title: Analysis of cement by atomic absorption spectrophotometry and volumetric method.
abstract: A new method to determine the composition of cement raw mix and cement is devised. The sample was fused with a mixture of sodium carbonate and lithium tetraborate (3:1) at 925 degrees C for 10 min. The fusion cake was dissolved in hydrochloric acid. The concentration of analyte in solution was either determined by atomic absorption spectrophotometry or titrimetry. The proposed method is quick and the analysis for interested oxides (SiO(2), Al(2)O(3), Fe(2)O(3), and CaO) can be completed within 1 hr. The accuracy and precision are comparable to that of X-ray fluorescence spectrometry.
authors.affiliation: Laboratory, China Cement Co. (HK) Ltd., Tap Shek Kok, Tuen Mun, Hong Kong.
authors.forename: K K
authors.initials: KK
authors.lastname: Choi
authors.forename: L
authors.initials: L
authors.lastname: Lam
authors.forename: S F
authors.initials: SF
authors.lastname: Luk