原子吸收分光光度法测定锑原料中镉的含量

建立了对锑原料及精锑中镉含量的测定方法。试样采用王水溶解，用盐酸一氢溴酸赶锑，盐酸溶解残渣，在盐酸介质中采用原子吸收分光光度法于波长228．8nm处测定镉的吸光度。试验结果表明：该方法准确、可靠、简便、适用。方法的检出限0．0082μg/mL，相对标准偏差小于6％，回收率为93．0％～110．0％。

Determination of Cadmium Content in Antimony Raw Materials by Atomic Absorption Spectrophotometry

This paper established a method for the determination of cadmium content in antimony and antimony con- centrate raw materials. The sample was dissolved in aqua regia, using hydrochloric acid hydrobromic acid catch Sb, dissolved in hydrochloric acid residue, the absorbance was determined by atomic absorption spectrophotometry in wavelength determination of cadmium in hydrochloric acid medium. The test results show that：the method is accu- rate, reliable, simple, applicable. The detection limits of the method 0. 008 2 μg/mL, the relative standard deviation is less than 6% ,and the recovery rate is 93.0% - 110%.