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Related Experiment Video

Updated: Jul 14, 2026

Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

Clean Sampling and Analysis of River and Estuarine Waters for Trace Metal Studies

Published on: July 1, 2016

Multivariate optimization of solid-phase extraction applied to iron determination in finished waters.

P Vanloot¹, B Coulomb, C Brach-Papa

¹Laboratoire de Chimie et Environnement, FRE2704, Université de Provence - CNRS, Aix-Marseille I, 3 Place Victor Hugo, Case 29, 13331 Marseille Cedex 3, France.

|July 3, 2007

Summary

A new salicylic acid-functionalized resin was developed for on-line iron determination in water. This solid-phase extraction method achieves high iron recovery rates and a low detection limit for accurate analysis.

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Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

Experimental Column Setup for Studying Anaerobic Biogeochemical Interactions Between Iron (Oxy)Hydroxides, Trace Elements, and Bacteria

Published on: December 19, 2017

Area of Science:

Analytical Chemistry
Environmental Chemistry

Background:

Accurate iron determination in aqueous samples is crucial for environmental monitoring and water quality assessment.
Existing methods may lack efficiency or require complex sample preparation.

Purpose of the Study:

To synthesize and characterize a novel Amberlite XAD-4 resin functionalized with salicylic acid.
To develop and optimize an on-line solid-phase extraction (SPE) system for the determination of iron (Fe(III)) in aqueous samples.

Main Methods:

Synthesis and characterization of salicylic acid-functionalized Amberlite XAD-4 resin.
Development of an on-line SPE system for iron preconcentration.
Optimization of SPE parameters using factorial design and Doehlert matrix.
Iron determination via vis-spectrophotometry using the CAS method.

Main Results:

The developed SPE method achieved over 90% iron recovery rates.
The method demonstrated a low detection limit of 2.3 µg/L for iron.
Precision (relative standard deviation) ranged from 9.3% to 2.8% for iron concentrations of 10.0–150 µg/L.
Successful application in real water samples from a treatment unit.

Conclusions:

The novel functionalized resin provides an effective material for on-line iron determination.
The optimized SPE-spectrophotometric method is suitable for accurate and sensitive iron analysis in aqueous samples.
This approach offers a robust solution for water quality monitoring.