摘要
本文采用氢氧化钠熔矿、水提取、控制被测液pH值为5.5—6.0,用离子选择电极直接电位法,在同一份试液中先测氯,再测氟。该方法既解决了岩石中微量氯的测定之难题,同时还提高了方法的灵敏度、其检测下限可达3×10-6M。值得在岩矿分析工作中加以推广。
Samples are melted with NaOH and extracted with water. pH value of solution is adjusted to 5.5-6.0. A direct potential method of ion selective electrode analysis is used. After chlorine, fluorine is measured from the same aliquot. By this approach we solved the problem of trace chlorine measurement with sufficient precision and accuracy. The detective limit for both Cl and F is 3×10^(-6) M.
出处
《矿物岩石》
CAS
CSCD
1989年第2期117-121,共5页
Mineralogy and Petrology
