US EPA

2176992 

Journal Article 

HPLC method for the determination of synthetic thermal heating fluid (Therminol 55 (TM)) in basic oleochemicals 

Moh, MH; Tang, TS; Tan, GH 

2005 

Yes 

Journal of the American Oil Chemists' Society
ISSN: 0003-021X
EISSN: 1558-9331 

82 

4 

233-236 

English 

10.1007/s11746-005-1060-y 

WOS:000230018900002 

A combination of alumina column chromatography and HPLC procedures was developed for the determination of synthetic hydrocarbon-based thermal heating fluid (trade-marked as Therminol 55 (TM)) in basic oleochemicals. In each run, 3 g of sample solution was loaded onto the alumina (50 g) column and was eluted with 200 mL of hexane. The eluate was then concentrated to 1 mL with the aid of a nitrogen stream prior to HPLC analysis. The HPLC chromatogram of Therminol 55 was characterized by a humped shape that could not be resolved into individual peaks. The lowest limit of quantification obtained from various spiked samples was 30 mu g/g. The recovery results obtained from the method were good, ranging from 70 to 80 %, whereas the overall CV were all below 10 %. The method is simple and thus is ideal for quality assurance purposes. 

basic oleochemicals; HPLC-fluorescence detection; synthetic thermal heating fluid; Therminol 55 (TM)