Now showing items 1-6 of 6
Towards tributyltin quantification in natural water at the Environmental Quality Standard level required by the Water Framework Directive
The European Union (EU) has included tributyltin (TBT) and its compounds in the list of priority water pollutants. Quality standards demanded by the EU Water Framework Directive (WFD) require determination of TBT at so low ...
Validation of a GC-IDMS method for the metrologically traceable quantification of selected FAMEs in biodiesel
Current methods for the analysis of fatty acid methyl esters (FAMEs) in rapeseed oil-based biodiesel refer to operationally defined measurands, which is a practical solution for routine analysis. In this paper, a new method ...
Polyphenol contents and antioxidant activity of lyophilized aqueous extract of propolis from Erzurum, Turkey
Propolis, an extremely complex resinous material, exhibits valuable pharmacological and biological properties attributed to the presence of polyphenols. In this study, we determined the antioxidant properties of lyophilized ...
HPLC and LC-MS/MS methods for determination of sodium benzoate and potassium sorbate in food and beverages: Performances of local accredited laboratories via proficiency tests in Turkey
High Performance Liquid Chromatography LC-UV and LC-MS/MS methods were developed and validated for quantitative analyses of sodium benzoate and potassium sorbate in foods and beverages. HPLC-UV and LC-MS/MS methods were ...
Potential reference measurement procedures for PBDE in surface water at levels required by the EU Water Frame Directive
Polybrominated diphenylethers (PBDE), used as flame retardants, are named as priority substances in the Directive 2000/60/EC of the European parliament and of the council establishing a framework for Community action in ...
C-13/C-12 pattern of honey from Turkey and determination of adulteration in commercially available honey samples using EA-IRMS
Honey adulteration particularly by adding cheap sugars such as High Fructose Corn Syrup (HFCS) and cane sugar syrup into natural honey is widespread. This study reports (C-13/C-12,parts per thousand) patterns of 31 authentic ...