干法灰化石墨炉原子吸收光谱法测定桄榔粉中痕量镉

Determination of Cadmium in Arenga pinnata(Wurmb) Merr flour by Graphite furnace atom absorption spectometry

研究建立干法灰化消化样品，石墨炉原子吸收光谱法检测桄榔粉中痕量镉的方法；并对石墨炉原子吸收光谱法的测定条件进行优化。研究表明，镉的检出限为0．66ug/L，线性范围为0．0-8．0ug／L；样品测定回收率在97．3％～103．2％之间，相对标准偏差为1．6％。方法准确灵敏、操作简单，用于实际样品中镉含量检测，结果满意。

A method has been studied for the determination of cadmium in arenga pinnata （Wurmb） Merr flour by dry ashing-graphite furnace atomic absorption spectrometry（GFAAS） method, and the optimum condition of determination by GFAAS was studied. The detection limit was 0.66ug/L, the linear arrange was 0-8.0ug/L, the rate of recovery was 97.3%-103.2%, RSD was 1.6%. This method features high sensitivity, accuracy, low detection limit as well as speediness and exactness, and was applied to the determination of Cd in samples with satisfactory results.