtain competitive ultraviolet absorption LOD with commercial instrumentation. Enrichment factors ranging from 87 (9‐OHphe) to 100 (3‐OHbap) made it possible to obtain LOD ranging from 9 ng/mL (9‐OHphe and 3‐OHbap) to 14 ng/mL (4‐hydroxybenzo[a]pyrene).

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