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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Determination of halosulfuron-methyl herbicide in sugarcane juice and tomato by capillary electrophoresis-tandem mass spectrometry

Full text
Author(s):
Daniel, Daniela [1] ; dos Santos, Vagner Bezerra [2] ; Rajh Vidal, Denis Tadeu [2] ; do Lago, Claudimir Lucio [2]
Total Authors: 4
Affiliation:
[1] Agilent Technol, BR-06455000 Barueri, SP - Brazil
[2] Univ Sao Paulo, Inst Quim, Dept Quim Fundamental, BR-05508000 Sao Paulo - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Food Chemistry; v. 175, p. 82-84, MAY 15 2015.
Web of Science Citations: 16
Abstract

A capillary electrophoresis-tandem mass spectrometry (CE-MS/MS) method for the determination of halosulfuron-methyl (HSU) residue in samples of sugarcane juice and tomato is introduced and validated. The samples were submitted to a QuEChERS extraction procedure followed by electrophoretic separation in NH4HCO3 electrolyte (adjusted to pH 8.5) and detection by electrospray-tandem mass spectrometry. The total HSU migration took place in less than 3.5 min, and the detection was accomplished by monitoring three fragmentation processes of this anion: m/z 435-182, 139, and 83. The R-2 values for concentrations up to 100 ppb (mu g kg(-1)) were, respectively, 0.992, 0.992, and 0.978. Recovery values for samples spiked at three concentration levels (10, 20 and 50 ppb) were in the range of 96-104% with standard deviation not greater than 5.0%. The limit of detection for HSU in sugarcane juice and tomato was 2 ppb for both samples. (C) 2014 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 11/02156-2 - The use of capillary electrophoresis with contactless conductivity detection for obtaining analytical and physicochemical parameters of peroxycarbonate, peroxyacids, and monoethyl pyrocarbonate.
Grantee:Denis Tadeu Rajh Vidal
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/14993-1 - Characterization and quantification of monoalkyl carbonates in aqueous medium employing microfluidic devices coupled to a mass spectrometer
Grantee:Vagner Bezerra dos Santos
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 12/06642-1 - Formation and properties of adducts of organic hydroxy-compounds with carbonate in aqueous medium and biological conditions
Grantee:Claudimir Lucio Do Lago
Support Opportunities: Regular Research Grants