Trace phthalate and adipate esters contaminated in packaged food |
| |
| Authors: | Pamornrat Kueseng Panote Thavarungkul Proespichaya Kanatharana |
| |
| Institution: | 1. Analytical and Environmental Chemistry/Trace Analysis Research Unit, Department of Chemistry, Faculty of Science , Prince of Songkla University , Hat Yai , Songkhla , 90112 , Thailand;2. Biophysics Research Unit: Biosensors and Biocurrents, Department of Physics, Faculty of Science , Prince of Songkla University , Hat Yai , Songkhla , 90112 , Thailand |
| |
| Abstract: | A method for trace analysis of two plasticizers, di-2-ethylhexyl phthalate (DEHP) and di-2-ethylhexyl adipate (DEHA), contaminated in packaged curry paste were investigated by gas chromatography with flame ionization detector (GC-FID). Curry paste samples were extracted by ultrasonic and solid phase extraction using Florisil® cartridge. Analysis by the GC-FID system provided limits of detection for DEHA and DEHP at 12 and 25 μ g L? 1 and a linear dynamic range between 25 μ g L? 1 to 60 mg L? 1 with a coefficient of determination (R2) greater than 0.99. High recoveries were obtained, ranged from 91 to 99% and 88 to 98% for DEHP and DEHA with RSD lower than 7 and 10% respectively. The method detection limit and limits of quantitation were ranged from 27 to 30 and 90 to 100 μ g L? 1. The analysis of curry paste samples showed concentrations of DEHP and DEHA in the range of 4.0 ng g? 1 to 0.61 μg g? 1. |
| |
| Keywords: | Plasticizers phthalate adipate packaged food sample preparation GC-FID |
|
|
