eCite Digital Repository

Automatic determination of copper by in-syringe dispersive liquid僕iquid microextraction of its bathocuproine-complex using long path-length spectrophotometric detection

Citation

Horstkotte, B and Alexovic, M and Maya, F and Duarte, CM and Andruch, V and Cerda, V, Automatic determination of copper by in-syringe dispersive liquid-liquid microextraction of its bathocuproine-complex using long path-length spectrophotometric detection, Talanta, 99 pp. 349-356. ISSN 0039-9140 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 Elsevier B.V.

DOI: doi:10.1016/j.talanta.2012.05.063

Abstract

The recently proposed concept of automatic in-syringe dispersive liquid-liquid microextraction was successfully applied to the determination of copper in environmental water samples. Bathocuproine was added to the organic phase as a selective reagent, resulting in the formation of a complex with copper. Dispersion was achieved by aspiration of the organic phase and then the watery phase into the syringe as rapidly as possible. After aggregation of the solvent droplets at the head of the syringe, the organic phase was pushed into a liquid waveguide capillary cell for highly sensitive spectrophotometric detection. The entire analytical procedure was carried out automatically on a multisyringe flow-injection analysis platform and a copper determination was accomplished in less than 220s. A limit of detection of 5nmolL−1 was achieved at an extraction efficiency >90% and a preconcentration factor of 30. A linear working range for concentrations of up to 500nmolL−1 and an average standard deviation of 7% in peak height were found. The method proved to be well-suited for the determination of copper in water samples, with an average analyte recovery of 100.6%.

Item Details

Item Type:Refereed Article
Keywords:flow analysis, liquid-liquid extraction, dispersive liquid-liquid microextraction, multisyringe flow injection analysis, copper, bathocuproine, liquid waveguide capillary cell
Research Division:Chemical Sciences
Research Group:Analytical Chemistry
Research Field:Flow Analysis
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Chemical Sciences
UTAS Author:Maya, F (Mr Fernando Maya Alejandro)
ID Code:127865
Year Published:2012
Web of Science® Times Cited:54
Deposited By:Chemistry
Deposited On:2018-08-19
Last Modified:2018-09-11
Downloads:0

Repository Staff Only: item control page