Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification
12 pages, 5 tables, 6 figures.-- PMID: 18021786 [PubMed].-- Printed version published on Dec 28, 2007.
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | artículo biblioteca |
| Language: | English |
| Published: |
Elsevier
2007-10-30
|
| Subjects: | Pesticide residues, Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS), Tandem mass spectrometry (MS/MS), Pears, Fruits, Food safety, Non-target analysis, Accurate mass measurements, Unknown identification, Target quantification, |
| Online Access: | http://hdl.handle.net/10261/10251 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-idaea-es-10261-10251 |
|---|---|
| record_format |
koha |
| spelling |
dig-idaea-es-10261-102512009-02-04T16:36:27Z Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification Picó, Yolanda Farré, Marinella Soler, Carla Barceló, Damià Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification 12 pages, 5 tables, 6 figures.-- PMID: 18021786 [PubMed].-- Printed version published on Dec 28, 2007. Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) is an emerging technique offering more rapid and efficient separation, as well as the possibility to obtain accurate mass measurement and tandem mass spectrometry (MS/MS). This paper deals with the use of UPLC-QqTOF-MS to identify the pesticide residues present in complex pear extracts. Carbendazim, imazalil, and ethoxyquin were successfully identified because of the accurate mass determination of their protonated molecule and their major fragments in the product ion mass spectra. A few plastic and latex additives were also found, most of them probably coming from the packaging transfer to the fruits. The potential of the UPLC-QqTOF-MS and UPLC-QqTOF-MS/MS techniques as a quantification tool is also discussed taking imazalil as example. For quantification, calibration curves were linear over a dynamic range of 2 orders of magnitude, whereas higher calibration ranges are better adjusted to polynomial curves of second and third order. Quantification using different mass windows was also assessed. Accurate quantification required mass windows as wide as 20 mDa, narrower mass windows of 5 mDa provided erroneous quantification, probably because the low ion abundance. The mean recoveries and percentage relative standard deviation (RSD) of 35 determinations for imazalil were 76% (13% RSD) by MS and 77% (14% RSD) by MS/MS. The theoretical limit of detection was 0.4 μg kg−1, with a validated limit of quantification of 2 μg kg−1. The quantitative data obtained using UPLC-QqTOF-MS were compared with those obtained using conventional liquid chromatography (LC)-MS/MS with a triple quadrupole (QqQ). It was concluded that UPLC-QqTOF-MS might become a powerful analytical tool for both, unknown’s identification and quantification of target pesticides. This work was funded by the EU Project NOMIRACLE (no. 003956-2), by the Ministerio de Ciencia y Tecnología through the project CTM2006-26225-E and by this last one together with the European Regional Development Funds (ERDF) through project GCL2007-66687-C02-01/BOS. Peer reviewed 2009-02-04T09:28:51Z 2009-02-04T09:28:51Z 2007-10-30 artículo http://purl.org/coar/resource_type/c_6501 Journal of Chromatography A, 1176(1-2): 123-134 (2007) 0021-9673 http://hdl.handle.net/10261/10251 10.1016/j.chroma.2007.10.071 en http://dx.doi.org/10.1016/j.chroma.2007.10.071 none 19968 bytes application/msword Elsevier |
| institution |
IDAEA ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-idaea-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del IDAEA España |
| language |
English |
| topic |
Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification |
| spellingShingle |
Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification Picó, Yolanda Farré, Marinella Soler, Carla Barceló, Damià Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| description |
12 pages, 5 tables, 6 figures.-- PMID: 18021786 [PubMed].-- Printed version published on Dec 28, 2007. |
| format |
artículo |
| topic_facet |
Pesticide residues Ultra-high-performance liquid chromatography–quadrupole time-of-flight mass spectrometry (UPLC-QqTOF-MS) Tandem mass spectrometry (MS/MS) Pears Fruits Food safety Non-target analysis Accurate mass measurements Unknown identification Target quantification |
| author |
Picó, Yolanda Farré, Marinella Soler, Carla Barceló, Damià |
| author_facet |
Picó, Yolanda Farré, Marinella Soler, Carla Barceló, Damià |
| author_sort |
Picó, Yolanda |
| title |
Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| title_short |
Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| title_full |
Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| title_fullStr |
Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| title_full_unstemmed |
Identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry Imazalil as a case study of quantification |
| title_sort |
identification of unknown pesticides in fruits using ultra-performance liquid chromatography–quadrupole time-of-flight mass spectrometry imazalil as a case study of quantification |
| publisher |
Elsevier |
| publishDate |
2007-10-30 |
| url |
http://hdl.handle.net/10261/10251 |
| work_keys_str_mv |
AT picoyolanda identificationofunknownpesticidesinfruitsusingultraperformanceliquidchromatographyquadrupoletimeofflightmassspectrometryimazalilasacasestudyofquantification AT farremarinella identificationofunknownpesticidesinfruitsusingultraperformanceliquidchromatographyquadrupoletimeofflightmassspectrometryimazalilasacasestudyofquantification AT solercarla identificationofunknownpesticidesinfruitsusingultraperformanceliquidchromatographyquadrupoletimeofflightmassspectrometryimazalilasacasestudyofquantification AT barcelodamia identificationofunknownpesticidesinfruitsusingultraperformanceliquidchromatographyquadrupoletimeofflightmassspectrometryimazalilasacasestudyofquantification |
| _version_ |
1777669128516009984 |