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undergraduate thesis
Senzori za određivanje pesticida
2022. urn:nbn:hr:182:611036
Kovačević, Tea
Josip Juraj Strossmayer University of Osijek
Department of Chemistry
Department of Analytical, Organic and Applied Chemistry

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Kovačević, T. (2022). Senzori za određivanje pesticida (Undergraduate thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:182:611036

Kovačević, Tea. "Senzori za određivanje pesticida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:611036

Kovačević, Tea. "Senzori za određivanje pesticida." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, 2022. https://urn.nsk.hr/urn:nbn:hr:182:611036

Kovačević, T. (2022). 'Senzori za određivanje pesticida', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, accessed 15 March 2023, https://urn.nsk.hr/urn:nbn:hr:182:611036

Kovačević T. Senzori za određivanje pesticida [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Department of Chemistry; 2022 [cited 2023 March 15] Available at: https://urn.nsk.hr/urn:nbn:hr:182:611036

T. Kovačević, "Senzori za određivanje pesticida", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Department of Chemistry, Osijek, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:182:611036

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Metadata
TitleSenzori za određivanje pesticida
Title (english)Sensors for pesticides determination
AuthorTea Kovačević
MentorMirela Samardžić (mentor)
GranterJosip Juraj Strossmayer University of Osijek
Department of Chemistry
(Department of Analytical, Organic and Applied Chemistry)
Osijek
Defense date and country2022-09-12, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Chemistry
Analytic Chemistry
Abstract
Pesticidi su tvari čija su glavne uloge sprečavanje bolesti biljaka i uklanjanje neželjenih vrsta u poljoprivredi. U današnje vrijeme postoji mnogo vrsta takvih molekula. Mogu biti sintetizirane kemijskim i prirodnim putem, a na tržištu su puno češći kemijski sintetizirani pesticidi. Pošto se radi o kemijskim spojevima, često pitanje je utjecaj njihovih ostataka na okoliš. Za analizu ostataka pesticida koriste se brojne metode od kojih su najčešće tekućinska kromatografija visoke razlučivosti, masena spektrometrija i plinska kromatografija. U novije vrijeme većina tih metoda zamijenjene su senzorima. Razvijanje senzora može biti složen i skup proces. Senzori se najčešće koriste pri analizi za detekciju organofosfata. Od mnogih vrsta senzora u ovom radu naglasak je stavljen na fluorescentne i kolorimetrijske senzore koji kao signal daju vizualnu promjenu boje. Fluorescentni senzori mogu biti posredovani enzimom ili potpomognuti antitijelom ili „plastičnim antitijelom“ (molekularno utisnuti polimer, eng. molecular imprinted polymer, MIP). Fluorescentni senzori najčešće prate fluorescentni rezonantni prijenos energije (eng. Fluorescence Resonance Energy Transfer, FRET) gdje postoje akceptorska i donorska boja, a prijelaz energije se događa pri pobuđenom stanju s donorske na akceptorsku boju. Kolorimetrijski senzori na bazi zlatnih nanočestica predstavljaju budućnost detekcije pesticida. Mogu se podijeliti na senzore na bazi aptamera, senzore na bazi antitijela i na enzimske senzore. Osim ove dvije već spomenute vrste senzora, razvijaju se i senzori na bazi Ramanovog raspršenja koji djeluju potpomognuti zlatnim ili srebrnim nanočesticama.
Abstract (english)
Pesticides are substances whose main roles are to prevent plant diseases and eliminate unwanted species in agriculture. There are many types of such molecules nowadays. They can be synthesized chemically and naturally. Chemically synthesized pesticides are much more common on the market. Since these are chemical compounds, the impact of their residues on the environment is a question that is commonly asked. Numerous methods are used to analyze pesticide residues, the most common of which are high-performance liquid chromatography, mass spectrometry, and gas chromatography. More recently, most of these methods have been replaced by sensors. Developing sensors can be complex and expensive process. Sensors are most commonly used for organophosphates detection. Out of the many types of sensors, in this paper emphasis is placed on fluorescent and colorimetric sensors that cause a visual change of color as a signal. Fluorescent sensors can be mediated by an enzyme, assisted by an antibody or polymer-assisted (molecular imprinted polymer, MIP). They ususally follow fluorescence resonance energy transfer (FRET) principles where there are acceptor and donor dyes present, and the energy transition occurs in the excited state from the donor to the acceptor dye. Colorimetric sensors based on gold nanoparticles represent the future of pesticides detection. They can be divided into aptamer-based sensors, antibody-based sensors, and enzyme-based sensors. In addition to these two already mentioned types of sensors, Raman-based sensors supported by gold or silver nanoparticles are also in high demand by scientists.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:182:611036
Study programmeTitle: Chemistry
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije (sveučilišni/a prvostupnik/prvostupnica (baccalaureus/baccalaurea) kemije)
Type of resourceText
File originBorn digital
Access conditionsOpen access
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Created on2022-11-02 08:32:11