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Modification of Multiresidue QuEChERS Protocol to Minimize Matrix Effect and Improve Recoveries for Determination of Pesticide Residues in Dried Herbs Followed by GC-MS/MS

Łozowicka 0 Piotr Kaczyński 0 0 Laboratory of Pesticide Residues, Plant Protection Institute-National Research Institute , Chełmońskiego 22, 15-195 Białystok , Poland 1 Ewa Rutkowska An accurate, rapid, and ... ) funded by the Ministry of Science and Higher Education, Poland. Compliance with Ethical Standards Conflict of Interest Ewa Rutkowska declares that she has no conflict of interest. Bożena Łozowicka

Influence of QuEChERS modifications on recovery and matrix effect during the multi-residue pesticide analysis in soil by GC/MS/MS and GC/ECD/NPD

editor: Roland Kallenborn 2 Ewa Rutkowska A QuEChERS extraction followed by GC/MS/MS and GC-μECD/NPD for 216 pesticide and metabolites determination in soil simultaneously were developed and compared

The evaluation of a fast and simple pesticide multiresidue method in various herbs by gas chromatography

In this study two analytical methods, one based on matrix solid phase dispersion (MSPD) and the other on liquid–solid extraction (LSE), coupled with gas chromatography, were evaluated and used to determine the presence of 163 pesticides (6 acaricides, 62 fungicides, 18 herbicides and 77 insecticides) in various herbs. Both methods were optimized considering different parameters...

Daphnia populations in three interconnected lakes with roach as the principal planktivore

Data on two co-existing Daphnia species, D.cucullata (G.O.Sars) and D.hyalina (Leydig), from three neighboring and interconnected lakes in northern Poland, revealed an extremely confined range of population density fluctuations throughout summer in each of the two species in each of the three lakes, with D.cucullata being an order of magnitude more abundant than D.hyalina (mean...


POTENTIAL MARKER OF RECOVERY FROM SECONDARY HYPERPARATHYROIDISM AFTER KIDNEY TRANSPLANTATION Agnieszka Makówka1, Maciej GłYda2, Ewa Rutkowska-Majewska1 and Michał P. Nowicki1 1Medical University of ŁÓd