Analysis of Dechlorane Plus and related compounds in gull eggs by GC-HRMS using a novel atmospheric pressure photoionization source
| Autor: | Francisco Javier Santos, Encarnación Moyano, Silvia Lacorte, J.F. Ayala-Cabrera |
|---|---|
| Přispěvatelé: | Ministerio de Ciencia, Innovación y Universidades (España) |
| Rok vydání: | 2021 |
| Předmět: |
Gull eggs
Eggs 02 engineering and technology Photoionization Orbitrap Mass spectrometry 01 natural sciences Biochemistry Gas Chromatography-Mass Spectrometry Analytical Chemistry law.invention Birds Charadriiformes chemistry.chemical_compound law Gas chromatography-high-resolution mass spectrometry Hydrocarbons Chlorinated Animals Atmospheric pressure photoionization Polycyclic Compounds Detection limit Chromatography Atmospheric pressure Chemistry 010401 analytical chemistry Polyatomic ion Reproducibility of Results Dechlorane plus Photochemical Processes 021001 nanoscience & nanotechnology 0104 chemical sciences Atmospheric Pressure Mass spectrum Environmental Pollutants Dechlorane Plus 0210 nano-technology Chromatography Liquid Environmental Monitoring Spanish Natural Parks |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 1618-2650 1618-2642 2018-0950 |
| Popis: | Here, a new gas chromatography-atmospheric pressure photoionization-high-resolution mass spectrometry (GC-APPI-HRMS) method combined with selective pressurized liquid extraction (sPLE) has been developed for the selective determination of Dechlorane Plus (DP) and its related compounds in gull egg samples used as a bioindicator of contamination. To the best of our knowledge, this is the first time these compounds have been analyzed by GC-MS using atmospheric pressure photoionization (APPI). Negative ion dopant-assisted APPI using vapors of diethyl ether and a source temperature of 250 °C provided high ionization efficiencies and mass spectra characterized by intense in-source fragment ions as well as the presence of molecular ion and characteristic cluster ions containing oxygen atoms in their chemical structure. This made it possible to improve the selectivity in the determination of these compounds compared to that obtained with traditional GC-MS ion sources. Under optimized conditions, the sPLE GC-APPI-HRMS (Orbitrap) method provided high recoveries (> 91%), good precisions (RSD% This work received financial support from the Spanish Ministry of Science, Innovation and Universities under the project PGC2018-095013-B-I00 and PID2019-105732GB-C21, as well as the Generalitat of Catalonia under the project 2017-SGR-310 and the Spanish Autonomous Organism of National Parks under the project 2012/768. Juan F. Ayala-Cabrera received PhD fellowship from the Spanish Ministry of Education, Culture and Sports (FPU14/05539). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|