2012 ©
Journal Publication
Title of Article Using bio-dispersive solution of chitosan for green dispersive liquid– liquid microextraction of trace amounts of Cu(II) in edible oils prior to analysis by ICP–OES 
Date of Acceptance 11 March 2017 
     Title of Journal Food Chemistry 
     Standard ISI 
     Institute of Journal elsevier 
     ISBN/ISSN 0308-8146 
     Volume 2017 
     Issue 230 
     Year of Publication 2017 
     Page 398-404 
     Abstract A green approach using chitosan solution as a novel bio-dispersive agent for the dispersive liquid–liquid microextraction (DLLME) of trace amounts of Cu(II) in edible oils is presented. An emulsion was formed by mixing the oil sample with 300 mL of 0.25% (w/v) chitosan solution containing 200 mL of 6mol L1 HCl. Deionized water was used to induce emulsion breaking without centrifugation. The centrifuged Cu(II) extract was collected and analyzed using an inductively coupled plasma–optical emission spectrometer. The detection and quantitation limits were 2.1 and 6.8 mg L1, respectively. Trace amounts of Cu(II) in six edible oil samples were tested under optimum conditions for DLLME, with a recovery ranging from 90.3% to 109.3%. Therefore, the new dispersive agent in DLLME offers superior performance owing to the nontoxic nature of the solvent, short extraction time, high sensitivity, and easy operation. 
     Keyword Chitosan, Bio-dispersive agent, Dispersive liquid–liquid microextraction, Copper, Edible oils 
577020056-2 Miss NUNTICHA LIMCHOOWONG [Main Author]
Science Doctoral Degree
Science Doctoral Degree

Reviewing Status มีผู้ประเมินอิสระ 
Status ตีพิมพ์แล้ว 
Level of Publication นานาชาติ 
citation true 
Part of thesis true 
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