Voltammetric Determination of Aclonifen at a Silver Amalgam Electrode in Drinking and River Water
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Date
2017
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
SOC ECOLOGICAL CHEMISTRY & ENGINEERING
Abstract
A method for the determination of pesticide Aclonifen (AC) in drinking and river water by differential
pulse voltammetry (DPV) on a meniscus modified silver solid amalgam electrode (m-AgSAE) using solid phase
extraction (SPE) as a cleanup and preconcentration procedure is described. The limit of detection (LOD) for direct
DPV determination of AC in deionized water is 2.7·10
–8 mol·dm–3
. LOD for DPV determination of AC in tap
water after SPE is 1.6·10–10 mol·dm–3
, the recovery being 55%. LOD for the determination of AC in Vltava river
water is 1.9·10–9 mol·dm–3, the recovery being 65%. Humic acids interfere with the determination in river water;
this problem can be resolved by adjusting the pH of the extracted sample to 6. The advantages of this approach are
high sensitivity, low LOD, quick and easy sample preparation and fast determination.
Description
Subject(s)
aclonifen, silver solid amalgam electrode, drinkin g water, river water, solid phase extraction
Citation
ISSN
1898-6196