Lim, Ying Chin and Sanagi, Mohd. Marsin (2008) Analisis toluena residu dalam pembungkus makanan dengan kaedah pengekstrakan ruang kepala kromatografi gas. The Malaysian Journal of Analytical Sciences, 12 (1). 10 - 15. ISSN 1394-2506
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Polymeric materials are used in many food contact applications as packaging material. The presence of residual toluene in this food packaging material can migrate into food and thus affect the quality of food. In this study, a manual headspace analysis was successfully designed and developed. The determination of residual toluene was carried out with standard addition method and multiple headspace extraction ,MHE) method using gas chromatography-flame ionization detector ,GC-FID). Identification of toluene was performed by comparison of its retention time with standard toluene and GC-MS. It was found that the suitable heating temperature was 180 oC with an optimum heating time of 10 minutes. The study also found that the concentration of residual toluene in multicolored sample was higher compared to monocolored sample whereas residual toluene in sample analyzed using standard addition method was higher compared to MHE method. However, comparison with the results obtained from De'Paris laboratory, France found that MHE method gave higher accuracy for sample with low analyte concentration. On the other hand, lower accuracy was obtained for sample with high concentration of residual toluene due to systematic errors. Comparison between determination methods showed that MHE method is more precise compared to standard addition method.
|Uncontrolled Keywords:||Headspace extraction, Food packaging material, Gas chromatography|
|Subjects:||Q Science > QD Chemistry|
|Deposited By:||Kamariah Mohamed Jong|
|Deposited On:||19 Nov 2012 06:33|
|Last Modified:||19 Nov 2012 06:34|
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