Katarzyna Czaja

Dr. Katarzyna Czaja

orcid

Research Focus & Metrics

Academic Career Length

35Years (1992-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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15 May 2014 in Pest Management Science
Verified
Journal Article
Closed access
PDF file
KCKatarzyna Czaja
Katarzyna Czaja
KGKatarzyna Goralczyk
Katarzyna Goralczyk
PSPaweł Struciński
Paweł Struciński
AHAgnieszka Hernik
Agnieszka Hernik
WKWojciech Korcz
Wojciech Korcz
JLJan K Ludwicki
Jan K Ludwicki

1 January 2015 in Environment International
Verified
Journal Article
Closed access
JLJan K. Ludwicki
Jan K. Ludwicki
KGKatarzyna Goralczyk
Katarzyna Goralczyk
PSPaweł Struciński
Paweł Struciński
BWBogdan Wojtyniak
Bogdan Wojtyniak
RRRabczenko Rabczenko
Rabczenko Rabczenko
JBJens Peter Ellekilde Bonde
Jens Peter Ellekilde Bonde

1 November 2015 in Science of The Total Environment
Verified
Journal Article
Closed access
KGKatarzyna Goralczyk
Katarzyna Goralczyk
KPKrzysztof A. Pachocki
Krzysztof A. Pachocki
AHAgnieszka Hernik
Agnieszka Hernik
PSPaweł Struciński
Paweł Struciński
KCKatarzyna Czaja
Katarzyna Czaja
JLJan K. Ludwicki
Jan K. Ludwicki


1 March 2020 in Food and Chemical Toxicology
Verified
Journal Article
Closed access
KCKatarzyna Czaja
Katarzyna Czaja
PSPaweł Struciński
Paweł Struciński
WKWojciech Korcz
Wojciech Korcz
MMMaria Minorczyk
Maria Minorczyk
AHAgnieszka Hernik
Agnieszka Hernik
BWBożena Wiadrowska
Bożena Wiadrowska

14 January 2023 in Molecules
Verified
Journal Article
Open access
PDF file
RLRadosław Lewiński
Radosław Lewiński
AHAgnieszka Hernik
Agnieszka Hernik
MLMonika Liszewska
Monika Liszewska
BBBrian Buckley
Brian Buckley
KCKatarzyna Czaja
Katarzyna Czaja
PSPaweł Struciński
Paweł Struciński
Honey is considered to be a health-promoting food product. Therefore, it is assumed that it should be free of contaminants. Although the use of organochlorine pesticides (OCPs) was banned a few decades ago in developed countries, persistent organic pollutants (POPs) are still detected in various environmental and biological matrices, including food. These contaminants exhibit toxic properties and bioaccumulate in some food chains. The validation of a modified QuEChERS extraction method was successfully performed for o,p’-DDT, o,p’-DDE, o,p’-DDD, p,p’-DDT, p,p’-DDE, p,p’-DDD, heptachlor and dieldrin. 2,2′,4,4′,5,5′-hexachlorobiphenyl (PCB 153) was used as an internal standard. The modification involved changing the solvent from acetonitrile to n-hexane after extraction. Quantitation was carried out using gas chromatography with an electron capture detector (µECD). The mean recovery values for o,p’-DDT, o,p’-DDE, o,p’-DDD, p,p’-DDT, p,p’-DDE, p,p’-DDD and dieldrin, spiked at 2.9 ng/g and 20 ng/g, ranged from 64.7% to 129.3%, and, for heptachlor spiked at 5.6 ng/g and 20 ng/g, ranged from 68.0% to 88.3%. The relative standard deviation (RSD) for these concentrations did not exceed 20%, and the within-laboratory reproducibility was below 20%, except o,p’-DDE and p,p’-DDT, which were 25.2% and 20.7%, respectively. This modified QuEChERS extraction method for selected organochlorine compounds was demonstrated as effective for routine testing in honey.