Please use this identifier to cite or link to this item: https://open.uns.ac.rs/handle/123456789/19295
Title: Determination of residues of sulfonylurea herbicides in soil by using microwave-assisted extraction and high performance liquid chromatographic method
Authors: Grahovac, Nada
Stojanović, Zorica 
Kravić, Snežana 
Orčić, Dejan 
Suturović, Zvonimir 
Kondić-Špika, Ankica
Vasin, Jovica
Šunjka, Dragana 
Jakšić, Snežana
Rajković, Miloš
Grahovac, Nenad 
Issue Date: 25-Sep-2017
Publisher: Belgrade: Association of the Chemical Engineers of Serbia
Journal: Hemijska Industrija
Abstract: © 2017, Association of Chemists and Chemical Engineers of Serbia. All rights reserved. A modified method for the analysis of nicosulfuron, rimsulfuron and prosulfuron was developed and validated by using microwave-assisted extraction (MAE) and ultra-performance liquid chromatography with diode array detection in the ultraviolet region (HPLC-UV- -DAD). The most important experimental parameters of extraction procedure and HPLC- -UV-DAD technique were optimised in respect to those sulfonylurea herbicides. High recoveries of the microwave-assisted extraction were obtained by using a dichloromethane– –acetonitrile mixture (2:1 volume ratio) acidified with acetic acid (0.8 vol.%) with the addition of urea. The mean recoveries at three spiking levels ranged from 97.47 to 98.76% for nicosulfuron, 97.88 to 99.17% for rimsulfuron and from 97.91 to 99.83% for prosulfuron. The limits of detection of nicosulfuron, rimsulfuron and prosulfuron were 0.95, 0.91 and 0.89 μg kg–1, respectively. The accuracy of the developed method was confirmed by HPLC coupled with tandem mass spectrometry parallel analyses. The developed method was used to investigate the dissipation dynamics of sulfonylurea herbicides in the real field trials in Vojvodina Province, Serbia. The obtained half-lives were 0.05, 0.23 and 0.15 days for recommended dose application of nicosulfuron, rimsulfuron and prosulfuron, respectively. Low residues and short half-life in soil suggested that the risk to sensitive rotational crops after application of those sulfonylurea herbicides is low when they are used in the appropriate dosages.
URI: https://open.uns.ac.rs/handle/123456789/19295
ISSN: 0367598X
DOI: 10.2298/HEMIND160224039G
(BISIS)109702
(BISIS)109702
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