Determination of Manganese and Iron in Magmatic Rocks After Ultrasonic Leaching by flame AAS

Authors : M. Hikmet ÖZKAN, Mehmet AKÇAY

Pages : 59-76

View : 10 | Download : 6

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :An alternative sample preparation method has been developed for destructive analysis of magmatic rock sample. The method simply included the crushing, HF treatment and 1% HCl leaching steps of the rock samples under ultrasonic effects. There is no need to exhaust all of the sample through the operation. A reproducible and representative, partial recovery of an analyte was expected in a procedural sequences consisting of strictly defined steps. The changes in analyte recoveries were investigated by sample grain size, sample mass, applied ultrasonic power and sonication time. The optimum recovery conditions were examined. In addition, the kinetics of the dissolution under ultrasonic effects were studied. It was observed that the process followed second order kinetics. The accuracy of the ultrasonic leaching method insert ignore into journalissuearticles values(CULM); was tested by application on standard reference material insert ignore into journalissuearticles values(SRM); and a recovery rate was defined as K1= CULM/CSRM. Another recovery rate, K2, was also defined according to the result of the conventional dissolution method insert ignore into journalissuearticles values(CDM);, that is, K2= CULM/CCDM. The accuracy and the precision of the method are comparable with those of the conventional methods; 91.3% < K1, Mn
Keywords : Ultrasonic metal leaching, partial leaching, magmatic rocks, AAS