通过筛选改进剂,优化各种试验条件,建立了石墨炉原子吸收光谱法直接测定原油及重油样品中As含量的分析方法。方法的检测下限约为5.4ng/g,线性范围为16～3 000ng/g,相对标准偏差小于10%,加标回收率大于90%。该方法的分析速率快、灵敏度高、操作简便,可满足实际分析工作的需要。 By screening improvers and optimizing various test conditions, an analytical method was established for direct determination of As content in crude oil and heavy oil samples by graphite furnace atomic absorption spectrometry. The detection limit of the method was about 5.4 ng / g, the linear range was 16-3 000 ng / g, the relative standard deviation was less than 10%, and the spiked recovery was more than 90%. The method of analysis speed, high sensitivity, easy to operate, to meet the needs of the actual analysis.