Search results for: Renata Gadzała-Kopciuch

Items from 1 to 20 out of 30 results

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Dzieje Komitetu Chemii Analitycznej w 70-leciu Polskiej Akademii Nauk

Irena Staneczko-Baranowska, Renata Gadzała-Kopciuch, Bogusław Buszewski

Analityka : nauka i praktyka > 2022 > nr 2 > 58--64

Komitet Chemii Analitycznej PAN jest jednym z 12 komitetów naukowych PAN. Powołany został w 1975 roku, jednak swoją historię datuje już od 1955 roku, kiedy to utworzono Komisję Analityczną przy Komitecie Nauk Chemicznych Polskiej Akademii Nauk.

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Mleko kobiece - nowe rozwiązania analityczne w badaniach nad zanieczyszczeniami oraz substancjami biologicznie aktywnymi

Martyna Pajewska-Szmyt, Renata Gadzała-Kopciuch, Bogusław Buszewski

Analityka : nauka i praktyka > 2021 > nr 4 > 14--17

Artykuł na podstawie rozprawy doktorskiej pt.: 'Wpływ zanieczyszczeń środowiskowych na jakość mleka matki. Opracowanie innowacyjnych sorbentów i kropek kwantowych jako narzędzie analityczne w przygotowaniu próbek' nagrodzonej przez Komitet Chemii Analitycznej PAN w 2021 roku w konkursie na najlepsze prace doktorskie, nagroda ufundowana przez firmę Perlan Technologies.

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Nowe kierunki badań i wyzwania w analizie leków heparynowych

Radosław Sadowski, Dominika Krysztofiak, Renata Gadzała-Kopciuch, Bogusław Buszewski

Wiadomości Chemiczne > 2021 > [Z] 75, 7-8 > 935--942

The complexity of the structure of heparin anticoagulants requires appropriate sample preparation to be able to perform the analysis correctly. This stage of the analytical procedure is the most time-consuming and has a key impact on the obtained information. Therefore, it is important to improve the current and search for new solutions for the preparation of samples of anticoagulants as well as the...

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Propozycje innowacyjnych sorbentów w przygotowaniu próbek biologicznych

Martyna Pajewska-Szmyt, Renata Gadzała-Kopciuch, Bogusław Buszewski

Wiadomości Chemiczne > 2021 > [Z] 75, 7-8 > 1075--1088

The sample preparation stage is a critical step in the whole analytical procedure as it often determines the efficiency of the process. What is particularly noticeable in the area of biological samples. Blood, milk, urine, saliva or tissue are only few examples of complicated biological matrix, that require a optimization of sample pre-treatment method for particular analytes. For these purpose, the...

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Cytokiny - ich właściwości, izolowanie i identyfikacja

Anna Kuźniewska, Renata Gadzała-Kopciuch, Bogusław Buszewski

Analityka : nauka i praktyka > 2021 > nr 1 > 24--29

W oznaczaniu cytokin należy uwzględnić wiele czynników wpływających na ich zawartość, takich jak czas przechowywania próbki, pora, o jakiej pobrano próbkę, sposób karmienia czy silny stres matki karmiącej.

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Qualitative analysis of enzymatic and chemical depolymerized low molecular weight heparins by UHPLC coupled with electrospray ionization quadrupole time‐of‐flight‐mass spectrometry

Radosław Sadowski, Renata Gadzała‐Kopciuch, Bogusław Buszewski

Journal of Separation Science > 43 > 15 > 3036 - 3044

Complete heparin digestion with heparin lyase I and II results in a mixture of hexasaccharides and tetrasaccharides with 3‐O‐sulfo group‐containing glucosamine residues at their reducing ends. Because these tetrasaccharides are derived from antithrombin III‐binding sites of heparin, we examined whether this method could be applied to estimate the anticoagulant activity of heparin. Therefore, this...

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Molecularly imprinted polymer film grafted from porous silica for efficient enrichment of steroid hormones in water samples

Karolina Czarny, Dominik Szczukocki, Barbara Krawczyk, Renata Juszczak, more

Journal of Separation Science > 42 > 17 > 2858 - 2866

Steroid hormones as endocrine disrupting compounds can interfere with the functioning of hormonal systems of organisms and thus affect the health and reproduction of humans and wildlife. Unfortunately, these types of harmful endocrine disrupting compounds have been found in a variety of environmental samples at very low concentrations. Therefore, a simple, fast, and efficient method for enrichment...

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QuEChERS extraction coupled to GC-MS for a fast determination of polychlorinated biphenyls in breast milk from Polish women

Martyna Pajewska-Szmyt, Elena Sinkiewicz-Darol, Urszula Bernatowicz-Łojko, Tomasz Kowalkowski, more

Environmental Science and Pollution Research > 2019 > 26 > 30 > 30988- 30999

Polychlorinated biphenyls (PCBs) in breast milk has been determined. Therefore, it was necessary to develop and adapt an analytical method to analyze PCB compounds. The whole procedure was applied to 31 breast milk samples, which were collected from Polish mothers. The QuEChERS method was optimized as a fast and cheap sample preparation method. The procedure allowed us to obtain recovery values between...

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The impact of environmental pollution on the quality of mother's milk

Martyna Pajewska-Szmyt, Elena Sinkiewicz-Darol, Renata Gadzała-Kopciuch

Environmental Science and Pollution Research > 2019 > 26 > 8 > 7405-7427

Breastfeeding is a gold standard of neonate nutrition because human milk contains a lot of essential compounds crucial for proper development of a child. However, milk is also a biofluid which can contain environmental pollution, which can have effects on immune system and consequently on the various body organs. Polychlorinated biphenyls are organic pollutants which have been detected in human milk...

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Inhibition of growth of Anabaena variabilis population by single and mixed steroid hormones

Karolina Czarny, Dominik Szczukocki, Barbara Krawczyk, Sławomira Skrzypek, more

Journal of Applied Phycology > 2019 > 31 > 1 > 389-398

Many contaminants which are toxic and adversely affect living organisms enter surface waters. Among them, there are endocrine compounds such as steroid hormones, which can disrupt the endocrine system causing an adverse effect on the physiology of aquatic organisms. In the literature, there is not enough information about the influence of steroid hormones on phytoplankton growth. Therefore, the aim...

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Cadmium‐induced changes in the production of siderophores by a plant growth promoting strain of Pseudomonas fulva

Dominika Thiem, Michał Złoch, Renata Gadzała‐Kopciuch, Sonia Szymańska, more

Journal of Basic Microbiology > 58 > 7 > 623 - 632

The impact of increasing Cd²⁺ exposure on the quality and quantity of siderophores produced by a plant growth promoting Pseudomonas fulva strain was tested to gain insight into the degree of change. P. fulva was cultured in the increasing concentrations of Cd²⁺ (0, 0.5, 1.0, 2.0 mM). The secreted siderophores were separated by HPLC and characterized by UHPLC‐QTOF/MS. In the presence of 2 mM Cd²⁺...

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The determination of zearalenone and its major metabolites in endometrial cancer tissues

Martyna Pajewska, Mariusz Łojko, Krzysztof Cendrowski, Włodzimierz Sawicki, more

Analytical and Bioanalytical Chemistry > 2018 > 410 > 5 > 1571-1582

Endometrial cancer is one of the most commonly diagnosed cancers in women. The search for factors that contribute to the development of cancer cells in reproductive organs should involve the detection of xenoestrogens, in particular zearalenone (ZEA) and its metabolites. Xenoestrogens are endocrine disruptors–ZEA and its metabolites are structurally similar to estrogens (macrocyclic lactone ring)...

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Separation of aflatoxin B1 from synthetic physiological fluids using talc and diatomite: Kinetic and isotherm aspects

Myroslav Sprynskyy, Iwona Krzemień-Konieczka, Renata Gadzała-Kopciuch, Bogusław Buszewski

Journal of Chromatography B > 2018 > 1072 > C > 1-8

The objective of the study was to examine adsorption of the aflatoxin B1 from synthetic gastric fluid and synthetic intestinal fluid by talc, raw and calcined diatomite. The kinetic and equilibrium adsorption processes were studied in the batch adsorption experiments applying high performance liquid chromatography for the aflatoxin B1 determination. The kinetic study showed a very fast adsorption...

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Development of potential candidate reference materials for drugs in bottom sediment, cod and herring tissues

Irena Baranowska, Bogusław Buszewski, Jacek Namieśnik, Piotr Konieczka, more

Chemosphere > 2017 > 169 > C > 181-187

Regular use of a reference material and participation in a proficiency testing program can improve the reliability of analytical data. This paper presents the preparation of candidate reference materials for the drugs metoprolol, propranolol, carbamazepine, naproxen, and acenocoumarol in freshwater bottom sediment and cod and herring tissues. These reference materials are not available commercially...

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Synthesis of siderophores by plant-associated metallotolerant bacteria under exposure to Cd2+

Michał Złoch, Dominika Thiem, Renata Gadzała-Kopciuch, Katarzyna Hrynkiewicz

Chemosphere > 2016 > 156 > C > 312-325

Rhizosphere and endophytic bacteria are well known producers of siderophores, organic compounds that chelate ferric iron (Fe³⁺), and therefore play an important role in plant growth promotion in metalliferous areas, thereby improving bioremediation processes. However, in addition to their primary function in iron mobilization, siderophores also have the capacity to chelate other heavy metals, such...

article

New sorbent materials for selective extraction of cocaine and benzoylecgonine from human urine samples

Renata Bujak, Renata Gadzała-Kopciuch, Alicja Nowaczyk, Joanna Raczak-Gutknecht, more

Journal of Pharmaceutical and Biomedical Analysis > 2016 > 120 > C > 397-401

An increase in cocaine consumption has been observed in Europe during the last decade. Benzoylecgonine, as a main urinary metabolite of cocaine in human, is so far the most reliable marker of cocaine consumption. Determination of cocaine and its metabolite in complex biological samples as urine or blood, requires efficient and selective sample pretreatment. In this preliminary study, the newly synthesized...

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Selective determination of cocaine and its metabolite benzoylecgonine in environmental samples by newly developed sorbent materials

Renata Bujak, Renata Gadzała-Kopciuch, Alicja Nowaczyk, Joanna Raczak-Gutknecht, more

Talanta > 2016 > 146 > Complete > 401-409

Sewage epidemiology, as compared to crime statistics, health, medical reports or population surveys, is becoming the most objective and realistic approach to estimate drug consumption and trends in local communities. In this study we proposed newly synthesized sorbent materials for selective extraction of cocaine and benzoylecgonine from wastewater samples. The molecular modeling calculations were...

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The chromatographic assay of 4‐hydroxynonenal as a biomarker of diseases by means of MEPS and HPLC technique

Magdalena Ligor, Tomasz Ligor, Renata Gadzała‐Kopciuch, Bogusław Buszewski

Biomedical Chromatography > 29 > 4 > 584 - 589

The aim of this study was to develop and validate a new analytical method for the determination of 4‐hydroxy‐2‐nonenal (4‐HNE) in biological samples while applying microextraction by packed sorbent as a sample preparation method and HPLC with UV–vis detection. Various microextraction by packed sorbent (MEPS) sorbents like C₂, C₈, C₁₈, M1 (80% C₈ and 20% SCX) and silica were used to separate 4‐HNE...

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Magnetic molecular imprinted polymers as a tool for isolation and purification of biological samples

Katarzyna Kwaśniewska, Renata Gadzała-Kopciuch, Bogusław Buszewski

Open Chemistry > 2015 > 13 > 1

Technology of molecularly imprinted polymers (MIP) has become very popular in recent decades. MIPs are primarily used in medical diagnostics, chromatographic separation and solid phase extraction (SPE); also as sensors and catalysts. In recent years there have been reported benefits of combining molecular imprinted polymers with additional features, e.g. magnetic properties, through the build-up of...

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Isolation and determination of estrogens in water samples by solid‐phase extraction using molecularly imprinted polymers and HPLC

Radosław Sadowski, Renata Gadzała‐Kopciuch

Journal of Separation Science > 36 > 14 > 2299 - 2305

Advanced SPE with molecularly imprinted polymers (MIP) was used in this study. A noncovalent imprinting approach was applied to separate 17β‐estradiol, estriol, and estrone from water samples. Polymer material was prepared by bulk polymerization with methacrylic acid as a functional monomer, divinylbenzene and ethyleneglycol dimethacrylate as crosslinkers, and acetonitrile, acetonitrile/toluene (3:1,...

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INFONA - science communication portal

Search results for: Renata Gadzała-Kopciuch

Dzieje Komitetu Chemii Analitycznej w 70-leciu Polskiej Akademii Nauk

Mleko kobiece - nowe rozwiązania analityczne w badaniach nad zanieczyszczeniami oraz substancjami biologicznie aktywnymi

Nowe kierunki badań i wyzwania w analizie leków heparynowych

Propozycje innowacyjnych sorbentów w przygotowaniu próbek biologicznych

Cytokiny - ich właściwości, izolowanie i identyfikacja

Qualitative analysis of enzymatic and chemical depolymerized low molecular weight heparins by UHPLC coupled with electrospray ionization quadrupole time‐of‐flight‐mass spectrometry

Molecularly imprinted polymer film grafted from porous silica for efficient enrichment of steroid hormones in water samples

QuEChERS extraction coupled to GC-MS for a fast determination of polychlorinated biphenyls in breast milk from Polish women

The impact of environmental pollution on the quality of mother's milk

Inhibition of growth of Anabaena variabilis population by single and mixed steroid hormones

Cadmium‐induced changes in the production of siderophores by a plant growth promoting strain of Pseudomonas fulva

The determination of zearalenone and its major metabolites in endometrial cancer tissues

Separation of aflatoxin B1 from synthetic physiological fluids using talc and diatomite: Kinetic and isotherm aspects

Development of potential candidate reference materials for drugs in bottom sediment, cod and herring tissues

Synthesis of siderophores by plant-associated metallotolerant bacteria under exposure to Cd2+

New sorbent materials for selective extraction of cocaine and benzoylecgonine from human urine samples

Selective determination of cocaine and its metabolite benzoylecgonine in environmental samples by newly developed sorbent materials

The chromatographic assay of 4‐hydroxynonenal as a biomarker of diseases by means of MEPS and HPLC technique

Magnetic molecular imprinted polymers as a tool for isolation and purification of biological samples

Isolation and determination of estrogens in water samples by solid‐phase extraction using molecularly imprinted polymers and HPLC

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