Trace phthalate and adipate esters contaminated in packaged food.
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(R) cartridge. Analysis by the GC-FID system provided limits of detection for DEHA and DEHP at 12 and 25 microg L(- 1) and a linear dynamic range between 25 microg L(- 1) to 60 mg L(- 1) with a coefficient of determination (R(2)) 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 microg 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 microg g(- 1).
Kueseng
Pamornrat
P
Analytical and Environmental Chemistry/Trace Analysis Research Unit, Department of Chemistry, Prince of Songkla University, Hat Yai, Songkhla, Thailand.
Thavarungkul
Panote
P
Kanatharana
Proespichaya
P
D000272:Adipates / Q000032:analysis*; D002849:Chromatography, Gas / Q000379:methods* / Q000592:standards; D004051:Diethylhexyl Phthalate / Q000032:analysis*; D005506:Food Contamination / Q000032:analysis*; D018857:Food Packaging / Q000379:methods; D010968:Plasticizers / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity
D000272:Adipates; D010968:Plasticizers; C013966:dioctyl adipate; D004051:Diethylhexyl Phthalate