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Flow Analysis Method Using Chelating CIM Monolithic Disks for Monitoring Dissolved Labile Copper in Environmental Water Samples

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posted on 2023-05-16, 20:06 authored by Tyrrell, EC, Nesterenko, PN, Brett PaullBrett Paull
A low pressure flow analysis system incorporating a chelating monolithic disc for the selective retention and elution of Cu(II) from within environmental samples, is reported. Three monolithic discs were modified with either picolinic acid, dipicolinic acid, or dodecyliminodiacetic acid and the extraction and elution efficiency of Cu(II) on the three chelating phases compared. The dipicolinic acid disc showed the highest capacity and linear range for Cu(II) and was incorporated into a flow analysis system, using chemiluminescence detection based on the measurement of light emitted from the Cu(II) catalysed oxidation of 1,10-phenanthroline by hydrogen peroxide. The system gave a linear response ( R 2 =0.998) over the concentration range 0-125 μg L -1 in simulated seawater, with detection limits for Cu(II) of 5 μg L -1 in a sample volume of just 220 μL. Accuracy was determined using a standard reference material (SRM 1640) and the method applied to estuary and coastal seawater samples. Copyright © Taylor & Francis Group, LLC.

History

Publication title

Journal of Liquid Chromatography & Related Technologies

Volume

29

Issue

15

Pagination

2201-2216

ISSN

1082-6076

Department/School

School of Natural Sciences

Publisher

Taylor & Francis Inc.

Place of publication

United States

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in the chemical sciences

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