采用稀硝酸萃取样品中的镉，再用ICP－OES测定萃取液中镉含量。对该方法测定的工作曲线线性范围、检出限、定量限、准确性、台间差、重复性、稳定性等参数进行分析验证。结果表明：酸提取处理ICP －OES测定稻谷中镉元素的方法标准曲线线性相关系数为0．9998，检出限0．00131 mg／L，定量限0．00440 mg／L，准确性、台间差、重复性、稳定性等参数测试结果均符合GB／T 5009．15—2003等标准和规定的要求，完成一个样品的检测时间不超过15 min，此方法可满足稻谷中镉含量快速检测的要求。%The cadmium in sample was extracted with dilute nitric acid and determined by inductively coupled plasma-optical emission spectroscopy (ICP -OES). The parameters obtained from the test, such as curve linear range,detection limit,quantitative detection limit,accuracy,difference between the measurement station,reproducibility and stability,were validated. The result showed that the linear cor-relation coefficient of the standard curve was 0. 999 8,detection limit 0. 001 31 mg/L,quantitative de-tection limit 0. 004 40 mg/L,accuracy,difference between the measurement station,reproducibility and stability accorded with GB/T 5009. 15-2003 and other standards and requirements. The detection for a sample need less than 15 min,can meet the needs of rapid detection cadmium content in paddy.
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