正交试验法优选石墨炉测定大米中镉的实验条件

Application of Orthogonal Experimental Design in Optimization of Determination Conditions of Cadmium in Rice by GFAAS

中文关键词:  正交试验设计  石墨炉原子吸收光谱法  大米  镉

英文关键词:orthogonal experiment  graphite furnace atomic absorption spectrometry  rice  cadmium

中文摘要:

      利用L₁₆(4⁵)正交试验设计，考察了石墨炉原子吸收法测定大米中镉的灰化温度、灰化时间、原子化温度、原子化时间.确定了最佳灰化温度为450 ℃、灰化时间为15 s、原子化温度为1 750 ℃、原子化时间为4s等仪器的最佳参数.

英文摘要:

      Using the L₁₆(4⁵) orthogonal experimental design, factors including ashing temperature , ashing time ,atomization temperature, atomization time were studied in the determination of cadmium in rice by graphite furnace atomic absorption spectrometry. The instrument parameters were determined : the optimized ashing temperature, ashing time, atomization temperature, and atomization time were 450 ℃, 15 s, 1 750 ℃ and 4 s, respectively.