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石墨炉原子吸收法测定环境和生物样品中的砷已有好多文章作过报导,发现干扰比较严重,测定难度较大.近几年来,国内有人用石墨炉原子吸收法直接测定碳钢和生铁中砷.本文试验在各种金属中测定碑的方法,获得满意结果.本方法可直接测定题列材料中砷含量低至0.0001%的样品.一、仪器与试剂日立180-80偏振塞曼原子吸收分光光度计;砷空心阴极灯;日立普通石墨管.砷(Ⅲ)标准储备液(0.1mg/ml):由此溶液配成0.1μg/ml工作溶液;硝酸
Graphite Furnace Atomic Absorption Spectrometry for the Determination of Arsenic in Environmental and Biological Samples There have been many articles reported that it has been found that the interference is rather serious and the determination of arsenic is more difficult.In recent years some people in China have used graphite furnace atomic absorption spectrometry Arsenic.This paper tests the method of determining the monument in a variety of metals to obtain satisfactory results.This method can directly determine the subject matter of arsenic content as low as 0.0001% of the sample.One instrument and reagent Hitachi 180-80 polarized Zeeman atomic absorption Spectrophotometer; arsenic hollow cathode lamp; Hitachi Ordinary graphite tube. Arsenic (Ⅲ) standard stock solution (0.1mg / ml): This solution dubbed 0.1μg / ml working solution; nitric acid