| Title |
A novel SPME fibre for fatty acid determination / |
| Translation of Title |
Naujas kietafazės mikroekstrakcijos strypelis riebalų rūgštims nustatyti. |
| Authors |
Panavaitė, Dalia ; Adomavičiūtė, Edita ; Vičkačkaitė, Vida |
| Full Text |
|
| Is Part of |
Chemija. 2006, T. 17, Nr. 4, p. 61-66.. ISSN 0235-7216 |
| Keywords [eng] |
Solid phase microextraction ; Sorbent coating ; Gas chromatography ; Fatty acids |
| Abstract [eng] |
A novel solid phase microextraction fibre consisting of a sorbent Xiks-1 fixed on a stainless steel support is presented for the extraction of fatty acid derivatives. The sorbent is incorporated into a slot. The sorbent particles do not contact with the outer needle and thus the mechanical damage of the coating is avoided. Fatty acids were derivatized using ethyl chloroformate. The effects of extraction and desorption parameters including the extraction and desorption time, desorption temperature and ionic strength on the extraction/desorption efficiency have been studied. The calibration graphs were linear in the concentration range up to 5´10–4 mol L–1 (R2 > 0.996). The detection limits were 1.1´10–7 mol L–1 for palmitic acid, 1´10–7 mol L–1 for stearic acid and 1´10–6 mol L–1 for azelaic acid. Repeatabilities of the results were up to 15%. A possibility to apply the proposed method for the identification of oil binders was demonstrated. |
| Type |
Journal article |
| Language |
English |
| Publication date |
2006 |
