Determination of organophosphate pesticides in sea and surface water with ultrasound-assisted dispersive liquid–liquid micro-extraction coupled to GC-MS/MS analysis. Issue 9 (15th July 2017)

• Record Type: Journal Article
• Authors: Habedank, Friederike; Abraham, Marion; Tardel, Helmar; Feldhusen, Frerk; Schulz-Bull, Detlef E.
• Is Part Of: International journal of environmental analytical chemistry. Volume 97:Issue 9(2017)
• Page Start: 819
• Page End: 830
• Publication Date: 2017-07-15
• Subjects: Organophosphate pesticides -- GC-MS/MS -- micro-extraction -- sea water -- surface water; Ecology -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental chemistry -- Periodicals; Pollution -- Periodicals; 577.14
• DOI: 10.1080/03067319.2017.1361944
• Languages: English
• ISSNs: 0306-7319

Abstract

ABSTRACT: A sensitive enrichment method for the detection and quantification of 20 organophosphate pesticides in sea water and surface water was improved and validated. The compounds were extracted using ultrasound-assisted dispersive liquid–liquid microextraction and were analysed with an optimised Gas Chromatography - Tandem Quadrupole Mass Spectrometry (GC-MS/MS) method. Calibrations and validations were conducted for spiked local pond and Baltic Sea water. Recoveries of the organophosphate compounds from the different matrices ranged from about 25% to 70% and from 30% to 130% for pond and sea water, respectively. Obtained limit of detection (LoD) for both matrices was about 3 ng L −1 and the limit of quantification ( k = 3) was 12 and 7 ng L −1 for pond and sea water, respectively. Valid extractability at the LoD level could be proven.