직독식 방출분광기를 이용한 지르콘사 중의 $SiO_2$와 $ZrO_2$의 분석

• 김영만 (한국과학기술연구원 특성분석센터) ;
• 정찬이 (한국과학기술연구원 특성분석센터) ;
• 한봉한 (한국과학기술연구원 특성분석센터) ;
• 최범석 (경희대학교 자연과학대학 화학부)
A direct and simultaneous method to determine the $SiO_2$ and $ZrO_2$ in zircon sand of raw mineral and its treated one were studied by optical emission spectrometer using DC arc source. The synthetic standard was prepared by mixing with pure metal oxide, and it was diluted with buffer(graphite) and flux($Li_2B_4O_7$). The mixing ratio of buffer and flux and its dilution ratio to sample was investigated in order to choose the best excitation conditions. The optimum mixing and dilution ratios were 0.22:1 and 40, and the standard deviations of analytical results were 1.9% for $SiO_2$ and 4.7% for $ZrO_2$.