About: Determination of Fluoride in Plant Material using Microwave Induced Oxygen Combustion

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Fluorine is essential in human and/or animal nutrition, thus it is important to know its concentration in a diet. One of the important sources of fluorine for humans is tea, containing relatively high amounts of this trace element. A method for fluoride determination in various kinds of tea using microwave supported sample preparation in a high pressure oxygen atmosphere followed by potentiometry with a fluoride ion-selective electrode were described. The parameters of the microwave device for such combustion procedure were checked and optimised in order to find settings ensuring complete sample combustion and/or absorption of the analyte in the absorption solution. For the ion-selective electrode measurement, the technique of standard addition was chosen. The Nernstian slope of the fluoride ion-selective electrode was measured and calculated in the concentration range in which the potential of samples occurred. Concentrations of fluorides in tea in the range from 24.5 mg/kg to 254.5 mg/kg were found. In order to check the accuracy of the method certified reference materials were used. The precision expressed as the relative standard deviation ranged from 3.7% to 15.9%. The method is fast, accurate and reliable for this kind of analysis Fluorine is essential in human and/or animal nutrition, thus it is important to know its concentration in a diet. One of the important sources of fluorine for humans is tea, containing relatively high amounts of this trace element. A method for fluoride determination in various kinds of tea using microwave supported sample preparation in a high pressure oxygen atmosphere followed by potentiometry with a fluoride ion-selective electrode were described. The parameters of the microwave device for such combustion procedure were checked and optimised in order to find settings ensuring complete sample combustion and/or absorption of the analyte in the absorption solution. For the ion-selective electrode measurement, the technique of standard addition was chosen. The Nernstian slope of the fluoride ion-selective electrode was measured and calculated in the concentration range in which the potential of samples occurred. Concentrations of fluorides in tea in the range from 24.5 mg/kg to 254.5 mg/kg were found. In order to check the accuracy of the method certified reference materials were used. The precision expressed as the relative standard deviation ranged from 3.7% to 15.9%. The method is fast, accurate and reliable for this kind of analysis (en)
Title	Determination of Fluoride in Plant Material using Microwave Induced Oxygen Combustion Determination of Fluoride in Plant Material using Microwave Induced Oxygen Combustion (en)
skos:prefLabel	Determination of Fluoride in Plant Material using Microwave Induced Oxygen Combustion Determination of Fluoride in Plant Material using Microwave Induced Oxygen Combustion (en)
skos:notation	RIV/62157124:16270/12:43871184!RIV13-MSM-16270___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6215712402)
http://linked.open...iv/cisloPeriodika	5
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Bednář, Jiří Šucman, Emanuel
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Veterinární a farmaceutická univerzita Brno / Fakulta veterinární hygieny a ekologie
http://linked.open...dnocenehoVysledku	130582
http://linked.open...ai/riv/idVysledku	RIV/62157124:16270/12:43871184
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	tea; sample preparation; ion-selective electode (en)
http://linked.open.../riv/klicoveSlovo	ion-selective electode tea sample preparation
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[207643EF51FC]
http://linked.open...i/riv/nazevZdroje	Czech Journal of Food Sciences
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	30
http://linked.open...iv/tvurceVysledku	Bednář, Jiří Šucman, Emanuel
http://linked.open...ain/vavai/riv/wos	000307490900006
http://linked.open...n/vavai/riv/zamer	Veterinary aspects of food safety and quality
issn	1212-1800
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	16270

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