乙酸丁酯萃取火焰原子吸收法测定铝酸钠溶液中的镓

Determination of Ga in sodium aluminate solution by flame atomic absorption spectrometry with butyl acetate extraction

在6．0mol／LHCI介质中，用乙酸丁酯苹取镓，水反革取后，用火焰原子吸收测定镓。方法线性范围为0～100μg／mL，检出限为0．028μg／mL，样品加标回收率为97．9％～101．8％，RSD在2．83％～3．96％之间。方法应用于拜尔溶液中镓的测定，结果满意。

Using butyl acetate to extract Ga in 6.0mol/L HCI medium, Ga will be determinated by using flame atomic absorption after water reextracting. The method has a linear range for Ga as 0～100μg/mL with the detection limit being 0. 028μg/mL. The recoveries of standard addition are in the range of 97. 9～101.8% with RSDs between 2.83% and 3. 96%. Satisfactory results have been achieved by applying this method to determinating Ga in Bayer solution.