Analysis of pesticide residues in tea using accelerated solvent extraction with in-cell cleanup and gas chromatography tandem mass spectrometry. Issue 7 (6th March 2015)

• Record Type: Journal Article
• Authors: Kadir, Haslina Abdul; Abas, Faridah; Zakaria, Osman; Ismail, Intan Safinar; Lajis, Nordin H.
• Is Part Of: Analytical methods. Volume 7:Issue 7(2015)
• Page Start: 3141
• Page End: 3147
• Publication Date: 2015-03-06
• Subjects: Chemistry, Analytic -- Periodicals; Analytical biochemistry -- Periodicals; Chemical laboratories -- Standards -- Periodicals; 543.1905
• DOI: 10.1039/c4ay03053b
• Languages: English
• ISSNs: 1759-9660

Abstract

Abstract : A fast, simple and easily automated method was developed for the simultaneous determination of pesticide residues in tea using accelerated solvent extraction (ASE) with in-cell cleanup and gas chromatography-tandem mass spectrometry (GC-MS/MS). Abstract : A fast, simple and easily automated method was developed for the simultaneous determination of pesticide residues in tea using accelerated solvent extraction (ASE) with in-cell cleanup and gas chromatography-tandem mass spectrometry (GC-MS/MS). This method integrates extraction and cleanup processes into a single step, by adding a clean-up sorbent along with the sample into the extraction cell. The efficiency of this method was characterized in terms of its recovery (with values ranging from 90 to 98%), repeatability along with intermediate precision (showing relative standard deviations less than 15%), and sensitivity (providing detection limits between 0.001 and 0.007 μg g −1 ). The concentration range of the pesticide residues found in the sample is from 0.008 to 0.161 μg g −1 . The relative expanded uncertainty achieved for this method ranged from 24% to 34%. The results indicate that the proposed method is easy and reliable for the determination of pesticide residues in tea, and it is suitable for use in routine analysis.