G. Knezevic et G. Ziegleder, DETERMINATION OF SHORT-CHAIN FATTY-ACIDS IN PAPER AND CARDBOARD WITH HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHY, Das Papier, 50(9), 1996, pp. 491-492
Short chain fatty acids are the main origin of off-odours in unprinted
cardboard. The fatty acids could be extracted from cardboard with eth
yl ether, cleaned and concentrated by use of solid phase extraction, b
efore being analysed by HPLC. Applying the present technique with soli
d phase extraction, precision and accuracy can be compared favourably
with GC-determination.