Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Simultaneous Determination Of Potassium, Sodium, Calcium, And Magnesium In Virgin Olive Oils By Capillary Electrophoresis With Capacitively Coupled Contactless Conductivity Detection|
|Abstract:||Analysis of trace elements in virgin olive oil (VOO) is important for nutritional information, geographical characterization, and adulteration detection. In this study, Na+, K+, Ca2+, and Mg2+ in VOO were extracted to an aqueous solution with the aid of ultrasound energy, which was analyzed by capillary electrophoresis with capacitively coupled contactless conductivity detection (CE-C4D). The metal ions were separated in less than 3 min with good peak resolutions. The CE-C4D method exhibited good linearity, with coefficients of determination (R2) ranging from 0.9978 to 0.9995. The limits of quantification for Na+, K+, Ca2+, and Mg 2+ were 0.029, 0.029, 0.033, and 0.044 mg kg-1, respectively. The results of the recovery tests at three concentration levels ranged from 80.5% to 119.6% with a relative standard deviation of 0.6 to 18.1%. The proposed CE-C4D method was successfully applied for determination of the target analytes in five commercial samples of VOO. © the Partner Organisations 2014.|
|Editor:||Royal Society of Chemistry|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.