Jun 21, 2013 · Determination of adsorbable organic fluorine (AOF) was performed with a modified CIC system for ultra trace fluorine analysis (), consisting of an automated boat controller (ABC-100), an automatic quick furnace (AQF-100) with a water supply unit (WS-100) and a gas absorption unit (GA-100) (all from Mitsubishi Chemical Analytech Co., LTD, Kanagawa, Japan).