压力消解—火焰原子吸收光谱法测定米粉中铜

Dissolves stress-flame atomic absorption spectrographic methods determination rice copper

耳的探讨米粉中铜的压力消解一火焰原子吸收光谱测定方法。方法压力消解，氘灯扣背景火焰原子吸收光谱法测定。结果检出限0．05mg／L，标准曲线相关系数0．9999，相对标准偏差2．7％，平均加标回收率为95．8％0～103．0％，有证标准物质的测定值在其给定范围内。结论该法准确度，精密度好，灵敏度高，是高效、快速、实用的测定米粉中铜的方法。

Objective Discuss in the rice the copper dissolves stress-the flame atomic absorption spectrometer methods determinaton method. Methods Dissolve stress, the deuterium lamp cut out of background, he flame atomic absorption spectrometer methods determinaton method. Results The limt of detection was 0.05mg/L, the linear correlation coeffcient was 0.9999, the relative standard devation was2.7% and the average recovery rate was in the range of 95.8%-103.0%. Determine certified reference material winth the limits ofreferencen. Conclusion This method with good accuracy and high sensitivity, which is highly effective, fast and practical in the determination of rice.