Ultrazvučna ekstrakcija pesticida iz uzorka čaja

master's thesis

• Title (english): Ultrasonic extraction of pesticides from tea samples
• Author: Iva Šimić
• Mentor: Dragana Mutavdžić Pavlović (mentor)
• Committee member: Dragana Mutavdžić Pavlović (predsjednik povjerenstva)
• Committee member: Tatjana Gazivoda Kraljević (član povjerenstva)
• Committee member: Marija Vuković Domanovac (član povjerenstva)
• Granter: University of Zagreb; Faculty of Chemical Engineering and Technology; Zagreb
• Defense date and country: 2015-09-23, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Chemistry; Analytic Chemistry

Abstract

U ovom diplomskom radu prikazan je postupak optimizacije ultrazvučne ekstrakcije jedanaest pesticida (klorprofam, propizamid, vinklozolin, metolaklor, profenofos, p, p'-DDE, etion, tetradifon, permetrin, δ-lindan te pirimifos etil) međusobno različitih fizikalno–kemijskih svojstava iz čaja pri čemu su dobiveni ekstrakti snimani na plinskom kromatografu vezanom na spektrometar masa. Optimirana metoda je validirana, a dobivene visoke vrijednosti R^2 potvrda su linearnosti ove metode. Za ispitivane pesticide granice detekcije dobivene su u rasponu od 0,125 μg/g do 0,500 μg/g, a granice kvantifikacije između 0,25 μg/g i 1,00 μg/g. Optimirana i validirana metoda se uspješno primijenila na realnim uzorcima što daje naslutiti da je ultrazvučna ekstrakcija prikladna metoda za identifikaciju i kvantifikaciju pesticida iz različitih uzoraka čajeva.

Abstract (english)

This thesis shows the process optimization of ultrasonic extraction eleven pesticides (chlorpropham, propyzamide, vinclozolin, metolachlor, profenofos, p, p'-DDE, ethion, tetradifon, permethrin, δ-lindane and pirimiphos ethyl) mutually different physical and chemical properties of tea whereby the extracts are analyzed on a gas chromatography tandem mass spectrometry. The optimized method has been validated and the obtained high value R^2 are the confirmation of the linearity of this method. For investigated pesticides limit of detection were obtained in the range of 0,125 μg/g to 0,500 μg/g, and the limit of quantification between 0,25 μg/g and 1,00 μg/g. Optimized and validated method was successfully applied to real samples suggesting that the ultrasonic extraction method is suitable for the identification and quantification of pesticides from different tea samples.

• Keywords: ultrazvučna ekstrakcija; pesticidi; čaj; plinska kromatografija vezana sa spektrometrom masa
• Keywords (english): ultrasonic extraction; pesticides; tea; gas chromatography tandem mass spectrometry
• Language: croatian
• URN:NBN: urn:nbn:hr:149:073328
• Study programme: Title: Chemical Engineering - Graduate study; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka kemijskog inženjerstva (magistar/magistra inženjer/inženjerka kemijskog inženjerstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2017-03-13 12:26:10