After ultrasonic extraction and centrifuge separation and precipitation, iron ore samples were filtered by IC-RP column, IC-Na column and 0.22 um microporous filtration membrane respectively. Using CIC-D120 ion chromatograph, SH-AC-3 anion column, 3.6 mM Na2CO3+4.5 mM NaHCO3 eluent and bipolar pulse conductance method,under the recommended chromatographic conditions,the chromatogram is as follows.
The detection limits of F- and Cl- are 2.1 ug/g and 3.5 ug/g. The recoveries of F- and Cl- are 96%-104%. It can be used for the analysis of natural iron ore, iron ore concentrate and other samples.
Post time: Apr-18-2023