期刊
CHROMATOGRAPHIA
卷 81, 期 7, 页码 1097-1102出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10337-018-3539-8
关键词
High-temperature liquid chromatography; Fast liquid chromatography; Biogenic amine; Food contaminant analysis; Temperature selectivity
资金
- National Key Research and Development Program of China [2016YFD0400301]
Nowadays, there is a demand for fast liquid chromatography (LC) of biogenic amines in food with the equipment available in the average laboratory. To this end, high-temperature liquid chromatography (HTLC) is presented in this study as a viable option, working on a conventional LC platform at moderately high temperatures up to 80 A degrees C. The LC platform was adapted by including an appropriate length of stainless-steel microbore tubing as a preheater. Biogenic amines as benzoyl derivatives showed good thermostability on a thermally rugged column (150 x 4.6 mm, 5 A mu m). As a model application the HTLC conditions were developed for wine separation. The separation selectivity changed considerably with temperature in the range 36-84 A degrees C, and baseline resolution was obtained only at temperatures well above ambient. At 73 A degrees C oven temperature, the system allowed a flow rate as high as 3 mL min(-1) with the backpressure not exceeding 195 bar (2800 psi). The separation took less than 5 min, comparably fast to documented fast LC separations, and typically at least three to five times faster than a conventional separation.
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