Determination of herbicide residues in juice by matrix solid-phase dispersion and gas chromatography–mass spectrometry

• Published in: Journal of Chromatography A 2004-07, Vol.1043 (2), p.127-133
• Main Authors: Albero, B, Sánchez-Brunete, C, Donoso, A, Tadeo, J.L
• Format: Article
• Language: English
• Subjects: Analysis; Analytical biochemistry: general aspects, technics, instrumentation; Analytical chemistry; Analytical, structural and metabolic biochemistry; Beverages - analysis; Biological and medical sciences; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Extraction methods; Food industries; Fruit and vegetable industries; Fruit juices; Fundamental and applied biological sciences. Psychology; Gas Chromatography-Mass Spectrometry - methods; General pharmacology; Herbicides - analysis; Matrix solid-phase dispersion; Medical sciences; Pesticides; Pharmacology. Drug treatments; Reference Standards; Reproducibility of Results; Sensitivity and Specificity
• ISSN: 0021-9673
• DOI: 10.1016/j.chroma.2004.05.097

A rapid multiresidue method was developed for the determination of 15 herbicides in carrot, grape, and multivegetable juices. The analytical procedure was based on the matrix solid-phase dispersion of juice samples on Florisil, placed in glass columns, and subsequent extraction with ethyl acetate with assisted sonication. The recoveries through the method ranged from 82 to 115% with relative standard deviations equal or lower than 10% for all the herbicides studied. The analysis of samples was accomplished using gas chromatography–mass spectrometry with selected ion monitoring. Spiked blank samples were used as standards to counteract the matrix effect observed in the chromatographic determination. The detection limits ranged from 0.1 to 1.6 μg/l. The developed method was applied to the analysis of herbicide residues in commercial juice samples.