论文部分内容阅读
硅酸盐中微量钛的测定常用的是分光光度法。国外有报道用一氧化二氮-乙炔焰原子吸收测定钛,由于此法的精密度灵敏度及一些技术问题,在国内未被广泛应用,又由于钛本身的特性,使得空气-乙炔焰直接原子吸收测定成为不可能。本法利用元素钛对铁的线性增感效应,用空气-乙炔焰间接原子吸收测定了元素钛,同时借助离子交换进行干扰分离,并将此法应用到了硅酸盐中钦的测定。此法灵敏、简便、准确。该方法TiO_2标准曲线的线性范围为0.02—0.18μg/ml,特征浓度为0.0005μg/ml/1％A,相对标准偏差为2.8％。
Determination of trace titanium in silicate commonly used spectrophotometry. Abroad has been reported with nitrous oxide - acetylene flame atomic absorption measurement of titanium, due to the precision of this method sensitivity and some technical problems, not widely used in the country, but also because of its own characteristics of titanium, making the air - acetylene flame direct atomic absorption Measurement becomes impossible. In this method, the elemental titanium is used for the linear sensitizing effect on iron. The elemental titanium is determined by the indirect atomic absorption of air-acetylene flame. At the same time, the elemental titanium is separated by means of ion exchange. The method is applied to the determination of silicate. This method is sensitive, simple and accurate. The linear range of this method is 0.02-0.18μg / ml, the characteristic concentration is 0.0005μg / ml / 1% A, and the relative standard deviation is 2.8%.